HomeMy WebLinkAboutSCW Contracting Corp; 2004-07-08; PWS04-20ENG Part 3 of 3SECTION 15092
MISCELLANEOUS COUPLINGS, PIPE AND APPURTENANCES '
i PART 1 GENERAL
1 .l
1.2
I
1.3
1.4
I DESCRIPTION
All valves, couplings, and appurtenances shall conform to requirements dr the standard dimensions and pressure classification of the immediately adjacent pipe, valve or
appurtenance as specified.
RELATED WORK DESCRIBED ELSEWHERE
The Contractor shall refer to the following Specification section(s) for additional requirements:
A. Painting and Coating: 09900 6. Petrolatum Wax Tape Coating: 09902
SUBMITTALS
Contractor shall furnish submittals in accordance with the requirements of Section $4.3, Shop Drawing Submittals. The following submittals are required:
A. Submit Shop Drawings for all miscellaneous couplings, pipe and appurtenances. Shop Drawings shall include listing of materials of construction, with ASTM reference and grade, including lining and paint coating intended for use, with lining and coating manufacturers' and paint numbers listed.
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PAYMENT
Payment for the Work in this section shall be included as part of the lum$sum or unit- price bid amount for which such Work is appurtenant thereto.
PART 2 - MATERIALS
2.1 GASKETS, NUTS, AND BOLTS
Gaskets for flanged joints shall be fullface, asbestos composition sheet packing, graphited on both sides, "drop-in" type, boltholes prepunched, conforming to the requirements of ANSI 816.21 and shall be as manufactured by Crane Co., Garlock or
approved equal.
Bolts and studs for aboveground installations shall be cadmium plated and shall conform to ASTM A307, Grade B, "Steel Machine Bolts and Nuts and Tap Holes," when a ring gasket is used and shall conform to either ASTM A261, "Heat-Treated Carbon Steel Bolting Material" or ASTM AI 93, "Alloy-Steel Bolting Material for High Temperature Service," when a full-face gasket is used. Bolts and nuts shall be heavy hexagon series. Nuts shall conform to ASTM A194, "Carbon and Alloy Steel Nuts for Bolts for High Pressure and High Temperature Service" either in Grade 1, 2 or 2H. The fit shall be ANSI B1.1, "Unified Screw Threads," Class 2, except that Class 3 fit shall be used in holes tapped for studs. Threads may be made by either cutting or cold forming. Between 1/4-inch and 3/8-inch shall project through the nut when drawn tight. Washers shall be provided for each nut and shall be the same material as each nut. All buried
flanges, including bolts, nuts and washers, shall be encased in wax tape per Section 09902.
January 2004 Miscellaneous Couplings, Pipe and Appurtenances
Twin D Pump Station (860-3-TD) Contract 38891 15092-1
All bolt threads shall be lubricated with non-oxide grease. Flanged faces shall be wire
brushed and cleaned prior to joining each flange.
2.2 POLYETHYLENE ENCASEMENT
Unless otherwise specified on the Plans, all couplings and appurtenances for
underground installation shall be encased in wax tape per Section 09902.
2.3 PAINTING AND COATING
All miscellaneous couplings, pipe and appurtenances referenced in this section shall be
painted and coated, interior and exterior, in accordance with Section 09900, Painting
and Coating.
2.4 FLEXIBLE COUPLINGS
Joints for which flexible couplings are required, shall be made with Baker, Smith-Blair, or
approved equal. Gaskets shall be plain rubber gaskets. Threads on bolts of compression
collars shall be lubricated with non-oxide grease before assembling the coupling.
For cast-iron, ductile-iron or asbestos cement pipe sizes 2-inches through 16-inches, ,
use Baker Series 228, Smith-Blair Series 41 3, or approved equal.
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Transition couplings shall be Baker Series 21 2, Smith-Blair Series 41 3, or approved
equal.
Flanged coupling adapters for cast iron or ductile iron pipe sizes 4-inches through
12-inches shall be Baker Series 601, Smith-Blair Series 912, or approved equal.
Flanged coupling adaptors for cast or ductile iron pipe greater than 12-inches shall be
Baker Series 602 or Smith-Blair Series 91 3.
2.5 PIPE UNIONS
Screw unions may be employed on pipelines 2-112-inches in diameter and smaller.
Pipes and fittings made of non-ferrous metals shall be isolated from ferrous metals by
nylon insulating pipe bushings, unions or couplings manufactured by Smith-Blair, Pipe
Seal and Insulator Co. or approved equal.
PART 3 - EXECUTION (Not Applicable)
END OF SECTION
January 2004 Miscellaneous Couplings, Pipe and Appurtenances
Twin D Pump Station (860-3-TD) Contract 38891 15092-2
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0 SECTION 15099
PROCESS VALVES, REGULATORS AND MISCELLANEOUS VALVES
PART 1 GENERAL
1.1 DESCRIPTION
This section includes materials, testing and installation of manually operated process
valves such as check valves, pressure control valves, pressure reducing valves and ball
valves.
1.2 REFERENCE STANDARDS
The publications listed below form part of this specification to the extent referenced and
are referred to in the text by the basic designation only. Reference shall be made to the
latest edition of said standards unless otherwise called for.
American Water Works Association
AWWA C508 Standards for Swing Check Valve
ASTM 862 Standards for Ball Vales
i
1.3 RELATED WORK SPECIFIED ELSEWHERE
CMWD Standard Drawings
CMWD Specification Sections 09910, 15000, 15041 , 15044, 15057, 15074, 151 08,
15112 and 15152
1.4 SERVICE APPLICATIONS
Check valves, pressure control valves, pressure reducing valves, bronze gate valves
and ball valves are primarily used in the installation of potable and recycled water main
appurtenances and where called for on the Approved Plans and indicated on the
Standard Drawings.
1.5 SUBMITTALS
The following items shall be submitted to the District for review and approval prior to
ordering or delivery of valves per Section 2-5.3 Submittals.
A. The valve manufacturers catalog data showing the size to be used, valve
dimensions, pressure rating and materials of construction.
6. Manufacturers catalog data and proof of NSF certification on the lining materials
to be used.
C. Installation procedures including field adjustments as required.
January 2004 Process Valves, Regulators and Miscellaneous Valves
Twin D Pump Station (860-3-TD) Contract 38891 15099-1
1.6
I .7
, 1.8
1.9
1.10
SIZING OF VALVES
Valves shall be the same size as the appurtenance in which they are to be instplled with
unless otherwise called for on the Approved Plans or indicated on the Standard
Drawings.
VALVE ENDS
Valve ends shall be compatible with the piping system or appurtenance in which they are
to be installed or as called for on the Approved Plans or indicated on the Standard
Drawings.
DELIVERY, STORAGE AND HANDLING
Valves shall be delivered and stored in accordance with the manufacturer's
recommendations. Valves shall remain in factory packaging until ready for installation.
Valves shall not be stored in contact with bare ground.
! POLYETHYLENE WRAP
Polyethylene wrap shall be used for the buried installation of valves in accordan& with Section 15000. 'I
GATE WELLS AND EXTENSION STEMS
Valve boxes and extension stems shall be installed in accordance with Section 15000
and the Standard Drawings.
PART 2 MATERIALS
2.1 RUBBER-FLAPPER SWING CHECK VALVE
A. Swing check valves and appurtenant components shall be in accordance with
AWWA C508 and selected from the Approved Materials List. A submittal will be
required as described in this Section.
B. Rubber-flapper swing check valves shall have a heavily constructed ductile-iron
body and cover. The body shall be long pattern design (not wafer), with integrally
cast-on end flanges. The flapper shall be Buna-N having an "0" ring seating
edge and be internally reinforced with steel.
C. Flapper shall be captured between the body and the body cover in a manner to
permit the flapper to flex from closed to full open position during flow through the
valve. Flapper shall be easily removed without need to remove valve from line.
Check valves shall have full pipe size flow area. Seating surface shall be on a
45O angle requiring the flapper to travel only 35' from closed to full open position,
for minimum head loss and non-slam closure.
January 2004 Process Valves, Regulators and Miscellaneous Valves
Twin D Pump Station (860-3-TD) Contract 38891 15099-2
D. Buna-N flapper shall be high-strength coated fabric, coated both sides with
70 DURO, which creates an elastic spring effect, molded internally, to assist the flapper to close against a slight head to prevent slamming. When essential to create backflow through the check valve, as directed by the District Engineer, an external backflow device shall be furnished.
Valve ends shall be flanged ductile-iron in accordance with Section 15056 unless otherwise called for on the Approved Plans or directed by the Distri 1 Engineer.
Check valves shall be tested by the manufacturer and the test results shall be approved by the District Engineer prior to shipment to the project. Check valves
must unseat at a head no greater than 600mm (24").
E.
F.
' 2.2 SMALL DIAMETER ISOLATING VALVES
Provide all small diameter valves and cocks for shut-off process connections, instrumentation and other miscellaneous uses in accordance with the Approved Plans.
These valves shall be of the same material and pressure rating as the adjacent process piping. Shutoff valves shall be compatible with instrumentation and other equipment in accordance with the manufacturer's recommendations. !
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2.3 CORPORATION STOPS
Corporation stops shall be in the ball type with a bronze body and T-Head operator. Valve ends shall be compatible with the piping system in which they are being installed
or as called for on the Approved Plans or indicated on the Standard Drawings. Corporation stops shall be rated for a minimum pressure of 1,379 KPa (200 psi). Corporation stops shall be selected from the Approved Materials List.
2.4 ANGLE METER STOPS -6
Angle meter stops shall be the ball type with a bronze body and 90' lockswing. Valve ends shall be flare style inlet and swivel meter nut for 25mm (1") and meter flange for
50mm (2") outlets. Angle meter stops shall be rated for a minimum pressure of 1,379 KPa (200 psi). Angle meter stops shall be selected from the Approved Materials List.
2.5 CUSTOMER METER SHUT-OFF VALVE
Customer meter shut-off valves shall be the ball type with a bronze body and lever handle operator. Valve ends shall be swivel meter nut for 25mm (1") inlets and meter flange for 50mm (2") inlets. Customer meter shut-off valves shall be rated for a minimum pressure of 1,379 KPa (200 psi). The District Engineer may require the use of
a customer meter shut-off valve equipped with a 90' lock wing.
2.6 BALL VALVES
Ball valves 50mm (2") and smaller shall be of bronze construction conforming to ASTM 862 and equipped with a T-Head or lever handle operator as required. Valve ends shall
be compatible with the piping system in which they are being installed or as indicated on the Approved Plans or Standard Drawings. Ball valves shall be rated for a minimum pressure of 1,379 KPa (200 psi). Ball valves shall be selected from the Approved
Materials List.
January 2004 Process Valves, Regulators and Miscellaneous Valves
Twin D Pump Station (860-3-TD) Contract 38891 15099-3
2.7
2.0
2.9
BACKFLOW PREVENTERS
Backflow preventers shall be in accordance with Section 15112 and selected from the
Approved Materials List.
POLYTHYLENE WRAP
Polyethylene wrap shall be in accordance with Section 15000 and selected from the
Approved Materials List.
GATE WELLS AND EXTENSION STEMS
Gate wells and extension stems for buried valves shall be in accordance wit Section
15000 and selected from the Approved Materials List.
PART 3 EXECUTION
3.1
3.2
3.3
'I INSTALLATION
A. Valves shall be set in true alignment straddling the centerline of pipe with the
valve operator in the vertical position unless otherwise noted on the Approved
Plans or shown on the Standard Drawings.
B. Valves shall be installed in accordance with the manufacturer's recommendations
and the applicable section of these specifications for the piping material and joint
type being used,
C. Aboveground valves shall be rigidly held in place using supports and hangers in
accordance with the Approved Plans and Standard Drawings. The stem
orientation of valves in elevated piping shall be as approved by the District
Engineer for accessibility, except that no valves shall be installed with stems
aligned below horizontal. Saddle type valve supports shall be provided. Supports
shall be of rugged construction providing at least one hundred twenty degrees
(120O) under support for the valve body. Valve supports shall be constructed of
steel, and shall be anchored to the foundations using stainless steel anchor bolts. ,
POLYETHYLENE WRAP
Installation of polyethylene wrap for buried valves shall be in accordance with Section
15000.
GATE WELLS AND EXTENSION STEMS
Gate wells and extension stems for buried valves shall be in accordance with Section
15000 and the Standard Drawings.
January 2004 Process Valves, Regulators and Miscellaneous Valves
Twin D Pump Station (860-3-TD) Contract 38891 15099-4
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3.4 DISINFECTION OF THE VALVES
Disinfection and flushing shall be in accordance with Section 15041, as part of the
progress of disinfecting the main pipeline. The valves shall be operated during the
disinfection period to completely disinfect all internal parts.
3.5 HYDROSTATIC TESTING
Valves shall be hydrostatically tested in conjunction with the pipelines in which they are
installed in accordance with Section 15044.
END OF SECTION
January 2004
Twin D Pump Station (860-3-TD)
Process Valves, Regulators and Miscellaneous Valves Contract 38891 15099-5
SECTION 151 00
RESILIENT WEDGE GATE VALVES (RWGVs)
i
PART 1 GENERAL
1.1 DESCRIPTION I
This section includes materials, testing , and installation of manually operated resilient
wedge gate valves (RWGVs).
1.2 REFERENCE STANDARDS
I
The publications listed below form part of this specification to the extent referenced and
are referred to in the text by the basic designation only. Reference shall be made to the
latest edition of said standards unless otherwise called for.
1.3 RELATED WORK SPECIFIED ELSEWHERE
CMWD Standard Drawings 1,
CMWD Standard Specifications 0991 0, 15000, 15041 , 15044, 15056, 15057, 16061 ,
15064,15074,15108 and 151 12 \I
1.4 SERVICE APPLICATION
A. Resilient wedge gate valves (RWGVs) shall be installed on potable and recycled
water mains and appurtenances in accordance with the Approved Plans and the Standard Drawings.
Resilient wedge gate valves shall be used for openlclosed operaGons, throttling
service and frequent operation after long periods of non-actuation. 8.
C. In general, resilient wedge gate valves shall be used when valves are required on
pipelines and appurtenances IOOm (4") through 400mm (16").
D. Valves for pipelines sized 450mm (18") and larger generally require the use of butterfly valves (BFV) in accordance with Section 151 02.
1.5 SUBMITTALS
The following items shall be submitted for review and approval per Section 2-5.3, prior to ordering or delivery of resilient wedge gate valves.
A. An affidavit from the valve manufacturer stating that valves have successfully
passed hydrostatic tests in accordance with AWWA C509 and manufacturer's
own coatings tests.
8. The valve manufacturer's catalog data showing the size to be used, valve
dimensions, pressure rating and materials of construction.
C. Manufacturer's catalog data and proof of NSF certification for the lining materials
to be used.
January 2004 Resilient Wedge Gate Valves (RWGVs)
Twin D Pump Station (860-3-TD) Contract 38891 151 00-1
e 1.6 SIZING OF VALVES
Valves shall be the same size as the line in which they are installed unless otherwise
noted on the Approved Plans.
1.7 VALVE ENDS
Valve ends shall be compatible with the piping system in which they are being installed
in accordance with the Approved Plans or directed by the District Engineer.
Ductile-iron flanges shall be in accordance with Section 15056.
1.8 VALVE TESTING
Resilient wedge gate valves shall be hydrostatically tested and valve coatings shall be
holiday detected prior to shipment to the field in accordance with the testing procedures
shown in Appendix A. Valves delivered to the site prior to successful hydrostatic testing
and holiday detection shall be subject to rejection.
I ! 1.9 DELIVERY, STORAGE AND HANDLING
Valves shall be delivered and stored in accordance with AWWA C550. The port
openings shall be covered with plastic, cardboard or wood while in transit and during
storage in the field. These covers shall remain in place until valves are ready to be
instaied. Valves shall not be stored in contact with bare ground. Valves shall-not be
stacked.
1.1 0 "NOT USED"
1.11 POLYETHYLENE WRAP
Polyethylene wrap shall be used for the buried installation of resilient wedge gate valves
in accordance with Section 15000.
PART 2 MATERIALS
2.1 RESILIENT WEDGE GATE VALVES (RWGV's)
A. Resilient wedge gate valves and appurtenant components and materials shall be
selected from the Approved Materials List.
B. RWGVs shall be ductile-iron in accordance with AWWA C509 and C515 except
as modified herein.
C. Each valve shall have a smooth unobstructed waterway free from any sediment
pockets.
D. All RWGVs shall be leak-tight at their rated pressure.
January 2004 Resilient Wedge Gate Valves (RWGV's)
Twin D Pump Station (860-3-TD) Contract 38891 151 00-2
E. RWGVs shall have a non-rising low-zinc bronze or stainless steel stem, opened
by turning left (counterclockwise).
F. Stem seals shall be the O-ring type incorporating a minimum of two rings as
required by AWWA (2509.
G. Low-friction torque-reduction thrust washers or bearings shall be provided on the
stem collar.
H. Wedge (gate) shall be fully encapsulated with a bonded-in-place Nitrile elastomer
covering. Minimum thickness of the rubber seating area shall be 6.35mm (1/4").
Valves for buried applications shall be provided with a 50mm (2") square
operating nut, and valves located above ground or in structures shall be
equipped with a hand wheel in accordance with AWWA C509 unless otherwise
indicated on the Approved Plans.
RWGV interior and exterior surfaces (except for the encapsulated disc) shall be
coated as described below. ,
All bolts and nuts used in the construction of RWGVs shall be Type 316 stainless
steel.
1.
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K.
2.2 EPOXY LINING AND COATING
Epoxy linings and coatings for valves shall be provided in accordance with AWWA C210,
C213, and C550, with the following modifications:
A. Epoxy lining and coating of valve surfaces shall be performed by the
manufacturer in a facility with qualified personnel, where the environment can be
controlled. Epoxy lining and coating of valves in the field is prohibited.
B. Repairs made to manufactures applied coatings shall be performed in a facility
with qualified personnel, where the environment can be controlled. The facility
shall be approved by the valve manufacturer.
C. Surface preparation shall be as detailed in SSPC-SP5, White-Metal Blast
Cleaning.
D. Liquid epoxy lining and coating materials shall be listed in the NSF Listing for
Drinking Water Additives, Standard 61, certified for use in contact with potable
water.
E. The minimum dry film thickness for epoxy linings shall be 0.203mm (0.008" or
8 mils). Liquid epoxy lining shall be applied in two (2) coats in accordance AWWA
c210.
F. Powder epoxy coating materials shall contain one hundred percent (1 00%)
solids, in accordance with AWWA C213.
January 2004 Resilient Wedge Gate Valves (RWGVs) Twin D Pump Station (860-3-TD) Contract 38891 151 00-3
2.3
2.4
2.5
9 GATE WELLS AND EXTENSION STEMS
Gate wells and extension stems for buried valves shall be in accordance with Section
15000 and selected from the Approved Materials List. i
CONCRETE
Concrete used for anchor or thrust blocks shall be Class 500-C-3250. 1
POLYETHYLENE WRAP
Polyethylene wrap shall be in accordance with Section 15000 and selected from the
Approved Materials List.
I PART 3 EXECUTION
3.1
3.2
3.3
3.4
3:5
INSTALLATION
A. Install valves with the bolt holes straddling the vertical centerline of pipe ind the
operating nut in the vertical position unless otherwise noted on the Approved
Plans. 1
B. Valves shall be installed in accordance with the manufacturer's recommendations
and the applicable section of these specifications for the piping material and joint
type being used.
C.
POLYETHYLENE WRAP
Joints shall be cleaned and installed in accordance with Section 15056.
,
Installation of polyethylene wrap for buried valves shall be in accordance with Section
15000.
CONCRETE
Concrete thrust, anchor, and support blocks shall be installed in accordance the
Standard Drawings. The concrete shall be placed so that valves and valve operators will
be accessible for repairs or replacement.
GATE WELLS AND EXTENSION STEMS
Gate wells and extension stems for buried valves shall be installed in accordance with
Section 15000 and the Standard Drawings.
DISINFECTION OF VALVES
Disinfection and flushing of valves shall be in accordance with Section 15041, as part of
the process of disinfecting the main pipeline. The valves shall be operated during the
disinfection period to completely disinfect all internal parts.
January 2004 Resilient Wedge Gate Valves (RWGV's)
Twin D Pump Station (860-3-TD) Contract 38891 151 00-4
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3.6 HYDROSTATIC TESTING e Valves shall be hydrostatically tested in conjunction with the pipeline in whichithey are
installed in accordance with Section 15044.
3.7 FIELD PAINTING AND COATING i I The exterior of valves installed above ground or exposed in vaults or enclosures shall be
field painted in accordance with Section 09910.
END OF SECTION
January 2004 Resilient Wedge Gate Valves (RWGV’s)
Twin D Pump Station (860-3-TD) Contract 38891 151 00-5
SECTION 15108 AIR RELEASE VALVE, AIR AND VACUUM VALVE,
AND COMBINATIONAIR VALVE ASSEMBLIES '
PART I GENERAL
1 .I DESCRIPTION
i
This section includes the materials and installation instructions for above ground air release valve, air and vacuum valve, and combination air valve assemblies.
I The term "air valve" is used generically in this specification to refer to requirements
common to all of the specified air release valves, air and vacuum valves, and combination air valves. Otherwise, the various types of air valves are addressed by the individual designations commonly used in AWWA and industry standards.
1.2 REFERENCE STANDARDS
The publications listed below form part of this specification to the extent referencdd and are referred to in the text by the basic designation only. Reference shall be made*o the latest edition of said standards unless otherwise called for. \
American Water Works Association (AWA) C512 Standards for Combination Air Valve Assemblies 0 1.3 RELATED WORK SPECIFIED ELSEWHERE
CMWD Standard Drawings CMWD Standard Specifications 0991 0, 15000, 15041 , 15044, 15056, 16057, 15061 ,
15064,151 00,16640
1.4 SERVICE APPLICATION
A. Combination air valves are generally installed on all potable and recycled water
mains at high points and where shown on the Approved Plans and in accordance
with the Standard Drawings.
B. Unless otherwise directed by the District Engineer, combination air valves will be required as indicated below:
1. 25mm (1") combination air valve assemblies shall be installed on pipeline
sizes 150mm (6") and 200mm (8).
2. 50mm (2") combination air valve assemblies shall be installed on pipeline sizes 250mm (10") and 300m (12").
3. Multiple (2") 50mm (4") combination air valve assemblies shall be installed on pipeline sizes 400mm (16") and 500mm (20").
4. 150mm (6") combination air valve assemblies shail be installed on
pipeline sizes 600mm (24") through 900mm (36").
January 2004 Air Release Valve, Air 8 Vacuum Valve, &Combination Air Valve Assemblies
Twin 0 Pump Station (860-3-TD) Contract 38891 15108-1
1.5
1.6
1.7
m C. Air release valves and air and vacuum valves shall be installed in accordance
with the Approved Plans or as directed by the District Engineer.
DELIVERY, STORAGE, AND HANDLING
Valves shall be delivered and stored in accordance with AWWA C550. The port
openings shall be covered with plastic, cardboard, or wood while in transit and during
storage in the field. These covers shall remain in place until the valve is ready to be
installed. Valves shall not be stored in contact with bare ground. Valves shall not be
stacked.
"NOT USED"
WARNlNGllDENTlFlCATlON TAPE
WamingAdentification tape shall be installed for air valve assemblies in accordance with
Section 15000.
PART 2 MATERIALS
2.1 COMBINATION AIR VALVES
A. Combination air valves and appurtenant components and materials suitable for
the system pressure shall be selected from the Approved Materials List.
Combination air valves shall comply with AWWA C512 except as modified
herein. B.
C. 25m (1") and 50mm (2") combination air valves shall be the single-body type
incorporating stainless steel internal components and National Pipe Threaded
(NPT) inlet and outlet configurations.
D. 1OOmm (4") and 150mm (6") Combination Air Valves shall be the single-body
type. Valves shall incorporate stainless steel internal components, protective
hood and flanged inlet.
Internal protective epoxy coatings shall be provided in accordance with AWWA
C550. E.
I. Liquid epoxy lining and coating materials shall be listed in the NSF Listing
for Drinking Water Additives, Standard 61 , certified for use in contact with
potable water.
2. The minimum dry film thickness for epoxy linings shall be 0.203m (0.008''
or 8 mils). Liquid epoxy lining shall be applied in two (2) coats in
accordance with AWWA C210.
January 2004 Air Release Valve, Air & Vacuum Valve, &Combination Air Valve Assemblies
Twin D Pump Station (860-3-TD) Contract 38891 151 08-2
2.3 0.
2.4
2.5
2.6
2.7
@ PART3 EXECUTION
3.1
3.2
3.3
ENCLOSURES
Air Valve Enclosures shall be selected from the Approved Materials List.
CONCRETE
Concrete used for anchor or thrust blocks and equipment pads shall be in accordance
with Section 03000.
BREAK-AWAY BOLTS
Combination air valves, air release valves and air and vacuum valves located above
ground sized 1OOmm (4") and larger shall be installed with break-away bolts in
accordance with the Standard Drawings and selected from the Approved Materials List.
WARNlNGllDENTlFlCATlON TAPE
Waming/ldentification Tape shall be in accordance with Section 15000 and selected
FIELD PAINTING AND COATING
Field painting and coating materials shall be in accordance with Section 09910 and
0991 5 and selected from the Approved Materials List.
1 from the Approved Materials List. '1 I
INSTALLATION
A. Air valve assemblies shall be provided as shown on the Approved Plans.
Additional air valve assemblies may be required in areas of potential air
entrapment, at the discretion of the District Engineer.
6. Air valve assemblies shall be installed relative to street improvements in
accordance with the Standard Drawings.
C. Connections for the air valve assemblies shall be made within a section of the
main line no closer than 600mm (24") to a bell, coupling, joint or fitting.
CONCRETE
Concrete thrust or anchor blocks and equipment pads shall be installed in accordance
with the Standard Drawings.
WARNlNGllDENTlFlCATlON TAPE
Waming/ldentification Tape shall be installed in accordance with Section 15000 and the
Standard Drawings.
January 2004 Air Release Valve, Air & Vacuum Valve, &Combination Air Valve Assemblies
Twin D Pump Station (860-3-TD) Contract 38891 151 08-3
3.4 DISINFECTION
Air valve assemblies shall be disinfected in accordance with Section 35041 in
conjunction with disinfecting the main to which it is connected. The assembly valves
shall be operated and the assembly flushed to completely disinfect all intemal parts.
3.5 H YDROSTATJC TESTING
Air valve assemblies shall be hydrostatically tested in accordance with Section 15044 in
conjunction with the pipeline to which they are connected.
3.6 FIELD PAINTING AND COATINGS
A. Field repairs to the enclosure shall not be permitted. Enclosures requiring repairs
to the coating shall be returned to the supplier or coating vendor for repairs or
recoating in accordance with Section 09915.
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END OF SECTION
'1
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January 2004 Air Release Valve, Air & Vacuum Valve, &Combination Air Valve Assemblies
Twin D Pump Station (860-3-TD) Contract 38891 15108-4
SECTION 15112
BACKFLOW PREVENTERS
PART 1 GENERAL
1.01
1.02
I
1.3
1.4
DESCRIPTION i
This section includes materials, installation, and testing of reduced-pressure backflow
prevention devices and check valve and double check valve assemblies.
REFERENCE STANDARDS
The publications listed below form part of this specification to the extent refereyced and
are referred to in the text by the basic designation only. Reference shall be made to the
latest edition of said standards unless otherwise called for.
State of California Department of Health Services Division of Drinking Water and
Environmental Management, Approved Backflow Prevention Assemblies for Service
Isolation. \
RELATED WORK SPECIFIED ELSEWHERE !
Agencies of Jurisdiction Rules and regulations regarding "Cross Connection Control and
Backflow Prevention" CMW D Standard Drawings
CMWD Standard Specifications 0991 0, 15000, 15041, 15044, 15056, 15057, 15061 ,
15064 and 151 00
SERVICE APPLICATION
A. Reduced-pressure backflow prevention assemblies shall be provided on all
commercial, industrial irrigation and multi-family water services.
B. Reduced-pressure backflow prevention assemblies shall be provided on all
irrigation services by potable and recycled water.
C. Reduced-pressure backflow prevention assemblies shall be provided on potable
water services where recycled water, well water or any other water supply is
served to the same property.
D. Reduce pressure backflow preventers assemblies shall be provided at all points
of connections to District sources at construction sites.
E. Double check detector assemblies shall be provided on all fire services.
F. The District shall be the final authority as to the location, installation, and type of
backflow prevention device required.
January 2004
Twin D Pump Station (860-3-TD) Contract 38891
Backflow Preventers
15112-1
1.5
1.6
1.7
1.8
GENERAL DESIGN CONSIDERATIONS
A. The Design and construction of the backflow prevention assembly shall meet the
requirements called for in this specification except that any modifications
specifically shown on the Approved Plans shall take precedence over these
general standards.
B. The nominal size of the backflow prevention device shall be equal to or greater
than the size of the purchased meter. For example, a 25mm (1") meter shall have
a 25mm (1") or larger backflow device.
The assembly shall include same size valves located on either side of the
backflow prevention assemblies. Four test cocks shall be appropriately located
on the assembly for testing and certification.
The nominal size of double check detector assemblies shall be as shown on the
Approved Plans or as directed by the Fire Department.
C.
D.
E. Enclosures and concrete slabs shall be provided only as shown on the Approved
Plans. 1
DELIVERY, STORAGE AND HANDLING
Backflow prevention assemblies shall be delivered and stored in accordance with
AWWA C210, AWWA C213, and AWWA C550. The port openings shall be covered with
plastic, cardboard, or wood while in transit and during storage in the field. These covers
shall remain in place until the backflow assembly is ready to be installed. Backflow
assemblies shall not be stored in contact with bare ground. Backflow assemblies shall
not be stacked.
RECYCLED WATER IDENTIFICATION
Backflow prevention assemblies and enclosures for recycled water shall be identified
with purple-colored coating, identification labels, or signs in accordance with Section
15151.
WARN1 NG/I DENTI FlCATlON TAPE
WamingAdentification Tape shall be installed for backflow prevention assemblies in
accordance with Section 15000.
PART 2 MATERIALS
2.1 BACKFLOW PREVENTION ASSEMBLIES
Backflow prevention assemblies shall be among those listed on the list of "Approved
Backflow Prevention Assemblies for Service Isolation" as issued by the State of
California Department of Health Services, Division of Drinking Water and Environmental
Management.
January 2004
Twin D Pump Station (860-3-TD) Contract 38891
Backflow Preventers
15112-2
2.2 CONCRETE
Concrete used for slabs and anchor or thrust blocks shall be in accordance with 0
Standard specifications for Public Works Construction.
2.3 WARN IN GI1 DENTI FI CATION TAPE
Waming/ldentification Tape shall be in accordance with Section 15000 and the
Approved Materials List.
PART3 , EXECUTION
3.1 INSTALLATION
A. Installation shall comply with the latest edition of the Uniform Plumbing Code,
applicable local agency and District requirements.
B. Backflow prevention assemblies shall be installed in accordance with the '
Standard Drawings.
C. Water service and fire service shut-off valves will be secured closed during
installation until an approved backflow prevention device is installed and tested in
compliance with this specification.
When static pressure exceeds 1.03MPa (15Opsi), or when recommended by the
backflow device manufacturer, a pressure-reducing valve shall be installed as
shown on the Standard Drawings.
D.
3.2 WARNlNGllDENTlFlCATlON TAPE
Warning/ldentification Tape shall be installed in accordance with Section 15000 and the
Standard Drawings.
3.3 CONCRETE
Concrete thrust or anchor blocks and slabs shall be installed in accordance with
Standard Drawings.
3.4 ENCLOSURES
Enclosures shall be installed where shown on the Approved Plans in accordance with
the Standard Drawings.
3.5 DISINFECTION
Disinfection and flushing shall be performed in accordance with Section 15041 , as part
of the process of disinfecting the main pipeline. The backflow assemblies shall be
operated during the disinfection period to completely disinfect all internal parts.
January 2004
Twin D Pump Station (860-3-TD) Contract 38891
Backflow Preventers
15112-3
3.6 HYDROSTATIC TESTING
Backflow assemblies shall be hydrostatically tested in conjunction with the pipeline to
which they are connected in accordance with Section 15044. i
3.7 TESTING
The District will inspect and initially test each backflow prevention Assembly after
inspection of its proper installation is complete.
Required maintenance of the backflow prevention device and appurtenances and annual
testing of the device shall be the owner‘s responsibility.
END OF SECTION I
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‘I ’
January 2004 Twin D Pump Station (860-3-TD) Contract 38891
Backflow Preventers
151 12-4
SECTION 151 51
RECYCLED WATER FACILITIES (OFFSITE)
PART 1 GENERAL
I .01 DESCRIPTION
i
This section includes special provisions, materials, and identification of offsite recycled
water systems.
1 1.02 REFERENCE STANDARDS
The publications listed below form part of this specification to the extent referenced and
are referred to in the text by the basic designation only. Reference shall be made to the
latest edition of said standards unless otherwise called for.
(TO BE ADDED LATER)
1.03 RELATED WORK SPECIFIED ELSEWHERE
!
!
\'
CMWD Standard Drawings
CMWD Standard Specifications 02202, 02223, 03000, 0991 0, 15000, 15041 , 15044,
15056,15057, 15061 , 15064,15074, 151 00,151 02,151 08, and 151 12 8 1.04 APPROVED USE
All potential applications of recycled water shall be reviewed and approved by the
District prior to installation of facilities. The facilities shall be constructed in ,accordance
with the procedures and requirements of the District. No connections to recycled water
main(s) shall be installed unless shown on the Approved Plans or permission has
othewise been granted in writing by the District.
1.05 OFFSITE AND ONSITE CRITERIA
Recycled water facilities are separated into two categories:
A. "Offsite" (pre-meter, public) recycled water facilities consist of those facilities
which are on the upstream side of the meter. These facilities are, or will be,
owned, operated and maintained by the District. The Specification Section will
detail the requirements for construction of Offsite Recycled Water Facilities.
B. "Onsite" (post-meter, private) recycled water facilities consist of those facilities
which are on the downstream side of the water meter. These are facilities which
will be owned, operated and maintained by the customer. Refer to Section 151 52
for the detailed requirements of onsite irrigation and plumbing systems.
January 2004 Recycled Water Facilities (Offsite)
Twin D Pump Station (860-3-TD) Contract 38891 15151-1
-
e 1.06 DESIGN CRITERIA
A. A licensed Civil Engineer registered in the State of California shall be responsible
for the design of offsite recycled water facilities, including the preparation of
plans and specifications.
B. Plans for offsite potable and recycled water systems in the same street or
easement shall show both potable and recycled water mains on the same sheets
of plans.
C. The minimum depth of cover for recycled water mains shall be in accordance
with Section 02223 or as shown on the Approved Plans. In general, where both
recycled and potable water mains are to be installed in the same street or
easement, the top of pipe of the recycled water main shall be 300mm (12") below
the top of the potable water main.
D. A horizontal separation of 3.05m (1 O'), and a vertical separation of 300mm (1 2")
shall be maintained between recycled water lines and potable water lines, and
between recycled lines and sanitary sewers. Recycled water lines shall be
designed to cross under potable water mains and above sanitary sewers.
I 'I I
E.
F;
G.
H.
I.
In the event that it is not possible to maintain the required separation and relative
positions between recycled water lines, potable water lines, and sanitary sewers,
special construction shall be required in accordance with the Standard Drawings
and as directed by the District Engineer.
The minimum size distribution main shall be 150mm (6"). The District shall be the
final authority concerning the size and pressure rating of the distribution main.
Offsite recycled water mains shall typically be located on the opposite side of the
street or easement from the potable water main.
Offsite recycled water mains shall be designed with service laterals
perpendicular to the main. Service laterals shall be a minimum of 50mm (2") in
size. Larger sized laterals may be required. A service lateral shall be designed
for each lot or area to be served with recycled water. A service lateral shall not
be designed to serve opposite sides of a street or easement and shall not be
located in street medians or center islands.
Offsite recycled water systems shall not be designed with fire hydrants, wharf
heads, or other appurtenances which would allow recycled water to be used for
other than the approved uses unless the appurtenances are expressly approved
by the District.
J. Offsite recycled water mains shall not be designed with temporary connections
unless expressly approved by the District. When permitted, temporary
connections shall be located, sized, and designed according to the requirements
of the District.
January 2004 Recycled Water Facilities (Offsite)
Twin D Pump Station (860-3-TD) Contract 38891 15151-2
1.07 PROVISIONS FOR FUTURE USE OF RECYCLED WATER
In those areas where the District has determined that recycled water will be supplied to
the subject area in the future but is not currently available, recycled facilities shall be
installed as detailed in this Section. Provisions for future connection to the permanent
recycled water system shall be included in the initial installation of the system as
directed by the District. In the interim, the new recycled system will be supplied with
potable water via a temporary connection performed by the Contractor as directed by
the District. This temporary service connection shall be provided in accordance with the
Standard Drawings and shall incorporate a master backflow prevention device located
and installed in accordance with Section 151 12. Connections between offsite recycled
water mains and potable water mains shall only be permitted when the recycled water
main is to temporarily convey potable water. No connection of any other kind shall be
permitted between the potable water and recycled water mains. In the future, the Owner
shall be responsible to remove the temporary service and transfer the main to a
permanent connection to the recycled system when it becomes available.
e
’i PART 2 MATERIALS
2.01 OFFSITE RECYCLED WATER FACILITIES
A. Materials for offsite recycled water systems shall generally consist of those
specified for potable water systems as detailed within these Standard
Specifications, the Standard Drawings, the Approved Materials List, and as
modified herein.
B. Recycled water mains sized 150mm (6”) and larger shall be PVC in accordance
with Section 15064. PVC pipe for recycled water system applications and related
gate well casings shall be manufactured in the purple color. Pipe markings shall
include the designation ”RECYCLED WATER” in addition to the standard factory
labeling required by AWWA.
C. Devices and appurtenances such as air valve assemblies, backflow preventers,
blowoff assemblies, butterfly valves, gate valves, services and other items shall
be provided in accordance with the various applicable Sections of these
Standard Specifications, the Standard Drawings and the Approved Materials List.
Color coding and other identification shall be provided as indicated below.
Miscellaneous materials such as gate wells, meter boxes, warning tape, tracer
wire, copper tubing, ductile iron fittings, brass and bronze fittings and devices,
and all related items shall be provided in accordance with the various applicable
Sections of these Standard Specifications, the Standard Drawings and the
Approved Materials List. Color coding and other identification shall be provided
as indicated below.
D.
E. Warninglldentification Tape shall be as specified in Section 15000 in accordance
with the Approved Materials List.
January 2004 Recycled Water Facilities (Off site)
Twin D Pump Station (860-3-TD) Contract 38891 151 51 -3
F. Paint products for protection and identification shall be provided as sp,ecified
below and in accordance with Sections 0991 0,0991 5 and the Approved ,
Materials List.
Warning signs and labels shall be post mounted aluminum or vinyl, self adhesive
with peel off paper backing, bearing the warning "RECYCLED WATER - DO
NOT DRINK or the equivalent, in English and Spanish, along withi the
international "Do Not Drink" symbol. Warning labels and signs shah have a
purple background with contrasting lettering and markings.
i
G.
H. Utility identification tape shall be 0.102mm (0.004" or 4 mils) PVC, pressure-
sensitive adhesive-backed tape in rolls of various widths. The tape shall be color-
coded purple and shall bear the designation "RECYCLED WATER" or the
equivalent, in contrasting permanent lettering at approximately 300mm (1 2")
intervals. Identification tape will generally be used in the 50mm (2") width, to
identify buried materials and components as detailed below.
EXECUTION '. PART 3
3.01 OFFSITE RECYCLED WATER FACILITIES \
'1
In general, offsite recycled water facilities shall be installed in accordance with the
requirements for potable water materials and facilities within these Specifications, the
Standard Drawings and the Approved Plans.
3.02 FIELD IDENTIFICATION - PIPING AND APPURTENANCES
Recycled water mains and appurtenances shall be identified with purple-colored coding
and identification la bels and signs as specified herein.
A. PVC pipe and related gate well casings shall be colored purple as manufactured.
If purple-colored PVC pipe in the specified size or class is not readily available
from suppliers, standard colored PVC pipe may be used and sleeved with a
0.203mm (0.008'' or 8 mils) purple-colored, high-density polyethylene
encasement sleeve which totally encloses the pipe.
B. Buried items that are not available from the manufacturer in the purple color shall
be identified in the field by means of utility identification tape applied to the
surface of the items. Valves, ductile iron fittings and similar items shall receive a
band of the tape applied circumferentially at the ends of the fittings adjacent to
connections to the adjoining piping sections, and to the operator portions of gate
and butterfly valves. The identification tape shall also be used to secure the
polyethylene wrap specified for the various piping materials and appurtenances.
Copper tubing and appurtenant bronze fittings shall be identified by means of
utility identification tape applied continuously along the upper surface of the
entire length of the line.
C. Meter and blowoff boxes shall be colored purple as manufactured.
January 2004 Twin D Pump Station (860-3-TD) Contract 38891
Recycled Water Facilities (Offsite) 15151-4
D. Accessible items that are not available from the manufacturer in the purple color,
such as those located at grade, above ground and within meter boxes and vaults
shall be identified in the field by means of a paint coating in the purple cdor.
Meters, blowoff piping and blowoff box covers or blowoff manhole covers, valve
box lids, air valves and enclosures, piping, valves, backflow devices and all other
items either accessible or exposed to view, shall be identified by m ans of the
the substrate material and the degree of protection required for the various
items, in accordance with Section 09910 and the Approved Materials List.
purple coating or integral purple color. The coating system shall be ‘6 uitable for
E. Tracer wire shall be installed in accordance with Section 15000 and the Standard
I Drawings.
F. WarningAdentification tape shall be installed in accordance with Section 15000 3
and the Standard Drawings.
3.03 LABELS AND SIGNAGE
Labels shall be installed on recycled facilities exposed to view including above ground
piping and appurtenances, meter and blowoff box covers, and where indicated dn the
Standard Drawings and the Approved Plans. Signs shall be installed where necetsary
and as indicated on the Approved Plans.
3.04 DISINFECTION AND BACTERIOLOGICAL TESTING
In the event the recycled water mains are installed with provisions for future use for
transporting recycled water, but will initially transport potable water (see item above),
disinfection, flushing and bacteriological testing shall be performed in accordance with
Section 15041.
3.05 HYDROSTATIC TESTING
Potable water shall be used for filling, flushing, and hydrostatic testing. Field hydrostatic
testing shall be performed in accordance with Section 15044.
3.06 BACKFLOW PREVENTION
During the course of flushing and disinfection and hydrostatic testing of the recycled
water mains, an appropriate backflow prevention device shall be installed on the
potable source piping to isolate the potable from the non-potable system in accordance
with Section 15044 and 151 12.
END OF SECTION
January 2004 Twin D Pump Station (860-3-TD) Contract 38891
Recycled Water Facilities (Offsite) 151 51 -5
SECTION 15800
HEATING AND VENTILATION EQUIPMENT
TECHNICAL SPECIFICATIONS
PART 1 -GENERAL
i
1 .Ol
I
1.02
1.03
1.04
I Specific Project Description
The Contractor shall furnish, install, and test the ventilation equipment for the pump
building including, intake louvers and exhaust ventilators, and accessories as specified
herein and shown on the Drawings.
Specific Project Louver Requirements
Exterior Intake Louvers for EauiDment Buildinq
Equipment building intake louvers shall be the fixed louver type suitable for mounting in
,
the building masonry wall. i
Specific Project Exhaust Ventilator Requirements !
'1
Contractor shall furnish and install exhaust ventilators as manufactured by Loren Cook,
or equal as follows and shown on the Drawings:
Minimum Maximum
Ventilator CFM@ Minimum Sound Location No. Type 1/4" S.P. HP Power Remarks
Equipment
Building EFI Roof 4,835 1 79dB (1) (2)
EF2 Roof 4,835 1 79dB (1) (2)
(1) 460 VI 3 phase, two speed, two winding motor. Low speed shall be one-half of high
(2) Each ventilator shall be operated by timer and thermostat control.
speed.
Submittals
All submittals shall be in accordance with the General Provisions, Section 2-5.3.
A. Data to be Submitted by Contractor
Contractor shall submit complete information, drawings, and technical data for all
equipment and components, including, but not limited to, the following:
materials, fabrication, assembly, detailed specifications, performance curves,
and installation instructions and dimensions.
November 2003
Twin D Pump Station (860-3-TD) Contract 38891
Heating 8 Ventilation
15800-1
0 B. ODeration and Maintenance Manual
Contractor shall submit a detailed operation and maintenance manual for each
item of equipment.
PART 2 - PRODUCTS
2.01 Wall Louvers
A. General
Louvers shall be intake or exhaust as shown on the drawings of the fixed (unless
otherwise specified), fiat blade, 45" type, having a width of 4" and sized to fit the
opening specified.
Louvers shall be suitable for mounting in stud wall, with gypsum board and
stucco, concrete walls, or masonry walls as shown on the Drawings.
Louvers shall be anchored into walls (from inside of building) at comers, top and \
side, and bottom and side with wood lag screws or expansion anchors as
applicable. Additional anchors shall be provided such that maximum anchorage
space shall be 24" O.C.
Louvers shall be weatherproof with edges caulked with exterior grade caulking
compound.
- B. Wall Mounted Stationarv (Fixed) Louvers
Fixed blade (stationary) intake or exhaust louvers shall be flat blade type of
formed steel with blades at 45" angle. Frame shall be minimum 18 gauge
galvanized steel and blades shall be minimum 20 gauge galvanized steel.
Each louver shall be provided with a removable 1/4" galvanized 19 gauge mesh
insect screen with galvanized steel frame. Screen shall be attached with screws.
Screen shall be located on interior side of wall.
Stationary wall louvers shall be Model L811 as manufactured by Ruskin
Manufacturing, Model 609A as manufactured by Airolite, or equal.
C. Wall Mounted Adiustable Louver
Adjustable blade intake or exhaust louvers shall be of formed steel construction
with frame and blade minimum 18 gauge galvanized steel.
Blades shall be positioned at 45" when fully opened. Crank handle shall be
provided for adjusting and shall be provided with an extension where wall
thickness necessitates.
Insect screen as specified per Item 2.01 .B, herein, shall be provided.
November 2003
Twin D Pump Station (860-3-TD) Contract 38891
Heating & Ventilation
15800-2
D. Wall Mounted Automatic Gravity TvDe Louvers
Adjustable wall louvers shall be Model L745 as manufactured by Ruskin
Manufacturing, Model 645 as manufactured by Airolite, or equal.
Where shown on the Drawings or specified herein, adjustable louvers shall be
recessed in the wall and be provided with a vandal protection type louver on
exterior.
Intake and exhaust automatic gravity type louvers shall be suitable for high
velocity and high static pressure and shall automatically open upon operation of
the ventilation system or radiator cooling exhaust fan. Louver shall be intake or
exhaust as shown on the Drawings and dictated by the ventilation system.
Louvers shall consist of 16 gauge galvanized formed steel frame and 14 gauge
aluminum tied blades with felt tip edges. Automatic gravity type louvers shall be
as manufactured by Louvers & Dampers, Inc., or equal.
Intake and exhaust openings shall be provided with weather protection fixed
louvers on exterior face and the gravity louvers on the interior face unless
otherwise specified.
J '
Where specified, intake and exhaust automatic louvers shall be provided with a
fixed vandal protection type louver as shown on the Drawings.
E. Wall Mounted Acoustical Louver
Formed steel acoustical wall louvers shall be provided where specified or shown
on the Drawings. Construction shall be similar to fixed wall louvers. Noise side
of louver shall include acoustical insulation covered with 22 gauge (minimum)
perforated galvanized steel. Minimum noise reduction of 16 dB at octave band
No. 4 shall be provided.
Insect screen as specified per Item 2.01 .B, herein, shall be provided.
Acoustic louver shall be 8" thick Model ACL 845 as manufactured by Ruskin
Manufacturing, Model 91 08 as manufactured by Airolite, or equal.
F. Wall Mounted Vandal Protection TvDe Louvers
Where specified herein or shown on the Drawings, fixed louvers of the vandal
protection type shall be provided for air supply or exhaust. Louvers shall be as
shown on the Drawings. Louvers shall be provided with insect screen as
specified in Part 2.01 .B, herein.
2.02 Roof Mounted Exhaust Ventilators, Low Profile Type with Hood
Roof exhaust ventilators shall be of low profile design with extruded aluminum hood of
the centrifugal, belt-driven type. Construction of the fan housing shall be of heavy
gauge aluminum.
November 2003
Twin D Pump Station (860-3-TD) Contract 38891
Heating & Ventilation
15800-3
The fan wheel
inclined blades
balanced.
shall be all-aluminum of the centrifugal blower type featuring backward
and a tapered inlet shroud. Wheels shall be statically and dynamically
Motors shall be of the heavy duty, permanently lubricated, sealed ball bearing type.
Drives shall be sized for 165% of motor horsepower capabilities and of the cast iron
type, keyed to the fan and motor shafts. Variable pitch drives shall be $tandard. Fan
shaft shall be of steel construction, turned, ground, and polished to precis& tolerances in
relationship to the hub and bearings. Drive belts shall be of the oil-resistant, non-static,
non-sparking type with life expectancy of over 24,000 hours. Bearings shall be flanged
and of the permanently lubricated, permanently sealed, ball bearing type capable of over
200,000 hours bearing life. The entire drive assembly and wheel shall be removable, as
a complete unit, from the support structure without disassembling the external fan
housing. The complete drive assembly shall be mounted on rubber vibration isolation.
I
Direct drive units shall be of identical construction as belt drive units, except for drives,
belts, and fan shaft bearings. Fans shall be licensed to bear the AMCA ratings seal for
air and sound performance. Fans shall be Model HLC as manufactured by Loren Cook,
Roof exhausters shall be mounted on pre-fabricated curbs as shown on the Drawidgs.
Model LD/LB as manufactured by Greenheck, or equal. i
‘I
2.03 Ductwork and Miscellaneous Accessories
A. Construction
Ducts shall be sheet metal constructed with airtight joints and seams in
accordance with ASH RAE standards and SMACNA Duct-Construction Manual.
All joints shall be taped with pressureless tape and adhesive, except welded or
soldered joints. Ductwork materials shall be galvanized steel or aluminum,
unless otherwise specified. Minimum duct gauges required are as follows:
Maximum Size Galvanized Steel Aluminum
of Ducts (In.) U.S. Standard Gaucle B and S Gauae
12 and less
I3 through 30
31 through 54
55 through 84
26.
24
22
20
24
22
20
18
B. Sup~orts
Supports for horizontal ducts shall be galvanized steel angles with hanger rods.
Supports for vertical ducts shall be band iron strap or angle bracket type. Inlet
ducts shall be amply braced to withstand maximum negative pressure.
C. Flexible Connectors
Flexible duct connections shall be made with banded or flanged 8 oz. canvas or
reinforced plastic, or equal at each point where a blower unit is connected to a
November 2003 Heating & Ventilation
Twin D Pump Station (860-3-TD) Contract 38891 15800-4
duct. A minimum clearance of 3" between the duct and source of vibration shall
be maintained. i
PART 3 - EXECUTION
3.01 General I
Contractor shall examine all equipment upon arrival at jobsite and determine that it is
the specified equipment, or approved replacement, and that it is in good condition.
Contractor shall connect all necessary electrical power including furnishing of all
materials and installation shall be in accordance with the Basic Electrical specifications
and controls in accordance with System Description Technical Specifications.
I necessary materials in addition to that included in the specified equipment: Wiring
I
3.02 Start-up and Instruction
Contractor shall arrange for qualified representatives of the manufacturer to insphct the
installation and perform start-up of the equipment and to demonstrate reyuired
performance to the satisfaction of the Owner.
Contractor shall balance the ventilation systems by adjusting louvers or grills to obtain
even air flow across a room. Contractor shall furnish calibrated (certification required)
\
air velocity meters for such balancing. *.,
Contractor shall arrange for not less than 1 hour of adequate instruction of operators
selected by the Owner at a time acceptable to the Owner and the manufacturers.
Instruction shall be for operation and routine maintenance and repair. df ventilation
equipment.
END OF SECTION
November 2003
Twin D Pump Station (860-3-TD) Contract 38891
Heating 8 Ventilation
15800-5
SECTION 16040
SHORT CIRCUITICOORDINATION STUDY
TECHNICAL SPECIFICATIONS
PART 1 - GENERAL
1.01 Scope
The Contractor shall provide short circuit and protective device evaluation and
coordination study to verify protective devices selected and selective tripping
coordination for proposed facilities.
The evaluations and study shall include all portions of the proposed electrical distribution
system from the normal power source or sources down to and including the smallest adjustable trip circuit breaker in the distribution system. Normal system connections
and those which result in maximum fault conditions shall be adequately covered in the
study.
The study shall be performed, stamped and signed by a registered electrical engineer in
the State of California. Credentials of the individual(s) performing the study and
background of the firm shall be submitted to the Owner for approval prior to start of the
work. A minimum of five (5) years experience in power system analysis is required for the individual in charge of the project. The firm performing the study shall provide
assistance during start up as required.
The Engineer performing the system studies shall furnish the Contractor with a listing of
the required data immediately after award of the contract and the Contractor shall
expedite collection of the data to assure completion of the studies prior to final approval
of the distribution equipment shop drawings and/or release of the equipment for
manufacture.
'
e
PART 2 - PRODUCTS
2.01 Short Circuit and Protective Device Evaluation and Coordination Study
A. The short circuit study shall be performed in accordance with the latest
applicable IEEE and ANSI standards. Provide calculation methods and
assumptions, the base per unit quantities selected, one-line diagrams, source
impedance data including power company system characteristics, typical
calculations, tabulations of calculation quantities and results, conclusions, and
recommendations. Calculate short circuit interrupting and momentary (when
applicable) duties for an assumed 3-phase bolted fault at each supply switchgear
lineup, unit substation primary and secondary terminals, low-voltage switchgear
lineup, switchboard, motor control center, distribution panelboard, pertinent
branch circuit panelboard, and other significant locations throughout the system.
Provide a ground fault current study for the same system areas, including the
associated zero sequence impedance data. Include in tabulations fault
impedance, X to R ratios, asymmetry factors, motor contribution, short circuit
kVA, and symmetrical and asymmetrical fault currents.
November 1997 Short CircuitlCoordination Study
Twin D Pump Station (860-3-TD) Contract 38891 16040-1
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B. In the protective device evaluation and coordination study include utility company
device characteristics, system medium-voltage equipment relay and device
characteristics, low-voltage equipment circuit breaker trip device chara'cteristics,
pertinent transformer characteristics, pertinent motor and generator
characteristics, and characteristics of other system load protective devices.
Include at least all devices down to largest branch circuit and :largest feeder
circuit breaker in each motor control center, and main breaker in branch
panel boards.
Provide time-current curves graphically indicating the coordination proposed for
the system. Include with each curve sheet a complete title and one-line diagram
with legend identifying the specific portion of the system covered by that
particular curve sheet. Include a detailed description of each protective device
identifying its type, function, manufacturer, and time-current characteristics.
Tabulate recommended device tap, time dial, pickup, instantaneous, and time
delay settings.
Include all adjustable settings for ground fault protective devices. Include
manufacturing tolerance and damage bands in plotted fuse charactehstics.
Show transformer full load and 150, 400, or 600 percent currents, transfbrmer
magnetizing inrush, ANSI transformer withstand parameters, and signWant
symmetrical and asymmetrical fault currents. Terminate device characteristic
curves at a point reflecting the maximum symmetrical or asymmetrical fault
current to which the device is exposed.
C. When emergency generator is provided, include phase and ground coordination
of the generator protective devices. Show the generator decrement curve and
damage curve along with the operating characteristic of the protective devices.
Obtain the information from the generator manufacturer and include the
generator actual impedance value, time constants and current boost data in the
study. Do not use typical values for the generator.
D. For motor control circuits, show the MCC full-load current plus symmetrical and
asymmetrical of the largest motor starting current and time to ensure protective
devices will not trip during major or group start operation.
2.02 Study Report
A. The results of the power system study shall be summarized in a final report. Six
(6) bound copies of the final report shall be submitted to Owner.
B. The report shall include the following sections:
I. . Descriptions, purpose, basis and scope of the study. ,
2. Tabulations of circuit breaker, fuse and other protective device ratings
versus calculated short circuit duties, and commentary regarding same.
November 1997
Twin D Pump Station (860-3-TD) Contract 38891
Short CircuitlCoordination Study
16040-2
3. Protective device time versus current coordination curves, tabulations of
relay and circuit breaker trip settings, fuse selection, and commentary regarding same. i
4. Fault current calculations including a definition of terms and guide for
interpretation of computer printout.
2.03 Modifications Required by Study
The Contractor shall coordinate the study results with the manufacturer and supplier of
the electrical equipment to incorporate the recommendations and modifications therein,
prior to fabrication. I
PART 3 - EXECUTION I
3.01 Utility Company Approval
A. Where required, copies of the final report shall be submitted to theiutility
company for their review and approval, Approved copies of the report shall be
submitted to the Owner. I
i
3.02 Field Settings
A. The Contractor shall perform field adjustments of the protective devices as
required to place the equipment in final operating condition. The settings shall
be in accordance with the approved short circuit study, protective device
evaluation study, and protective device coordination study.
Necessary field settings of devices and adjustments and minor modifications to
equipment to accomplish conformance with the approved short circuit and
protective device coordination study shall be carried out by the Contractor at no
additional cost to the Owner.
-,
8.
November 1997 Twin 0 Pump Station (860-3-TD) Contract 38891
Short CircuitlCoordination Study
16040-3
SECTION 16050
BASIC ELECTRICAL SPECIFICATIONS
PART I - GENERAL
1 .Ol Description
The Contractor shall furnish all labor, equipment, and materials to provide a complete and
operable electrical system, all accordance with the requirements of the Contract
Documents.
Reference Codes and Standards I .02
All electrical equipment and materials, including the design, construction, and installation
thereof, shall comply with the following codes and standards (latest editions), as
applicable. Where two codes or standards are at variance, the most stringent
requirements shall govern:
A. National Electric Code (NEC).
‘J
B. Basic Eleorical Regulations, Title 24, State Building Standards, California
Administrative Code.
C. Low Voltage Electrical Safety Orders, Title 8, Division of Industrial Safety, State of
California.
D. City and County Electrical Codes.
E. American National Standards Institute (ANSI).
F. National Electrical Manufacturers Association (NEMA).
G. National Fire Protection Association (NFPA).
H. Underwriters Laboratories, Inc. (UL).
1. Occupational Safety and Health Act (OSHA) Safety and Health Standards
(29CFR1910 and 29CFRl926), State Building Standards, and applicable local
codes and regulations.
All equipment and material furnished by the Contractor shall be listed by and shall bear the
label of Undetwriters Laboratories, Inc. (UL) or of an independent testing laboratory
acceptable to the local agency with jurisdiction over the electrical work.
November 2003 Twin D Pump Station (860-3-TD) Contract 38891
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16050-1
I .03 Submittals
I
A. Shop Drawincas i
All submittals shall be in accordance with the General Provisions, Section 2-5.3.
Contractor shall submit complete information, drawings, and technical data for all
equipment and components, including, but not limited to, the followijg :
1. Catalog data including catalog cut sheets, bulletins, brochures, etc.
Applicable sizes, model numbers, and options shall be clearly marked and
delineated.
Connection diagrams, terminal diagrams, and internal wiring diagkms. 2.
3. Equipment and material temperature limitations. I
4. Drawings for all grounding work not specifically shown.
5. Nameplates for all electrical panels, including nameplate material, lettering
height, and proposed inscriptions. \
1 B. Operation and Maintenance Manuals
Contractor shall submit detailed Operation and Maintenance Manuals for each item
of equipment in accordance with the Special Construction Provisions.
C. Record Drawinqs
Contractor shall maintain and keep current a complete record set of'construction
drawings showing every change from the Contract Drawings and Specifications
and the exact locations, sizes, and types of equipment and material installed.
Record drawings shall show all conduit runs (sizes and number), circuits, and
conductors (sizes and numbers). Record drawings shall show depths and
routing of all concealed and below grade electrical installations. Record
drawings shall be available to the Owner during construction and shall be
delivered to the Owner upon project completion.
1.04 Delivery, Storage, and Handling
A. Delivery
Deliver electrical materials and equipment in manufacturer's original cartons and
containers with seals intact. Deliver conductors on sealed reels. Deliver large
multi-component equipment in sections to facilitate field handling and installation.
B. Storacre
Unless designed for outdoor exposure, store electrical equipment and material of
the ground and under cover. Equipment and material shall be protected from
weather, corrosion, contamination, and deterioration. Dents, marred finishes,
November 2003
Twin D Pump Station (860-3-TD) Contract 38891
Electric
16050-2
and other damage shall be repaired to its original condition or replaced as
directed by the Owner. 4
C. Handling
All equipment and material shall be handled in accorda ce with the
points designed by the manufacturer. Equipment and material shall be handled
and installed as necessary to prevent damage.
manufacturer's recommendations. Large or heavy items shall A lifted at the
1.05 Public Utilities
I A. Contractor shall obtain electrical service requirements from public' utility
furnishing electrical power to the project. Contractor shall coordinate installation
of power service with public utility. Contractor shall obtain, at his expense, all
permits, licenses, and inspections required for electrical construction work by
public utilities having jurisdiction.
B. Contractor shall furnish and install all service conduit, fittings, transformer &d(s),
manholes, vaults, grounding, and conductors not furnished by the serving utility. \'
PART 2 - PRODUCTS
2.01 General ... ,
All equipment and materials shall be new, shall be listed by UL, and shall bear the UL
label, where UL requirements apply. All equipment and material shall be of industrial
grade and be capable of long term, reliable, and trouble-free service. Simildr equipment
and material items shall be products of the same manufacturer.
2.02 Grounding
A. Grounding and grounding components shall comply with the applicable
requirement of the NEC, Article 250.
8. Grounding cable shall be stranded copper and shall be sized in accordance with
Code requirements when sizes are not shown on the Drawings. Contractor shall
submit shop drawings for all grounding work not shown on the Drawings.
C. Grounding rods shall conform to ANSI/UL 467 and shall be copper-clad steel,
3/4-inch (minimum) in diameter and 10 feet (minimum) in length. Rods shall be
driven in the ground at least 9' -6" deep.
Provide the number of rods required to obtain proper ground resistance, as
applicable to all manholes, padmount switches, transformers, service entrances,
etc.
D. Ground rod mechanical connector bodies shall be manufactured from high
strength, high conductivity cast copper alloy material. Bolts, nuts, washers and
November 2003 Twin 0 Pump Station (860-3-TD) Contract 38891
Electric
16050-3
lockwashers shall be made of silicon bronze and supplied as a part of the
connector body and shall be of the two bolt type.
Split bolt connector types are not allowed.
The connectors shall meet or exceed the requirements of UL 467 and be clearly
marked with manufacturer and conductor size.
E. Ground rod compression connectors shall be manufactured from pure wrought
copper. The conductivity of this material shall be no less than 99% by IACS
standards.
The connectors shall meet or exceed the performance requirements of IEEE
837, latest revision. The connectors shall be clearly marked with the
manufacturer and conductor size.
,
The installation of the connectors shall be made with a compression, tool and die
system, as recommended by the manufacturer of the connectors. Each
connector shall be factory filled with an oxide-inhibiting compound. I
2.03 Manholes and Pull Boxes
A. Manholes and Pull-Boxes shall be of precast concrete, designed for H-20 traffic
loading. Concrete sections shall modular with tongue and groove joints. A
continuous waterproof gasket shall be provided at all section and slab joints.
Manhole and Pull-Box minimum inside dimensions shall be as shown on the
Drawings. Manholes and Pull-Boxes shall be equipped with galvanized steel
pulling irons opposite each ductbank entrance. Manholes and Pull-Boxes shall
be provided with a sump opening and one (1) one-inch ground rod opening in the
base section. Sump opening shall be provided with cast iron perforated cover.
Manhole and Pull-Boxes shall be placed on a 12" thick crushed rock base.
B. Manhole covers shall be cast iron, 30" round (minimum), designed for H-20
traffic loading, and supported on the necking section. Pull-Box covers shall be
hpt dipped galvanized, checkered plate steel suitable for H-20 traffic loading
(unless noted otherwise), and bolted down to cast-in-place hot dipped galvanized
steel frames with stainless steel hardware. Manhole and Pull-Box covers shall
be marked "High Voltage Electric", unless noted otherwise.
C. Manholes and Pull-Boxes shall be provided with cable supports as required to
support cable at %foot (minimum) intervals. Cable supports shall be fabricated
from hot dipped galvanized or fiberglass strut channel and attached to slotted
galvanized steel channel cast-in-place inserts. Provide glazed porcelain
insulators with channel clamps for support channels. Strap cable to insulators
with plastic tie wraps. All phase and ground cables in each circuit shall be kept
together and contained on/in the porcelain cable supports. No phase cable shall
be run separate from the other two phases and ground.
D. Manholes and Pull-Boxes shall be provided with knockouts for connections to all
underground conduit and ductbanks. Ductbank entrances shall be grouted flush
November 2003 Twin D Pump Station (860-3-TD) Contract 38891
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16050-4
with non-shrink grout. Ducts and conduits shall be terminated with flush-end
bells.
E. One ground rod shall be provided for each manhole and pull-box, unless
otherwise noted. Provide #4/0 bare stranded copper ground wire completely
around the inside perimeter of each manholes and pull-box and anchor to walls.
Connect the ground wire to the ground rod. Bond the bare copper ground wire
to any splice shield wires, ground wires, cable racks, cover frames, sump frames
and other metal items in the manholes. All separate ground wires accompanying
circuits shall be grounded in each manhole passed through.
F. Manholes and Pull-Boxes shall be manufactured by Brooks, Quikset, or equal.
2.04 Conduit
I A. General
Each length of conduit shall bear the UL label and be a minimum size of 3/4",
unless noted otherwise. Exposed elbows shall be standard radius sweeps '
meeting the requirements of the NEC. Buried or concealed elbows shall be long 8
radius sweeps.
B. Riaid Steel Conduit
1. Rigid steel conduit shall be Schedule 40 steel, pipe size, finished inside
and out by hotdipped galvanizing, and shall conform with ANSI C80.1'
and UL. All rigid steel conduit in direct contact with the ground or
concrete shall be protected by double wrapping with 20 mil PVC tape.
2. Couplings shall be galvanized steel.
3. Insulating Bushings: threaded malleable iron with thermoplastic liner.
4. Insulated Grounding Bushings: threaded malleable iron body with
insulated thermoplastic liner throat and "lay-in" ground lug with
compression screw.
5. Insulated Metallic Bushings: threaded malleable iron body with plastic
insulated throat.
6. Running threads are not acceptable.
C. PVC Coated Rigid Steel Conduit
1. Conduit shall be Schedule 40 steel, pipe size, finished inside and out by
hot-dipped galvanizing, and shall conform with ANSI C80.1 and UL. A
PVC coating of 40 mils (minimum) thickness shall be bonded to the outer
galvanized surface of the conduit and a urethane coating shall be applied
to the interior surface of the conduit. The bond between the PVC coating
and the conduit surface shall be greater than the tensile strength of the
November 2003 Twin D Pump Station (860-3-TD) Contract 38891 Electric
16050-5
D.
plastic. A PVC jacketed coupling shall be furnished with each length of
conduit. PVC coated rigid steel conduit and fittings shall. be
manufactured by Robroy, Occidental, or equal.
2. Conduit fittings shall be PVC coated and furnished by the same
manufacturer as the conduit to provide a complete and compatible
protective system. PVC coated fittings and couplings shall ave specially
extend beyond the fitting or coupling a distance equal to the conduit
outside diameter or two inches, whichever is greater.
i
formed sleeves to tightly seal to conduit PVC coating. Th tt sleeves shall
Riaid Non-Metallic Conduit
1. Conduit shall be UL listed, sunlight resistant, Schedule 40 polyvinyl-
chloride (PVC) conduit, rated for 90' C conductors, and manufaotured to
NEMA TC-2 standards.
2. Couplings and connectors shall be of the same manufacturer as the
conduit and shall be joined as recommended by the manufacturer. All
PVC conduits shall be terminated with approved connectors or end bells. \
E. Electrical Metallic Tubina (EMTI 'I
1. Conduit shall be formed of cold rolled strip steel, electroplated, and shall
meet ANSI and UL requirements.
2. Couplings shall be electroplated steel, UL listed rain and concrete tight.
3. Connectors shall be gland compression type with insulated plastic throat.
F. Liquid-Tiaht Flexible Metallic Conduit
1. Conduit shall be liquid tight and shall have an interlocking flexible
galvanized steel core with permanently bonded continuous exterior gray
PVC jacket. Exterior jacket shall be moisture and oil-proof, and UV
protected. A copper bonding conductor shall be included between the
segments. Interior surfaces shall be smooth and offer minimum drag to
pulling conductors. Liquid-tight flexible metallic conduit shall be as
manufactured by Anaconda, Electroflex, or equal.
2. Connectors shall be the screw clamp or screw-in (Jake) variety with cast
malleable iron bodies and threaded male hubs with insulated throats or
insulated bushings. Liquid-tight fittings shall be of cadmium plated cast
malleable iron, with insulated throat, with provisions for grounding.
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16050-6
2.05 Non-Metallic Cable Tray
A. General
Non-metallic cable tray shall be ladder-type conforming to applicable sections of
NEMA FG-1 and ASTM E-84. Non-metallic cable tray system shall be
constructed of fire-retardant polyester resin. All composite material shall be
provided with an ultra-violet light inhibiting chemical additive and meet ASTM E-
84, maximum 25 flame spread (Class l rating).
Cable tray load class shall be selected based upon the weight of specified
cables/conductors shown on the Drawings with a 25% additional weight
allowance for future cableskonductors while maintaining a minimum safety
factor of 1.5.
The non-metallic cable tray system shall be as manufactured by Enduro
Composite Systems, Inc., or equal. I
B. Construction
Unless specified otherwise, cable tray shall conforin to the following dimensional
requirements:
Nominal Width = 12" minimum
Cable Loading Depth = 4" minimum
Fitting Radius = 12" minimum
Rung Spacing = 6"
Cable tray side rail members shall turn inward. Rungs and side members shall
be connected by both mechanical and chemical (adhesive) means. All bonded
connections shall be sanded to maximize adhesion and structural integrity. The
cable tray interior shall be clear of all projections or sharp objects. All straight
sections and fittings shall be pre-drilled to accept connector plates. All cut ends
and drilled holes (factory and field) shall be sealed with resin coating.
All fittings shall be designed and installed so as to have the same load carrying
capacity as straight sections. Unless specified otherwise, all fittings shall be
concentric curved molded type, not mitered.
C. Connections, Accessories. and Su~~orts
Connector plates shall be fiberglass and designed to transfer cable tray loads to
the support system. Fasteners for connector plates shall be Type 316 stainless
steel or FRP studs and hex nuts as required.
Where specified on the Drawings, cable trays shall be provided with fiberglass
flat covers.
Cable tray support systems shall be constructed of polyester or vinyl ester resin
strut channels (single or double channel as necessary) and appurtenances.
November 2003 Twin D Pump Station (860-3-TD) Contract 38891
Electric 16050-7
'I
I
Support spacing shall be in accordance with the cable tray manufacturer's
printed recommendations for the specified loads.
Cable tray manufacturer shall provide all clamps, support assemblies, and
appurtenances necessary for the installation of a complete cable tray system.
2.06 Non-Metallic Wireway 1 I A. General
Non-metallic wireway shall be solid bottom type construction with minimum wall
thickness of 0.1875 inches. Covers and cover splice plates shall be snap-on
type construction requiring no installation fasteners.
The wireway system shall conform to the applicable sections of NEC Article 362.
The non-metallic wireway system shall be as manufactured by .Enduro
Composite Systems, Inc., or equal.
9. Construction '.
!
Wireways, covers, and connector plates shall be pultruded utilizing polyester
resin with UV light inhibiting additives and exterior nexus veil coverage.
All composite material shall meet ASTM E84, maximum 25 flame spread rating.
All cut ends and drilled holes (factory and field) shall be sealed with resin
coating.
C. Connections, Accessories, and Sup~orts
Connector plates shall be fiberglass and designed to transfer wireway loads to
the support system. Fasteners for connector plates shall be Type 316 stainless
steel or FRP studs and hex nuts as required.
Wireways shall be provided with fiberglass flat snap-onlsnap-off covers.
Wireway support systems shall be constructed of polyester or vinyl ester resin
strut channels (single or double channel as necessary) and appurtenances.
Support spacing shall be in accordance with the wireway manufacturer's printed
recommendations for the specified loads.
2.07 Conductors and Cable
A. General
Cables and wires shall be new, stranded conductors, solid copper, not smaller
than #I2 AWG (except shielded control wire) unless othetwise shown on
Drawings. Insulation shall bear manufacturer's trademark, insulation
November 2003
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16050-8
designation, voltage rating, and conductor size at regular intervals. Each type of
cable or wire shall be the product of a single manufacturer. I
B. Conductors
Conductors for power service, power feeders, power circuits,i and lighting
feeders, lighting circuits, and control circuits shall be stranded copber, rated 600
volt, with 75' C THWN insulation, UL approved, for installation underground, in
concrete, in masonry, or in wet locations. Minimum conductor size shall be # 12
AWG.
C. Shielded Cable I
Shielded cable shall consist of minimum 3 #16 AWG, stranded, tinned-copper
conductors, individually insulated with 25 mils of polyethylene and 100%
aluminum foil tape. Unless otherwise shown on the drawings, shielded cable
shall be used for all 4-20 ma signals. Cable shall be manufactured by Belden, or
equal. !
D. Color Coding !
\
System conductors shall be factory color coded by integral pigmentation with a
separate color for each phase and neutral, or by an approved colored marking
tape at all terminations and in all junction boxes, pull-boxes, and manholes.
Each voltage system shall have a color coded system that shall be mainiained
throughout the project. Approved colored marking tape is as follows:
Color -, System Service -
120V, 1 Phase, 2 wire Line Black
Neutral White
208V, 3 Phase, 4 wire Phase A Black
Phase B Red
Phase C Blue
Neutral White
480V, 3 Phase, 4 wire Phase A Brown
Phase B Orange
Phase C Yellow
Neutral White
All Ground Green & Bare Copper
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16050-9
2.08 Switches and Relays
A. Tonale Switches
Local single pole switches shall be flush tumbler type AC rated, quiet type, heavy
duty, 20 amp minimum, rated 120/277 volt, back or side wired with binding
screws. Switches shall conform to NEMA WD-1 specifications. Two pole three
way and other switches shall be similar. Switches shall be as manufactured by
Hubbell, Bryant, or equal.
6. Relays
Control relays shall be rated 12OVAC with minimum 10A contacts, unless
otherwise noted on the Drawings. All control relays and relay timers shall be DIN
rail mounted, with instantaneous reversible contacts, 8 or 11 pin base type only.
2.09 Receptacles
A. General Purpose
General purpose receptacles shall be duplex, 3-wire grounding type, rated 125 '
1250 volt, AC, 20 amp minimum, NEMA 5-20R, back or side wired with binding
screws, as manufactured by Hubbell, Bryant, G.E, or equal.
B. Ground Fault Interrupter (GFI)
GFI receptacles shall be NEMA 5-20R configured and shall mount in a standard
device box. Units shall trip at 5 milliamperes of ground current and shall comply
with NEMA WD-1-1.10 and UL 943. GFI receptacles shall be capable of
individual protection as well as downstream protection.
2.10 Device Boxes, Junction Boxes, and Fittings
A. Device Boxes (General Purpose - Indoors or Outdoors)
Unless otherwise noted on the Drawings, device boxes shall malleable iron
constructed with zinc or cadmium plating and enamel finish, minimum single
gang size, deep box type, with treaded hubs and solid gasketed cover. Device
boxes shall be properly sized for required circuitry or splicing. Surface mounted
boxes shall be furnished with mounting lugs. Where located outdoors, device
boxes shall be waterproof. Device boxes shall be Crouse-Hinds FD, Appleton
FD, or equal.
B. Junction Boxes (General Purpose - Indoors or Outdoors)
Unless otherwise noted on the Drawings, junction boxes shall be malleable iron
constructed, rain tight, dust tight, minimum size 4"x4"x3", drilled and tapped or
field installed with slip holes (alternate hub plates are acceptable). Junction
boxes shall be properly sized for the number and sizes of conductors and
conduit entering the box and required splicing. Provide feet where necessary for
November 2003 Twin D Pump Station (860-3-TD) Contract 38891
Electric 16050-1 0
surface mounting. Junction boxes shall be Crouse-Hinds WAB, Appleton RS, or
equal.
C. Device Boxes (Wet or Corrosive Locations)
Where specified on the Drawings, device boxes shall be constructed of 316
stainless steel, minimum single gang size, deep box type, with gasket and 316
stainless steel solid cover. Device boxes shall be properly sized for required
circuitry or splicing. Surface mounted boxes shall be furnished with mounting
lugs or feet. Device boxes shall be NEMA 4X as manufactured by BEL
Products, Inc., Cushing Manufacturing Co., or equal.
Junction Boxes (Wet or Corrosive Locations) D.
Where specified on the Drawings, junction boxes shall be constructed of 316
stainless steel, with gasket and 316 stainless steel solid cover. Junction box
minimum size shall be 4"x4"x3". Junction boxes shall be properly sized for
required circuitry or splicing. Provide feet where necessary for surface mounting.
Junction boxes shall be NEMA 4X as manufactured by BEL Products, Inc.,
Cushing Manufacturing Co., or equal.
i '
E. Fittinas
Conduit fittings shall be provided where shown on the Drawings or required to
facilitate installation of the electrical conduit and equipment.
1. Metallic fittings shall be constructed of malleable iron with zinc or
cadmium plating and enamel finish, with gasket and cast cover. Fittings
shall be Condulet Type as manufactured by Crouse-Hinds, Appleton, or
equal.
2. Non-metallic fittings shall be compatible with the non-metallic conduit
used and shall be of the same manufacturer.
3. Fittings shall be of the shapes, sizes, and types required to facilitate
installation or removal or conductors and cables from the conduit, cable
tray, and wireway systems.
4. Connectors, couplings, locknuts, bushings, and caps used with Rigid
Steel conduit shall be threaded and thoroughly galvanized. Bushings
shall be insulated.
5. Metallic conduit unions shall be "Erickson" couplings, or approved equal.
Running threads are not acceptable.
6. . Connectors for liquid-tight flexible metallic conduit shall be liquid tight with
insulating bushings and provision for ground continuity.
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16050-1 1
2.1 1 Disconnect Switches
A. Switch Interior i
Dead-front construction with hinged arc suppressor and switch blades which are
fully visible in the "OFF" position and with door open.
\
B. Switch Mechanism I
Switches shall be quick-make and quick-break with arc quenching and ambient
temperature compensated overload devices. Switch operating handle and
mechanism shall be provided with a dual cover interlock to prevent unauthorized
opening of the switch door in the "ON" position or closing the switch mechanism
while the door is open. Switch operating handle shall be capable of being
padlocked in the "OFF" position. Switches shall be manufactured by ,General
Electric, Westinghouse, Square D, or equal.
C. Ratinqs
Switches shall be horsepower rated for the operating voltage and with fubed or
non-fused arrangements as shown on the Drawings. I
'\
D. Enclosures
Unless otherwise noted on the Drawings, for interior locations enclosures shall
be NEMA 12 panels with hinged covers and padlockable hasps. Switches in
exterior locations shall be provided with gasketed NEMA 3R enclosures with
hinged covers and padlockable hasps. ,
2.12 Low-Voltage Cable Splices
Low-voltage cable splices and terminations shall be rated at not less than (io0 Volts.
Splices in conductors No. 10 AWG and smaller shall be made with an insulated,
solderless, pressure type connector, conforming to the applicable requirements of UL
486A. Splices in conductors No. 8 AWG and larger shall be made with noninsulated,
solderless, pressure type connector, conforming to the applicable requirements of UL
486A and UL 4868. Splices shall then be covered with an insulation and jacket material
equivalent to the conductor insulation and jacket. Splices below grade or in wet locations
shall be sealed type conforming to ANSI Cll9.1 or shall be waterproofed by a sealant-
filled, thick wall, heat shrinkable, thermosetting tubing or by pouring a thermosetting
resin into a mold that surrounds the joined conductors.
2.13 Miscellaneous Equipment and Material
A. Concrete Anchors
Type 304 (or better) stainless steel expansion anchors (wedge or sleeve) shall
be used to for mounting all electrical conduit, boxes, and equipment. NO type of
explosive anchor will be permitted.
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16050-1 2
D. Conduit Straps
Where specified on the Drawings, conduit straps shall be malledble iron
constructed, one-hold type strap with cast clam-backs and spacers as required.
E. Channel (Unistrutl SURDO~~S
H. Conductor and Terminal Markers
Unless otherwise specified, support channel (Unistrut) shall be single strut type,
1-112" x 1-1/2", 12 gauge hot dipped galvanized steel with 17/32" diameter bolt
holes on 1 -1/2" centers.
F. Nameplates I
Nameplates shall be provided for all electrical panels, enclosures, stations, and
equipment furnished by the Contractor. Nameplates shall be engraved
laminated plastic, with 1/4" high white lettering on black background.
Nameplates shall indicate equipment and its function. Nameplates shall be
securely fastened with stainless steel drive screws or escutcheon pins. : !
G. Panelboard Labeling !
\
Panelboard circuits shall be labeled clearly indicating which piece of equipment,
outlet, lighting, receptacle, etc. is powered by the respective circuit. Labeling
shall be arranged in numerical order. a. ,
Conductor and terminal markers shall be self-adhering, pre-printed cloth or vinyl.
PART 3 - EXECUTION
3.01 General
A. Prefabricated Material and Equipment
Installation of all prefabricated items and equipment shall conform to the
requirements of the manufacturer's specifications and installation instructions.
When code requirements apply to installation of materials and equipment, the
more stringent requirements, code, or manufacturer's specifications and
installation instructions shall govern the work.
B. Power Supplies to Mechanical Eauipment
1. An electric power supply, including conduit, any necessary junction or
outlet boxes, and conductors and connections shall be furnished and
installed by Contractor for each item of mechanical equipment.
2. Circuit breakers or fused disconnect protection shall be provided for each
separate item of mechanical equipment shown on the Drawings, or
specified in the Basic or Technical Specifications.
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16050-1 3
3.02
3. Power supplies to individual items of equipment shall be terminated in a
suitable outlet or junction box adjacent to the respective item of
equipment, or a junction box provided by the manufacturer of the
equipment. Sufficient lengths of conductor at each location shall be
provided to permit connection to equipment without damaging the
conductors.
Conduit Installation
A. General
1. Contractor shall install conduit and electrical equipment in locations that
will cause minimal interference with the maintenance and removal of
mechanical equipment. Conduits and connections are shown
schematically on the Drawings. Contractor shall run conduit in a neat
manner parallel or perpendicular to walls and slabs, and wherever
possible, installed together in parallel runs supported with Unistrut type
support system. All conduits shall be installed straight and true with
reference to the adjacent work.
2. Unless noted otherwise on the Drawings, conduits shall be concealed in
walls or in cast-in-place concrete slabs. Concealed conduits shall be run
in as direct a route as possible and with bends of large radii. Floor
penetrations shall be made only at specific approved locations; other
penetrations are prohibited. Conduits shall be rigidly secured in position
by means of approved clamps. 0
3. Locations of conduit runs shall be planned in advance of the installation
and coordinated with the ductwork, plumbing, ceiling, and wall
construction in the same areas, and shall not unnecessarily cross other
conduits or pipe, nor prevent removal of nor block access to mechanical
or electrical equipment.
4. Unless noted otherwise on the Drawings, buried conduit shall be installed
with a minimum of 24" cover. All conduit trenches shall be compacted to
a minimum of 90% relative compaction. Compaction in the pipe zone
shall be accomplished by water jetting imported sand, one sack sand
slurry cement, or equal, placed to 6" above top of conduit. Buried conduit
shall be installed using approved spacers and cradles, properly
supported/anchored and at sufficient intervals to prevent movement
during backfill operations (maximum spacing of five feet). Where change
in direction is required, long radius elbows shall be installed. Prior to
installation of conductors in underground conduits, a testing mandrel not
less than six (6) inches long and with a diameter 1/4 inch less than the
conduit diameter shall be drawn through after which a stiff bristle brush of
the proper size for the conduits shall be drawn through until the conduits
are free of all sand and gravel.
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16050-1 4
B.
C.
D.
E.
5.
6.
7.
8.
9.
10.
Unless noted otherwise on the Drawings, conduits cast in, under, or
through concrete walls, slabs, or masonry walls shall be Rigid Steel.
Unless noted otherwise on the Drawings, buried conduit shall be Rigid
Non-Metallic or Rigid Steel. Transition from PVC to Rigid Steel shall be
made at the horizontal leg of the buried conduit bend.
Unless noted otherwise on the Drawings, exposed or above grade
conduit shall be Rigid Steel.
Spare conduits shall extend a minimum of 3" above concrete slab or wall,
and be provided with threaded cap and polyethylene pull rope with 100-
pound (minimum) tensile strength.
All conduits shall be tightly sealed during construction by use of conduit
plugs or "pennies" set under bushings. All conduit in which moisture or
any foreign matter has collected before pulling conductors shall be
cleaned and dried to the satisfaction of the Owner.
Conduits shall be securely fastened to cabinets, boxes, and gutters using 1
locknuts (one inside and one outside enclosure for rigid conduit, one
inside enclosure for EMT) and an insulating bushing or specified
insulated connectors. Grounding bushings or bonding jumpers shall be
installed on all conduits terminating at concentric knockouts.
'J
Riaid Steel Conduit
Rigid Steel conduit installations below grade, and cast in, under, or through walls or slabs shall be double wrapped with 20-mil PVC tape. Running threads and
threadless couplings will not be acceptable. Where necessary for connecting
conduit, UL listed couplings or unions shall be used. All ends and joints shall be
reamed smooth after cutting.
Electrical Metallic Tubincl (EMT)
EMT conduit shall only be installed where specifically shown on the Drawings.
EMT conduit, where specified, shall be furnished with weatherproof fittings.
Liauid-Ticlht Flexible Metallic Conduit
Liquid-tight flexible conduit shall be installed in all locations for connections to
equipment, including, but not limited to: motors, HVAC equipment, automatic
valves, and similar devices.
Rigid Non-Metallic Conduit
Unless noted otherwise on the Drawings, Schedule 40 PVC conduit may be used
underground. PVC conduits shall not be run exposed.
November 2003
Twin D Pump Station (860-3-TD) Contract 38891
Electric
16050-1 5
F. SUDPOrtS
3.02
1. All raceway systems shall be secured to building structurbs using
specified fasteners, clamps, Unistrut, and hangers spaced according to
NEC requirements.
2. Exposed conduit shall be supported with channel supporks spaced per
NEC requirements (8'-0" maximum spacing) and within 18" of couplings,
bends, boxes, etc., unless otherwise shown on the Drawings.
3. Multiple conduit runs shall be supported using "trapeze" hangers,
consisting of approved channels suspended on steel rods from ceiling
inserts located not more than eight (8) feet apart. Sizes of channels and
rods shall be selected as recommended by the manufacturer for span
and loading conditions.
G. Termination and Joints
1. Raceways shall be joined using specified couplings or trahsition
couplings where dissimilar raceway systems are joined. I
'I
2. Conduit terminations exposed at weatherproof enclosures and cast outlet
boxes shall be made watertight using approved connectors and hubs.
Expansion couplings shall be installed where any conduit crosses a
building separation or expansion joint, including joints in footings and
gradebeams.
3.
!
4. Approved cable-sealing bushings shall be installed on all conduits
originating from roof and terminating in switchgear, cabinets, or gutters
inside the building.
5. Conduit bodies (Condulets) are not acceptable as enclosures for splices.
6. At all conduit terminations and boxes, conductors shall be protected' by a
fitting equipped with a plastic bushing having a smoothly rounded
insulating surface.
Conductor and Cable Installation
A. General
1. Conductors shall not be installed in conduit runs until all work is
completed for each individual conduit run. Care shall be taken in pulling
conductors such that insulation is not damaged. UL approved pulling
compounds shall be used.
2. Unless noted otherwise on the Drawings, all conductors or cables shall
be installed in conduit or electrical enclosures.
November 2003
Twin D Pump Station (860-3-TD) Contract 38891
Electric
16050-1 6
I
3. All cables shall be installed and tested in accordance with manufacturer's requirements and warranty. i
B. Splicina and Terminatinq
\
1. All aspects of splicing and terminating shall be in accordah- with cable
manufacturers published procedures.
All splices in outlet boxes with connectors as specified herein shall be
made up with separate tails of correct color. At least six (6) inches of tails
packed in box after splice is made up shall be provided.
2.
3. All conductor and cable in panels, control centers and equipment
enclosures shall be bundled and clamped.
. C. Identification
1.
2.
All branch-circuits shall be securely tagged, noting the purpose of ebch.
All conductors and conduit shall be numbered and labeled with vinyl
wrap-around markers. Where more than two conductors run through a
single outlet, each circuit shall be marked with the corresponding circuit
number at the panelboard.
Conductors size #6 AWG and larger shall be color coded using specified
phase color markers and identification tags.
All terminal strips shall have each individual terminal identified with
specified vinyl markers.
\
3.
-1
4.
5. Inside of all junction box cover plates shall be identified via felt-tip pen or
decal label, denoting the panel and circuit numbers and voltage
contained in the box.
6. All receptacles and switches shall be decal labeled on the plate, denoting
the panel and circuit number.
D. Connections to Circuit Breakers, Switches, and Terminal Strips:. Stranded
Comer Conductors
1. #I2 through 8 AWG: Conductor shall be terminated in locking tongue
style, pressure type, compression lugs, unless clamp type connection for
stranded conductor is provided with device.
2. #6 AWG and larger: Conductor shall be terminated in one-hole flat-
tongue style, compression type lugs, or by connectors supplied by the
manufacturer.
November 2003 Twin D Pump Station (860-3-TO) Contract 38891
Electric
16050-1 7
E.
F.
G.
H.
3.03
Joints in Conductors in Dry Locations, Comer Conductors
1. ##8 AWG and smaller: Conductors shall be twisted and secured with cap
or twist-on, expandable spring type solderless connectors.
2. ##6 AWG and larger: Conductor shall be joined with split bolt connectors
or compression sleeves. Joints shall be insulated with rubber tape and
protected with half-lapped layers of vinyl plastic electrical tape. Insulation
may also be provided by UL listed pre-manufactured components such
as heat-shrink or cold-shrink devices.
Joints in Conductors in Moist Locations, Cocmer Conductors
1.
2.
#8 AWG and smaller: Conductor shall be securely joined as specified
above, then encapsulated in epoxy (Scotchcast or approved equal).
#6 AWG and larger shall be joined as specified above, and suitably water
treated.
Groundinq
Enclosures of equipment, raceways and fixtures shall be permanently and
effectively grounded. A code-sized, copper, insulated green equipment ground
shall be provided for all branch circuit and feeder runs. Equipment ground shall
originate at panelboard ground bus and shall be bonded to all switch and
receptacle boxes and electrical equipment enclosures. Ground terminals on
receptacles shall be connected to the equipment grounding conductor by an
insulated copper conductor.
Sianal Wirinq
Conductor used for alarm and control signal applications shall be identified at
both ends and referenced to appropriate as-built drawings. Control wiring shall
be numerically or otherwise coded in accordance with as-built control diagrams
Installation of Boxes and Wiring Devices
A General
1. All outlets shall be surface mounted with walls, ceilings, and floors,
except where specified to be finish flush.
2. No unused openings shall be left in any box. Close-up plugs shall be
installed as required to seal openings.
3. Exposed outlet boxes and boxes in damp and wet locations shall be
provided with gasketed cast metal cover plates.
November 2003
Twin D Pump Station (860-3-TD) Contract 38891
Electric
16050-1 8
B. BoxLavout
1. Outlet boxes shall be installed at the locations and elevations shown on
the drawings or specified herein. Adjustments to locations shall be made
as required by structural conditions and to suit coordination requirements
of other trades.
3.04 Transformer Installation
A. Primary shall be connected to minimum value taps during construction period
and prior to initial building start-up.
B. Voltage readings shall be made and tap connections adjusted to nominal voltage
during final construction review and prior to building occupancy.
'J C. Transformers shall be installed on vibration pads designed to suppress the
transformer vibrations. Pads shall be selected and arranged in accordance with
the weights of the transformers.
Conduit connections that will prevent transmission of the transformer vibrations
to the conduit system shall be installed. D.
E. Transformers installed against a wall shall have readily accessible primary and
secondary terminals.
3.05 Protection
Conduits, junction boxes, outlet boxes, and other openings shall be kept closed to
prevent entry of foreign matter. Fixtures, equipment, and apparatus shall be covered
and protected against dirt, paint, water, chemical or mechanical damage, before and
during the construction period. Damaged fixtures, apparatus, or equipment shall be
restored to original condition prior to final acceptance, including restoration of damaged
shop coats of paint. Brightly finished surfaces and similar items shall be protected until
in service. No rust or damage will be permitted.
3.06 Workmanship
A. Preparation, handling, and installation shall be in accordance with manufacturer's
written instructions and technical data particular to the product specified and/or
approved, except as otherwise specified.
Work shall be furnished and placed in coordination and cooperation with other
trades.
B.
C. Work shall conform to the National Electrical Contractor's Association Standard
of Installation for general installation practice.
November 2003 Twin D Pump Station (860-3-TD)
END OF SECTION
Contract 38891
Electric
16050-1 9
SECTION 16400
DISTRIBUTION SWITCHBOARDS AND MOTOR CONTROL CENTERS
TECHNICAL SPECIFICATIONS e
PART 1 - GENERAL
1.01 scope
The Contractor shall furnish and install the free standing dead front type low voltage
(600 volt) distribution switchboards, motor control centers, and utility service equipment,
as specified herein and shown on the Drawings.
1.02 Quality
A. The low-voltage distribution switchboard assembly and all components shall be
designed, manufactured, and tested in accordance with standards of NEMA PB-
2 and UL Standard 891.
6. The Motor Control Centers (MCC) and all components shall be designed, '
manufactured and tested in accordance with standards of NEMA, ANSI, and UL
845.
C., For the equipment specified herein, the manufacturer shall be IS0 9000, 9001 or
9002 certified.
D. The manufacturer of this equipment shall have produced similar electrical
equipment for a minimum period of five (5) years. When requested by the
Owner, an acceptable list of installations with similar equipment shall be provided
demonstrating compliance with this requirement.
E. Manufacturer shall be Cutler-HarnmerNVestinghouse, Allen-Bradley, Square D,
or equal.
1.03 Submittals
All submittals shall be in accordance with the General Provisions, Section 2-5.3.
A. ShoD Drawinqs
Contractor shall submit complete information, drawings, and technical data for all
equipment and components, including, but not limited to, the following:
1. Drawings showing elevations, floor plan, top view, anchorage and conduit
entry/exit locations.
2. Single line and unit wiring diagrams depicting internal and remote
devices.
3. Nameplate schedule.
4. Starter and component schedule.
November 2003
Twin D Pump Station (860-3-TD) Contract 38891
Distribution Switchboard
16400-1
1.04
1.05
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
i
Assembly ratings including:
a. Short circuit rating.
b. Voltage.
C. Continuous current.
Major component ratings including:
a. Voltage.
b. Continuous current.
C. Interrupting ratings.
Cable terminal sizes.
Busway connection.
Connection details between close-coupled assemblies.
Composite floor plan of close-coupled assemblies.
Key interlock scheme drawing and sequence of operations.
Descriptive bulletins.
Product sheets. I
Lateral design and equipment anchorage details, prepared and stamped
by a licensed engineer, registered in the State of California.
Installation information prior to shipment.
i
I
B. The following information shall be submitted for record purposes prior to broject completion. \
‘I
1.
2. Certified production test reports.
Operation and maintenance manuals shall include the following information:
Final as built drawings and wiring diagrams.
C.
1. Instruction books and/or leaflets.
2. Drawings and information required by above. ,
3. Renewal Parts list showing the important maintenance items which will
need to be available for proper maintenance and to provide normal
equipment life.
Delivery, Storage, and Handling
Equipment shall be handled and stored in accordance with manufacturer‘s written
instructions. One (I) copy of these instructions shall be included with the equipment at
time of shipment. Where stored out of doors, space heaters and thermostat controls
shall be energized.
Measurements
Contractor shall verify equipment proposed shall fit into the available space, coordinate
installation and notify the Owner of any interferences or conflicts in the distribution and
MCC system power and control wiring.
November 2003
Twin D Pump Station (860-3-TD) Contract 38891
Distribution Switchboard
16400-2
PART 2 - PRODUCTS
2.01 Ratings 'i
A. The distribution switchboard(s) and MCC's shall be rated to withstand
mechanical forces exerted during short circuit conditions wh' n connected
amperes symmetrical at rated voltage unless shown otherwise on the Drawings.
Voltage rating shall be 600 volts, unless indicated otherwise on the Drawings.
directly to a power source having minimum available fault curr t nt of 65,000
B. The MCC(s) shall be 600 volt class, suitable for operation on a three-phase, 60-
Hertz system. The system operating voltage and number of conductors shall be
as indicated on the Drawings. I
I
2.02 Distribution Switchboard Construction
A. Distribution switchboard(s) shall be as manufactured by Cutler-
HammerNVestinghouse, Allen-Bradley, Square D, or equal.
Switchboard shall consist of the required number of vertical sections bolted
together to form a rigid assembly. The sides and rear shall be covered with
removable bolt-on covers. All edges of front covers or hinged front panels shall
be formed. Provide adequate ventilation within the enclosure.
All sections of the switchboard shall align front and rear with depth as shown on
the drawings. All protective devices shall be compartmentalized with line and
load bus connections. Devices shall be front removable and load connections
rear accessible. Insulated rigid copper bus connections shall extend from the
load side of overcurrent feeder devices into rear compartment where outgoing
cable connections may be made without reaching into or near the main
horizontal or vertical busses. Distribution sections shall be sectionalized to
provide a front device section, an intermediate bus section and a rear feeder
cable section. There shall be a vertical barrier of glass polyester between the
device compartment and the bus compartment.
!
B.
C.
D. The assembly shall be provided with adequate lifting means.
E. The switchboard shall be suitable for use as service entrance equipment and be
labeled in accordance with UL requirements.
F. Pruvide a rear compartment vertical insulating barrier between the cable
compartment and the main bus to protect against inadvertent contact with main
or vertical bus bars.
2.03 Distribution Switchboard Bus
A. All bus bars shall be silver plated copper. Main horizontal bus bars shall be
mounted with all three phases arranged in the same vertical plane. Bus sizing
shall be based on NEMA standard temperature rise criteria of 65 degrees C over
November 2003
Twin D Pump Station (860-3-TD) Contract 38891
Distribution Switchboard
16400-3
a 40 degrees C ambient temperature outside the enciosure. Minimum bus rating
shall be as specified on the Drawings.
6.. A copper ground bus (minimum 1/4 x 2 inch) shall be furnished firmly secured to
each vertical section structure and shall extend the entire length of the
switchboard.
C. All hardware used on conductors shall be high-tensile strength and zinc plated.
All bus joints shall be provided with conical spring type washers.
2.04 Distribution Switchboard Wiringnerminations
A. Small wiring, necessary fuse blocks and terminal blocks within the switchboard
shall be furnished as required. Control components mounted within the
assembly, such as fuse blocks, relays, pushbuttons, switches, etc., shall be
suitably marked for identification corresponding to appropriate designations on
manufacturer's wiring diagrams.
suitable for copper or aluminum cable rated for 75 degrees C of the size as
indicated on the Drawings.
B. Mechanical type terminals shall be provided for all line and load terminations , J
C. Lugs shall be provided in the incoming line section for connection of the main
grounding conductor. Additional lugs for connection of other grounding
conductors shall be provided as indicated on the Drawings.
0. All control wire shall be type SIS, bundled and secured with nylon ties. Insulated
locking spade terminals shall be provided for all control connections, except
where saddle type terminals are provided integral to a device. All current
transformer secondary leads shall first be connected to conveniently accessible
short circuit terminal blocks before connecting to any other device. All groups of
control wires leaving the switchboard shall be provided with terminal blocks with
suitable numbering strips. Provide wire markers at each end of all control wiring.
2.05 Molded Case Circuit Breakers
A. Molded case circuit breakers shall provide circuit overcurrent protection with
inverse time and instantaneous tripping characteristics. Ground fault protection
shall be provided where shown on the Drawings and as specified herein.
B. Circuit breakers shall be operated by a toggle-type handle and shall have a
quick-make, quick-break over-center switching mechanism that is mechanically
trip-free. Automatic tripping of the breaker shall be clearly indicated by the
handle position. Contacts shall be nonwelding silver alloy, and arc extinction
shall be accomplished by means of DE-ION arc chutes. A push-to-trip button on
the front of the circuit breaker shall provide a local manual means to exercise the
trip mechanism.
November 2003
Twin D Pump Station (860-3-TD) Contract 38891
Distribution Switchboard
16400-4
C. Circuit breakers shall have a minimum symmetrical interrupting capacity
matching the distribution switch board or MCC where installed or as shown on
the Drawings.
D. Circuit breakers, 400 ampere frame and below, shall be provided with thermal-
magnetic trip units and inverse time-current characteristics unless otherwise
shown on the Drawings.
E. Circuit breakers, 600 ampere through 2500 ampere frame and circuit breakers
used as main to disconnect utility power, shall be provided with microprocessor-
based RMS sensing trip units.
1. Each molded case circuit breaker microprocessor-based tripping system '
shall consist of three current sensors, a trip unit, and a flux-transfer shunt
trip. The trip unit shall use microprocessor-based technology to provide
the adjustable time-current protection functions. True RMS sensing
circuit protection shall be achieved by analyzing the secondary current
signals received from the circuit breaker current sensors and initiating trip
signals to the circuit breaker trip actuators when predetermined trip levels
and time delay settings are reached.
J '
2. Interchangeable rating plugs shall establish the continuous trip ratings of
each circuit breaker. Rating plugs shall be fixed or adjustable as
indicated. Rating plugs shall be interlocked so they are not '
interchangeable between frames, and interlocked such that a breaker
cannot be closed and latched with the rating plug removed.
3. The microprocessor-based trip unit shall have thermal memory capabilities to prevent the breaker from being reset following an overload
condition until after a preset time delay.
4. When the adjustable instantaneous setting is omitted, the trip unit shall
be provided with an instantaneous override. Internal ground fault
protection adjustable pick-up ratings shall not exceed 1200 amperes.
Provide neutral ground fault current sensor for four wire loads.
5. Breakers shall have built-in test points for testing the long time delay,
instantaneous, and ground fault functions of the breaker by means of a
120-volt operated test set. Provide one test set capable of testing all
breakers 400 ampere frame and above.
6. System coordination shall be provided by the following microprocessor-
based time-current curve shaping adjustments:
Adjustable long time pick-up and delay
Adjustable short time pick-up and delay, with
Adjustable instantaneous pick-up
Adjustable ground fault pick-up and delay, with
selective curve shaping
selective curve shaping
November 2003
Twin D Pump Station (860-3-TD) Contract 38891
Distribution Switchboard
9 WOO-5
F. Where shown, provide circuit breakers UL listed for application at 100% of their
continuous ampere rating in their intended enclosure.
Drawings.
i
G. Provide shunt trips, bell alarms, and auxiliary switches as shown on the
2.06 Bolted Pressure Switches I
A.
B.
C.
D.
E.
F.
G.
Where shown on the Drawings, fusible bolted pressure switches protective
devices shall be bolted pressure contact type and shall be UL listed.
Switches shall be furnished with Class L fuse clips. Switch contact interrupting
capacity shall be 12 times the continuous rating of the switch.
Fuse access door shall be mechanically interlocked with the operating handle
and shall have provisions for padlocking the switch in the open position.
I
,
The switch shall utilize a stored energy dead front operating mecqanism
compressed and released by the operating handle, to provide quick pbsitive
switching action independent of the speed of the operating handle. I
\
Switches shall electrically tripped unless shown otherwise on the Drawings.
Electrically tripped switches shall be designed to be closed only after the opening
spring has been charged, ready for electrical opening by solenoid or manual
opening by the mechanical push-button.
Supply electrically tripped switch(es) with the following accessories where
indicated on the Drawings: I
1. Ground fault protection including Test Panel.
2. Single phase protection to open the switch(es) upon loss of any phase
from the source.
3. Blown Fuse Protection to open the switch upon blowing of one or more of
the fuses.
Provide Class L fuses as shown on the Drawings.
2.07 Quick-MakelQuick-Break Fusible Switches
A. Protective devices shall be quick-make/quick-break fusible switches as
manufactured by Cutler-HammerNVestinghouse, Allen-Bradley, Square D, or
equal. Fusible switches, 100 amperes through 600 amperes frames, shall be
furnished with rejection Class "R or IT' type fuse clips unless otherwise
specified. Fusible switches, 800 amperes through 1200 amperes, shall be
furnished with Class L fuse clips. Switches shall incorporate safety cover
interlocks to prevent opening the cover with the switch in the "ON" position or
prevent placing the switch in the "ON" position with the cover open. Provide
November 2003 Twin D Pump Station (860-3-TD) Contract 38891
Distribution Switchboard
16400-6
defeater for authorized personnel. Handles shall have provisions for padlocking
and shall clearly indicate the "ON" or "OFF" position. Front cover doors shall be
padlockable in the closed position. I
B. The 400 through 1200 ampere switches shall be designed to accommodate UL
listed shunt trip. Where shown on the Drawings, furnish ithe following
accessories: I
1. UL listed 120 volt AC shunt trip.
2. Zero sequence ground protection system including test panel. Ground
fault relay shall include separate time and current pick-up adjustments. I
2.08 MCC Construction I
A.
B.
C.
D.
E.
F.
MCC(s) shall be as manufactured by Cutler-HammerMlestinghouse,. Allen-
Bradley, Square D, or equal. Wiring shall be NEMA Class 11, Type B.
Structures shall be totally enclosed deadfront, free-standing assemblies. They
shall be 90k.inches high and 21* inches deep. Each structure shall be mirlimum
20k inches wide and wider where shown on the Drawings, or where requilted to
house components shown on the Drawings. Structures shall contain a horizontal
wireway at the top, isolated from the horizontal bus and shall be readily
accessible through a hinged cover. Adequate space for conduit and wiring to
enter the top or bottom shall be provided without structural interference.
Compartments for mounting control units shall be incrementally avanged such
that not more than twelve Size 1 starters can be mounted within each vertical
structure. Guide rails shall be provided.
A vertical wireway with minimum of 35 square inches of cross sectional area
shall be adjacent to each vertical unit and shall be covered by a hinged door.
Wireways shall contain steel rod cable supports.
All full voltage starter units through NEMA Size 5 shall be of the drawout €ype.
Drawout provisions shall include a positive guide rail system and stab shrouds to
absolutely ensure alignment of stabs with the vertical bus. Drawout units shall
have a tin-plated stab assembly for connection to the vertical bus. No wiring to
these stabs shall extend into the bus compartment. Interior of all units shall be
painted white for increased visibility. Units shall be equipped with side-mounted,
positive latch pull-apart type control terminal blocks rated 600 volts. Knockouts
shall be provided for the addition of future terminal blocks. In addition, a master
terminal block, when Type C wiring is specified, shall be drawout and shall be
located in the bottom wireway, readily accessible through a hinged cover. All
internal control wire to be 14 gauge minimum.
All drawout units shall be secured by a spring-loaded quarter turn indicating type
fastening device located at the top front of the unit. Each unit compartment shall
be provided with an individual front door.
November 2003
Twin D Pump Station (860-3-TD) Contract 38891
Distribution Switchboard
16400-7
G. An operating mechanism shall be mounted on the ,primary disconnect of each
starter unit. It shall be mechanically interlocked with the unit door to prevent
access unless the disconnect is in the OFF position. A defeater shall be
provided to bypass this interlock. With the door open, an interlock shall be
provided to prevent inadvertent closing of the disconnect. A second interlock
shall be provided to prevent removal or re-insertion of the unit while in the ON
position. Padlocking facilities shall be provided to positively lock the disconnect
in the OFF position with from one to three padlocks with the door open or closed. in addition, means shall be provided to padlock the unit in a partially withdrawn
position with the stabs free of the vertical bus.
2.09 MCCBus
A. Each structure shall contain a main horizontal copper tin plated or copper silver
plated bus, with minimum ampacity rating of 600 amperes or as shown on the
Drawings. 1200 amp horizontal bus shall be provided for meter and distribution
panel. The horizontal bus shall be rated at 50 degrees C temperature rise over a
40 degree C ambient temperature in compliance with UL standards. Vertical busses feeding unit compartments shall be copper and shall be securely bolted
to the horizontal main bus. All joints shall be front accessible for ease of '
maintenance. The vertical bus shall have a minimum rating of 300 amperes for I
front mounted units. 600 amp vertical bus shall be provided for meter and
distribution panel.
0 B. Isolation of the vertical bus compartment from the unit compartment shall be by
means of a full height insulating barrier. This barrier shall be a single sheet of
glass reinforced polyester with cutouts to allow the unit stabs to engage' the
vertical bus. Provide snap-in covers for all unused openings.
C. Busses shall be braced for minimum 65,000 amperes RMS symmetrical unless
shown othewise on the Drawings.
2.1 0 MCC Motor Controllers (Combination Starters)
Motor controllers shall consist of combination starter units with motor circuit protectors,
molded case circuit breakers, or fusible switches and motor starters- with thermal
bimetallic overload relays, or current sensor type with microprocessor control.
Specific type of short circuit protection, line starter, and auxiliary equipment shall be as
specified herein and shown on the Drawings.
Combination starter units shall be of the type shown on the Drawings and shall be full
voltage non-reversing, rated minimum 65,000 amperes RMS, symmetrical at 480 V
unless shown otherwise on the Drawings.
A. Motor Circuit Protectors shall be as manufactured by Cutler-
HammerNVestinghouse, Allen Bradley, Square D, or equal.
The motor circuit protection shall provide adjustable magnetic protection and be
provided with pin insert to stop magnetic adjustment at 1300% motor nameplate
November 2003 Twin D Pump Station (860-3-TD) Contract 38891
Distribution Switchboard
16400-8
November 2003
Twin D Pump Station (860-3-TD) Contract 38891
full load current to comply with NEC requirements. All combination starter units
shall have a "tripped" position on the unit disconnect and a push-to-test button
on the motor circuit protector. Motor circuit protectors shall include transient
override feature for motor inrush current.
B. Fusible Switches
Fusible switches shall be quick-make, quick-break, with Class R type fuse clips
and dual element time delay fuses.
C. Molded Case Circuit Breakers
Molded case circuit breakers shall be thermal magnetic type per Section 2.05
herein, and shall only be provided where specifically specified on the Drawings.
D. Motor starters shall be electrically operated, electrically held, three-pole
assemblies with arc extinguishing characteristics and shall have silver-to-silver
renewable contacts. They shall have provisions for a total of eight NO or eight
NC auxiliary contacts. The overload protection shall consist of the following types
as specified on the Drawings:
1)
j '
Motor starter with integral current sensor and overload device
Overload protection shall consist of one current sensor located in each
phase monitored by a microprocessor that yields a time current curve
closely paralleling that of motor heating damage boundary, accurate to
2%. Running overload protection shall be DIP switch selectable for the
specific motor full load amperes within the starter range. Provide DIP
switch selectable overload trip class of 10, 20, and 30. Line starters shall
be Cutler-HammerNVestinghouse "Advantage", Square D "Motor Logic",
Allen Bradley "SMC", or equal, and shall provide the following features:
Motor starters shall monitor current in each phase to provide phase loss
and phase unbalance protection, such that if the unbalance on any of two
phases is greater than 30% of the DIP switch selected trip rating, a phase
losshnbalance trip occurs. Provide phase losshnbalance protection
which requires no time delay for reset.
Motor starters shall provide Class II ground fault protection. Ground fault
protection shall be set at 20% of maximum continuous ampere rating and
have a start delay of 20 seconds, and a run delay of 1 second to prevent
nuisance trip on starting.
Microprocessor shall measure control circuit voltage and prevent closing
of the coil on low voltage (78 volts AC) and/or high voltage (135 volts AC)
conditions which are outside of the coil ratings.
Microprocessor shall apply voltage to the coil such that a guaranteed
maximum of 2 milliseconds of main contact bounce occurs on contactor
closure.
Distribution Switchboard
16400-9
2.1 1
Microprocessor shall continuously measure coil circuit voltage .and
current so as to maintain constant coil power at a level to maintain main
contact closure and minimize coil power consumption. i
Provide a Metering Module for each starter capable of displaying cause
of trip, current at time of trip, and current in each phase.
device.
Overload protection shall consist of a solid state electronic overload relay
suitable to measure current, current versus time, and unbalanced phase
current with current transformers as required. Number of windings and
calculations for setting shall be submitted to Owner by the Contractor.
1
2) Motor starters with separate electronic current sensor and overload
3) Motor starters with thermal bimetallic overload relay.
Overload protection shall consist of thermal bimetallic ambient
compensated type overloads. Sizes shall be determined by the
Contractor based on characteristics of actual motor furnished. I
\
E. Each starter (unless otherwise shown) shall be equipped with indicating lights,
selector switches, elapsed time meter, and auxiliary contacts, as shown on the
Drawings. Number of auxiliary contacts shall be as required for specific motor
control. In addition, 2NO and 1 NC spare contacts shall be provided.
Power Meter, Monitor, and Protection Device
A.
-,
Where indicated on the Drawings, provide a digital line Meter, Monitor, and
Protection (MM&P) device, having the features and functions specified below.
The MM&P shall consist of a single microprocessor-based unit capable of
monitoring and displaying the functions listed below with the accuracy indicated; the MM&P shall auto range between Units, Kilo-units, and Mega-units. The MM&P shall provide the adjustable protection functions indicated and the capability to communicate data via twisted pair network. The MM&P shall be UL
recognized, CSA certified, and also meet ANSI Standard C37.90. The MM&P
shall be as manufactured by Cutler-HammerNVestinghouse, Allen-Bradley,
Square D, or equal.
Metered Values
(Accuracy % Displayed Value) Protective Functions
AC Phase Amperes (1 YO) Voltage Phase Loss (less than 50% RMS)
AC Phase Voltage (1 YO) Current Phase Loss (1/16 largest
phase) Watts (2%) Phase Voltage Unbalance (5 to 40% -
5% steps)
Vars (2%) Phase Voltage Reversal
Power Factor (4%) Overvoltage (1 05 to 140% - 5% steps)
Frequency (0.5%) Undervoltage (9560% - 5% steps)
November 2003
Twin D Pump Station (860-3-TD) Contract 38891
Distribution Switchboard
1 6400-1 0
I
2.12
Metered Values
(Accuracy YO Displayed Value) Protective Functions
i
Watt-hours (2%) Time Delay for Overvoltage, Watt Demand (2%) with (5-, IO-, Undervoltage, and Phase Unbalance (0 15-, 30-min. interval) to 8 sec. - 1 sec. steps) i B. Input ranges of the MM&P shall accommodate external current transformers with ranges from 100/5 through 5000/5 amperes. Provide three (3) external current
transformers with rating as indicated on the Drawings or sized for incoming
service. Potential transformers shall be self included and fused up to 600 volts.
Above 600 volts, provide fused external potential transformers. Synchronizing
pulse input shall be provided and when activated shall override the preset watt demand interval and let the utility control the demand window.
I
C. Control power shall be capable of being supplied from the monitored incoming AC line without the need for a separate AC supply control circuit.
Outputs shall have separate Form C (NO/NC) trip and alarm contacts with
ratings of IO amperes at 115/240-v01t AC or 30-vo1t DC resistive. In addition,
provide a separate Form C (NO/NC) contact to provide a programmable kilbwatt-
hour pulse output. \
D.
E. The display face shall be membrane type and rated suitable for NEMA 3R and NEMA 12 mounting. The MM&P shall have a durable 6-digit LED display screen. The display screen and LEDs shall indicate both cause of trip and 'alarm conditions. Unit shall be mounted in the switchgear or MCC section dgor as
shown on the Drawings.
Provide an addressable communication card capable of transmitting all data, including trip data over a compatible two-wire local area network ;to a central personal computer for storage and/or printout.
MM&P shall be furnished in a drawout case. Provide test plugs for all circuits.
F.
G.
Power Condition Monitor
The electrical service power failure protection system consists of an electronic device
which provides protection against three-phase electrical motor loss due to power failure
conditions. Power failure conditions include: low voltage, phase loss, unbalanced voltage and phase reversal. The power failure protection device shall be SymCom, Inc. Motorsaver Model 101, Timemark Power Monitor D-264, or equal.
Contractor shall install the power failure protection system as shown on the Drawings or specified in the Technical Specifications and Special Requirements. The protection system shall monitor electrical line side power of specified equipment or facilities. The
power failure protection system shall automatically stop all electrical motors upon output relay deactivation (unstable power conditions) and shall transmit a power failure alarm
signal to the local RTU (where specified).
November 2003
Twin D Pump Station (860-3-TD) Contract 38891
Distribution Switchboard
16400-1 1
0 2.13 MCC Incoming Feeder Terminations and Device
Incoming conductors shall terminate within the control center on a main lug, or main
breaker termination point. Main lug terminations shall have adequate dedicated space
for the type and size of cable used and the lugs shall be standard mechanical screw
type with antitum feature
2.14 Ventilation and Heating
A. Switchboards and MCC ~ sections shall be provided with thermostatically
controlled space heaters to prevent condensation and thermostatically controlled
forced air ventilation for cooling. Heating and ventilation shall be as designed by
the manufacturer, unless shown specifically on the Drawings. Ventilation ,
openings, including fans shall be provided with washable air filters.
B. Forced air ventilation shall be provided by supply air fans unless otherwise
shown on the Drawings.
Supply air fans shall be rated 100 CFM (minimum) at 118 inch WC static , pressure and shall be provided with louver (grill) inlet, inlet filter, and gasketing
for weather-proof construction.
1 I
C. Air exhaust openings shall consist of louver (grill), filter, and gasketing for
weather-proof construction.
Filters shall be aluminum mesh, washable, and shall be furnished with two
bottles of spray adhesive. *
D.
E. Control power transformers with primary and secondary fuse protection shall be
provided as required for proper operation of the heating and ventilating
equipment unless Drawings show otherwise. Supply voltage shall be 120 volts,
60 Hz.
2.15 Utility Metering and Main Disconnect
A. Main Service
Where shown on the Drawings, main service shall consist of pull section, service
(metering) section, and main disconnect. Equipment shall include a separate,
barriered-off, utility metering compartment complete with hinged sealable door
as approved by the utility company. Bus work shall include provisions for
mounting utility company current transformers, potential transformers, potential
taps, test devices, and metering as required by the utility company. Provide
Service Entrance Label and provide necessary applicable service entrance
features per NEC, local code requirements, and utility company requirements.
6. Main Disconnect
Main disconnect shall be molded case circuit breaker or bolted pressure switch
as shown on the Drawings with ground fault protection system.
November 2003
Twin D Pump Station (860-3-TD) Contract 38891 Distribution Switchboard 16400-1 2
C. Ground Fault Indicate and Test Svstem
The 600 volt, 60 Hz ground fault protection system shall consist of a current
sensor enclosing all phase and neutral conductors of the circuit to be monitored,
appropriate relaying equipment to provide for desired ground fault current
sensitivity and time-current response characteristics, and equipment to trip the
main disconnect. Installation of the equipment shall be in accordance with the
manufacturer's recommendations.
1) Current Sensor
A sensitive current sensor shall be provided of sufficient size to encircle
the phase and neutral conductors. Current sensor output shall be
coordinated with the required input to the relay. A test winding shall be
included to simulate the flow of ground fault current through the current
sensor in order to test the operation of the ground fault protection system
including sensor pick-up, relay, and circuit protective device (main
disconnect) operation. The frame or the current sensor shall be so constructed that one leg can be opened to allow removal or installation
around the cable or bus without disturbing the cable or requiring drop-
links in the bus.
Ground Fault Relay
The relay shall be solid state for maximum reliability, except that a coil
operated output relay shall be provided to control 120 volt power to
operate the circuit protective device (main disconnect). The ground fault
relay shall require no external source of power for tripping the associated
protective device, drawing all the energy needed for proper operation of
the ground fault protection system directly from the output of the current
sensor.
Adjustable pickup current sensitivity for ground fault currents from 200
amperes to 1,200 amperes shall be provided. A calibrated dial shall be
provided for setting the current pickup point in the field. Settings for
individual relays shall be coordinated. Time delay provided by the relay
circuitry shall be nominally one second and shall be permanently
calibrated to preclude tampering after installation. A self-contained test
circuit which will test all components including sensor, relay, and trip
mechanism and a test coil in the current sensor shall be incorporated in
the system.
The circuit protective device (main disconnect) shall be provided to open
the circuit for normal switching, overload, short circuit, or ground fault. It
shall include a ground fault trip mechanism for activation by the ground
fault relay which, operating in conjunction with an interposing relay and
auxiliary power source, will release a stored-energy device to open the
switch. The ground fault trip mechanism shall be capable of operating at
55% of rated voltage to provide satisfactory operation under reduced
November 2003
Twin D Pump Station (860-3-TD) Contract 38891
Distribution Switchboard
16400-1 3
2.16
, 2.17
2.18
2.19
voltage that might accompany a ground fault condition. In addition, the
trip mechanism shall be equipped to operate by remote tripping such as
by a float switch. The switch interrupting rating shall be coordinated with
the time delay of the relay to insure that the switch is cepable of
interrupting any current it may be required to open.
i Customer Metering
Where shown on the Drawings, provide a separate customer metering compartment
with front hinged door with microprocessor-based metering system, complete with
current transformers and potential transformers including primary and secondary fuses.
Enclosures
A. Switchboard and MCC enclosures shall be as specified on the Drawings and
shall be suitable for the proposed location. As a minimum, switchboards shall be
housed in NEMA 1 enclosures and MCC's shall be housed in NEMA 12 or
NEMA 1 gasketed enclosures.
Outdoor switchboards and MCC enclosures shall be NEMA 3R as follows:
1. Enclosures shall be non-walk-in and meet applicable NEMA 3R
I B. I
requirements of UL.
2. Enclosures shall have NEMA 3R wrap roof sloping downward tgward
rear.
3. Outer sections shall be the same widths as indoor structures, except
each end of the outdoor assembly shall have an end trim. . '
4. The enclosure shall be provided with bolt on rear covers for each section.
5. Doors shall have provisions for padlocking and be located as shown on
the Drawings.
Nameplates
Engraved nameplates, mounted on the face of the assembly, shall be furnished for all
main and feeder circuits, starter compartments, and control compartments as indicated
on the Drawings. Nameplates shall be laminated plastic, black characters on white
background, and secured with stainless steel screws. Characters shall be 3/16 inch
high, minimum. Nameplates shall give item designation as shown on the Drawings, and shall be approved by the Owner prior to fabrication. Furnish Master nameplate giving
switchboard designation, voltage ampere rating, short circuit rating, manufacturer's
name, general order number and item number.
Finish
The finish shall consist of a coat of thermosetting, polyester powder paint applied
electrostatically to pre-cleaned and phosphatized steel and aluminum for internal and
November 2003
Twin D Pump Station (860-3-TD) Contract 38891
Distribution Switchboard
16400-1 4
external parts. The coating shall have minimum thickness of 1.5 mils and corrosion
resistance of 600 hours to 5% salt spray. Color shall match other enclosures (existing
or new). If necessary to match color, manufacturer shall coat complete assemblies with
1.5 mil thick exterior finish spray coat of air drying high-gloss enamel. Color of indoor
enclosures shall be ANSI49 Light Gray, unless specified otherwise. Exterior of outdoor
enclosures, including all NEMA 3R enclosures shall be white.
.
PART 3 EXECUTION
3.01 Factory Testing
A. The following standard factory tests shall be performed on the equipment
provided under this section. All tests shall be performed in accordance with the
latest version of ANSI and NEMA standards.
1. The switchboards and MCC's shall be completely assembled, wired,
adjusted and tested at the factory. After assembly, the complete
switchboard(s) shall be tested for operation under simulated service , conditions to assure the accuracy of the wiring and the functioning of all
equipment. The main circuits shall be given a dielectric test of 2200 volts '
for one minute between live parts and ground and between opposite
polarities. The wiring and control circuits shall be given a dielectric test of
1500 volts for one minute between live parts and ground.
I
B. The manufacturer shall provide three (3) certified copies of factory test reports to
Owner for approval prior to shipment.
3.02 Installation
A. The Contractors shall install all equipment per the manufacturer's written
recommendations and the Drawings.
B. Each assembly shall be provided with adequate lifting means and shall be
capable of being moved into installation position and bolted directly to a concrete
foundation.
3.03 Field Quality Control
A. Contractor shall provide the services of a qualified factory-trained manufacturer's
representative to assist the Contractor in installation and start-up of the
equipment specified under this section. The manufacturer's representative shall
provide technical direction and assistance to the Contractor in general assembly
of the equipment, connections and adjustments, and testing of the assembly and
components contained therein.
November 2003
Twin D Pump Station (860-3-TD) Contract 3889 1
Distribution Switchboard
16400-1 5
B. The following minimum work shall be performed by the Contractor. under the
technical direction of the manufacturer's service representative.
1. Rig the assembly into final location and install on level surface. '
2. Check all removable cells and starter units for easy removal and
insertion.
Perform insulation tests on each phase and verify low resistance ground
connection on ground bus.
1 !
3.
4. Connect all power wiring and control wiring and verify basic operation of
each starter from control power source.
5. Torque all bolted connections made in the field and verify all1 factory
bolted connections.
Calibrate any solid-state metering or control relays for their intended
purpose and make written notations of adjustments on record drapings.
Perform startup of any solid-state starters and adjustable frequency
6.
drives. !
'\
3.04 Field Adjustments and Testing
A. Follow the manufacturer's instructions and the Contract Documents conce.ming
any short circuit device settings, heater selection, timing relays, or startup of
components.
B. Contractor shall coordinate and set circuit breaker tripping sequence from main
service circuit breaker to individual motors.
C. Follow the minimum requirements as stipulated in the NETA testing procedure
for motor control center assemblies.
D. Generate a field report on tests performed, test values recorded, adjustments,
etc., and provide same to Owner for review and approval.
3.05 Manufacturer's Certification
A. A qualified factory-trained manufacturer's representative shall certify ' in writing
that the equipment has been installed, adjusted, and tested in accordance with
the manufacturer's recommendations. Equipment shall be inspected prior to the
generation of any reports.
B. The Contractor shall provide three (3) copies of the manufacturer's
representative's certification to Owner.
November 2003
Twin D Pump Station (860-3-TD) Contract 38891
Distribution Switchboard
16400-1 6
3.06 Instruction
After the equipment has been installed, tested, and adjusted, and placed in satisfactory
operating condition, the equipment manufacturer shall provide classroom instruction to
Owner's operating personnel in the use and maintenance of the equipment. Two (2)
hours of instruction shall be provided unless otherwise specified. Contra or shall give
prior to commencement of the instruction period. Scheduled training shall be at a time
acceptable to the Owner and the manufacturer. During this instruction period, the
manufacturer shall answer any questions from the operating personnel. The
manufacturer's obligation shall be considered ended when he and the Owner agree that
no further instruction is needed.
the Owner formal written notice of the proposed instruction period at le F st two weeks
I
November 2003
Twin D Pump Station (860-3-TD) Contract 38891
Distribution Switchboard
16400-1 7
e. SECTION 16500
VARIABLE FREQUENCY DRIVES
TECHNICAL SPECIFICATIONS
PART 1 - GENERAL
1.01 Specific Project Description
The work included in this Section shall consist of furnishing and installing variable speed
drives of the variable frequency drive type (VFD) as shown on the Drawings and as
specified herein, including all accessories and controls necessary for a complete and
operable system.
,
The equipment furnished under this Section shall be required to operate electric
motor(s) driving equipment specified by Section 1 131 0. Contractor shall be responsible
to coordinate the work under this Section, with all other electrical equipment and the
work specified and shown on the Drawings. Load requirements, torque, horsepower,
and speed range of VFDs shall be coordinated with and meet or exceed that of the
driven equipment.
J ,
All equipment specified herein shall be furnished by one (1) manufacturer as a complete
assembly.
1.02 Specific Project VFD Requirements e
A. General
Contractor shall furnish and install four (4) VFD units to drive the 150 hp vertical
turbine pumping units as shown on the Drawings, and specified herein and per
Section 11310. Pumping units shall be new pumps driven by squirrel cage,
induction type, premium efficiency, inverter duty hollow shaft vertical electric
motors.
B. Temperature Ratinq
Each VFD unit shall have a minimum rated 150 hp, 180 full load amp output at
40°C ambient temperature.
C. Tme
VFD units shall be provided with 6-pulse (or greater) rectifiers with line reactors
and passive filters or 18-pulse rectifiers as necessary to comply with the
harmonic distortion requirements specified herein. VFD units with 6-pulse or 12-
pulse rectifiers and broad band filters or active filters, are not acceptable.
September 2003 Twin D Pump Station (860-3-TD) Contract 38891
Variable Frequency Drives
16500-1
D. Enclosure and Coolinq
Each VFD unit, including harmonic suppression equipment, shall be hohed in a
gasketed, NEMA 1, floor mounted, 90" high enclosure as shown on the
Drawings.
Each VFD unit shall be cooled by forced air ventilation. A supply Air fan shall be
mounted in each enclosure to provide forced air ventilation and to maintain a
positive air pressure in the enclosure. Fans and louvers shall be sized by the
VFD manufacturer based on: heat generated from the VFD operating at full rated
capacity, heat generated from auxiliary components (e.g. transformers, filters,
and line reactors), and equipment operating under maximum ambient conditions.
A 10°F differential air temperature shall be utilized. Each supply and exhaust air
louver shall be furnished with a reusable air filter. Each VFD enclosure lshall.be
isolated from adjacent enclosure to prevent short circuiting of cooling air. Each
enclosure shall be furnished with a thermostat for cooling and heating. I
\
E. No Bwass Contactors Reauired
VFD units shall not be provided with bypass contactors as specified in Sbction 2.01.E.14 herein. 'I
F. Door Mounted Devices
Each VFD shall be provided with door mounted selector switches, lights,
controls, and relays as follows:
1. Padlockable circuit breaker. \
2. Power on indicator lamp (light).
3. VFD on-line indicator lamp.
4. Operator Interface (Digital Display/Keypad Unit). Unit shall control,
monitor and display VFD functions, operating conditions and faults.
5. Selector switches, indicator lights, and various devices as shown on
Drawings (ControVLadder Diagrams).
G. Harmonic Distortion
A harmonic study is required and line reactors and filters are to be provided per
2.01 J.
H. Warranty
Each VFD unit shall be provided with a minimum two-year warranty to be free
from defects in material or workmanship. Warranty shall commence upon date 0
September 2003 Twin D Pump Station (860-3-TD) Contract 38891 Variable Frequency Drives 16500-2
of project acceptance. During the warranty period, all parts and labor required to
repair or replace defective VFD units shall be provided at no cost to the Owner. 1
1.03 Submittals
T 2-5m3- All submittals shall be in accordance with the General Provisions, Secti
A. ShoD Drawinas
Contractor shall submit complete information, drawings, and technical data for all
equipment and components, including, but not limited to, the following:
September 2003
Design capabilities and operating parameters, including a detailed list of
all user selectable features and setpoints. Harmonic distortion study
demonstrating compliance with specified requirements herein. If
specified in the Specific VFD Requirements herein, a preliminary
harmonic analysis shall be submitted at bid time.
VFD operating efficiency (including control power and cooling power) and
output horsepower versus speed for the specific equipment being 'driven.
Motor manufacturer's guarantee that motor insulation and cooling is
suitable for continuous operation over specified frequency range and
VFD output pulse maximum peak voltage, pulse rise time, and pul,se rate.
Guarantee that proposed carrier frequency of VFD will not produce a
motor audible noise level when operating throughout the VFD speed
range of more than 5 dba above that designated in NEMA MG-1 for the
same motor operated at constant speed with a 60 Hz sine wave supply
voltage.
\
Catalog cut sheets and data for all control devices.
Drawing of enclosure, including overall dimensions, anchor hole sizes
and locations, and exterior door elevations showing location of all door
mounted components, including lights, switches, meters, controllers, and
corresponding nameplates. General arrangement drawings of enclosure
interior, including location and identification of all internal components.
Enclosure space heating and cooling system and design calculations
covering entire speed range of variable frequency drive. Where building
or panel cooling systems are shown on the Drawings, provide
calculations for maximum heat output of VFD and associated
components.
System schematic diagrams, block diagrams, interconnection diagrams
and ladder diagrams.
Detailed specifications and data covering all necessary components,
including, but not limited to, fuses, circuit breakers, switches, bypass
Variable Freauencv Drives TGn D Pump Station (860-3-TD) Contract 38891 i 6500-3
~.
contactors, line reactors, filters, cooling equipment, status lights, and
push buttons.
10) Manufacturer's warranty guaranteeing the operation of the VFD against
failure due to defects for two (2) years from date of project acceptance.
During this period, parts and labor shall be supplied at no cost to the
Owner.
B. Operation and Maintenance Manuals
Operation and maintenance manuals shall be provided in accordance with the
requirements of the Special Construction Provisions. As a minimum, operation
and maintenance manuals shall include: design capabilities, operating
parameters, recommended ranges, system schematic diagrams, block diagrams,
interconnection diagrams, ladder diagrams, complete wiring diagrams, enclosure
drawings, safety provisions and precautions, standard publications on all major
items furnished, parts list with specification packets on the entire unit, list of
recommended spare parts, and installation diagrams. Manuals shall be
completely indexed and include step-by-step procedures for the operation and
maintenance of the VFD as installed. The maintenance portion of the manual shall include preventive maintenance and troubleshooting for the entire system. 1
Contractor shall provide approved operations and maintenance manuals to
Owner at least 30 days prior to VFD startup and testing.
1
I ',
1.04 Quality
Contractor shall provide a complete, reliable, fully tested, adjustable speed drive system
suitable for manned or unmanned operation. The VFDs shall be as manufactured by
Toshiba, A.B.B., Eaton/Cutler/Hammer, Allen Bradley, or equal.
Third party distributor or packager modifications to a standard product will only be
permitted with written approval from the VFD manufacturer, and statement confirming
that the installed VFD equipment will be fully covered by manufacturer's warranty. In
addition, VFD manufacturer (factory) shall review and approve all shop drawings
prepared by third party distributors prior to submittal of said shop drawings to Owner.
PART 2 - PRODUCTS
2.01 Variable Frequency Drive (VFD)
A. General
The VFD units shall be integrated, solid state systems, designed to control the
speed of electric motor drivers for the driven equipment specified. VFD units
shall be as specified herein, including all requirements and modifications listed in
Section 1.02, Specific Project VFD Requirements.
September 2003 Twin D Pump Station (860-3-TD) Contract 38891
Variable Frequency Drives 165004
6. Environmental Conditions
Unless otherwise specified, the VFD units shall be capable of operation under
any combination of the following conditions without mechanical or electrical
damage.
Ambient Temperature:
Altitude:
\ 4 to 40 degrees C (40" to 100" degrees F)
500 ft above sea level
Relative Humidity: 100%
C. Rating I
VFD shall be sized based on the maximum motor horsepower and required
starting and operating torque of the selected equipment to be driven or the
minimum output as shown on the Drawings or specified herein, whichever is
greater.
Unless otherwise specified, VFD shall be capable of continuous operation bt any
speed between 20% (minimum) and 100% (maximum) of the driven equibmant full rated speed. \
D. Basic DescriDtion
The VFD units shall convert 460 volt (-5% to +lo%), three-phase, 60 hertz (f3%)
utility power to adjustable voltage (0 - 460V) and frequency (0 - 60 hz) three-
phase, AC power for stepless motor speed control with a capability of 1O:l speed
range. ,
The VFD shall be of the pulse-width modulated (PWM) type and shall consist of
a full-wave diode bridge converter to convert incoming fixed voltagefirequency to
a fixed DC voltage. The PWM strategy shall be of the space vector type
implemented in a microprocessor which generates a sine-coded output voltage.
The inverter output shall be generated by power transistors which shall be
controlled by a minimum of six identical base driver circuits. The VFD shall not
induce excessive power losses in the motor. The RMS motor line current
measured at rated speed, torque and voltage shall not exceed 105% of the rated
RMS motor current for pure sine wave operation.
The VFD shall produce an adjustable AC voltage/frequency output. The VFD
shall have an output voltage regulator to maintain correct voltage to frequency
ratio despite incoming voltage variations.
The VFD units shall be suitable for use with standard NEMA Design B squirrel-
cage induction motors having a 1.1 5 service factor, without derating and without
requiring any motor modifications.
The variable frequency control shall operate satisfactorily when connected to a
bus supplying other solid state power conversion equipment which may be
September 2003 Twin D Pump Station (860-3-TD) Contract 38891
Variable Frequency Drives 16500-5
causing up to 10% total harmonic voltage distortion and commutation notches up
to 36,500 volt microseconds, or when other VFDs are operated from the same
bus.
All equipment and work shall comply with the latest applicable standards of
ANSI, NEMA, IEEE, and NEC.
E. Features and Components
Unless otherwise specified, the VFD units shall be provided with the following
minimum features and components:
Main circuit breaker and in-line fuses or fused disconnect switch shall be
supplied to provide NEC required branch circuit protection. The fused
disconnect switch shall provide a short circuit interrupting capacity of
50,000 RMS symmetrical amps (minimum), and shall be mechanically
interlocked with the VFD unit enclosure door.
,
The minimum VFD efficiency shall be 96 percent at 100 percent speed , I and 90 percent at 50 percent speed. The power factor of VFD unit shall
be 95 percent minimum at all speeds.
Each VFD shall be provided with current overload protection for operation
in bypass mode (if specified).
Line reactors and filters as specified herein shall be provided for each 0 VFD.
The VFD shall have a programmable controller to provide automatic
restart after any individual trip condition resulting from either overcurrent,
overvoltage, undervoltage, or overtemperature. For safety, the drive shall
shut down and require manual reset and restart if the automatic
resethestart function is not successful within a maximum of three
attempts within a short time period.
A speed droop feature shall be included which reduces the speed of the
drive on transient overloads. The drive is to return to set speed after
transient is removed. If the acceleration or deceleration rates are too
rapid for the moment of inertia of the load, the drive is to automatically
compensate to prevent drive trip.
Automatic restart after drive trip or utility failure. Software selectable if
not desired.
SDeed Profile. Individual adjustable settings for start, stop, entry, slope,
and minimum and maximum speed points.
Process signal inverter. Software selectable to allow speed of drive to
vary inversely with input signal.
September 2003 Twin D Pump Station (860-3-TD) Contract 38891
Variable Frequency Drives 16500-6
A critical speed avoidance circuit shall be provided for selection of ,two
critical speeds with a rejection band centered on that speed. The drive
shall ignore any speed signals requiring drive operation within the
rejection band.
Proportional and integral setpoint process controller wit menu driven
selection and programming via door-mounted keypad. 7
Pick up a spinning load. The VFD shall be able to determine the motor
speed and resume control of a motor which is spinning in either direction
without tripping.
ODerator Interface. A door-mounted membrane keypad with integral 2-
line, 24-character (minimum) LCD display shall be furnished, capable' of
controlling the VFD and setting drive parameters, and shall include the
following features:
a. Digital display shall present all diagnostic message and parqmeter
values in English engineering units when accessed, without the
use of codes.
The keypad module shall contain a "self-test" software program
which can be activated to verify proper keypad operations.
The digital keypad shall allow the operator to enter 'exact
numerical settings in English engineering units. A plain English
user menu shall be provided in software as a guide to parameter
setting, (rather than codes). Drive parameters shall be factory set
in EEPROM and resettable in the field through the keypad.
Password security shall be available to protect drive parameters
from unauthorized personnel.
I
\.
b.
c.
d. Normally the digital display shall simultaneously display:
1. Speed demand in percent
ii. Output current in amperes
111. Frequency in hertz or RPM
iv. Control Mode: manuaVautomatic
v. Total three-phase KW or output volts
...
VFD Bypass. Unless otherwise specified, interlocked bypass contactors,
main circuit breakers, and controls shall be provided for automatic bypass
of the VFD to across the line (constant speed) operation in case of VFD
failure, except for condition of motor high temperature, motor over load,
or motor moisture. When selector switch is in AUTO VFD mode, upon
VFD failure the equipment shall stop and automatically restart in constant
speed mode via bypass contactors with starVstop functioning as if
operating on VFD. Time delay for restart in bypass mode shall be
provided. Manual reset to return to VFD mode shall be required. The
VFD shall be isolated during bypass operation.
Variable Frequency Drives September 2003 Twin D Pump Station (860-3-TD) Contract 38891 7 6500-7
Indicating lights for operation in VFD mode and bypass mode shall be 0 provided. Selector switch shall be provided with bypass position to allow
operation in bypass mode without VFD failure.
Dry contacts shall be provided for operation in bypass mode for
connection to telemetry system.
15) Controls. Each VFD programmable controller shall be programmed to
accept a 4-20 ma signal for automatic speed adjustment, and energized
and dry contact closures from the facility control system for automatic
start and stop of the driven equipment.
Each VFD shall be provided with reduced voltage transformer(s).
Transformer(s) shall be properly sized for controls, lights, ventilation, and
heating.
I VFD shall be equipped to function as specified herein and as shown on
the drawing. Each VFD shall be equipped with the controls shown on the ,
drawings unless otherwise specified in Section 1.02 Specific Project VFD
Requirements.
Door Mounted Devices:
a.
b.
Padlockable handle for fused disconnect switch.
Power on indicator lamp (light).
c. VFD on-line indicator lamp.
d. Bypass on-line indicator lamp (if bypass contactors are specified).
e. VFD malfunction indicator lamp.
f. VFD fault reset push button.
g. Motor thermal and motor overload reset push buttons.
h. Operator Interface (Digital Display/Keypad Unit). Unit shall
control, monitor and display VFD functions, operating conditions
and faults. Operating conditions shall include, but not be limited
to: output frequency, output voltage, motor current, running
speed (rpm), input and output power.
i. VFD Manual, VFD Auto, Off, Bypass (if bypass contactors are
specified) selector switch as specified. Selector switch shall be
provided with auxiliary contacts for position signal to remote
control panel.
j. Elapsed time meter (eight (8) digit, minimum).
September 2003 Twin D Pump Station (860-3-TD) Contract 38891
Variable Frequency Drives
16500-8
k. Motor high temperature indicator lamp. '
1. Motor over load indicator lamp.
m. Other functions and devices shown on the Drawings or otherwise
specified.
Motor "high temperature" control module shall be mounted within the VFD
enclosure. VFD manufacturer shall coordinate control module installation with
the motor manufacturer. VFD shall shut down on motor "high temperature" and
"overload" conditions. External dry contacts shall be provided for each motor
alarm condition and common VFD fault condition.
F. Protective Features
J The VFD unit shall be provided with capabilities and features to protect drive
Components and the driven motor from damage. Protective features with user
adjustable setpoints shall be accessed through the operator interface for '
enabling or disabling. As a minimum, the VFD unit shall be provided with the I
following protective features:
Single phase fault or 3-phase short circuit on VFD output terminals
without damage to any power component or clearing any fuses (40,000
AIC minimum).
Static instantaneous overcurrent and overvoltage trip with inverse '
overcurrent protection.
Static overspeed (overfrequency) protection.
Phase loss and undervoltage protection.
Power unit overtemperature protection.
Electronic motor inverse time overload protection.
Responsive action to motor winding temperature detectors or
thermostatic switches. Provide dry contact (NC) input to the VFD.
Isolated operator controls.
Input line fuses.
Be insensitive to incoming power phase sequence.
Desaturation circuit to drive inverter section transistor base current to
zero in event of controller fault.
DC bus discharge circuit with an indicator lamp for protection of operator.
September 2003 Variable Frequency Drives
Twin D Pump Station (860-3-TD) Contract 38891 16500-9
-.
13)
14) Individual transistor overcurrent protection.
Input line noise suppression with line reactor.
i
G. Parameter Settincls
The following system configuration settings shall be provided anb shall be field
adjustable through the keypad/display unit or via the serial communication port.
Except for motor nameplate data, all parameters shall be adjustable while the
processor is on-line and the drive is running.
Motor Nameplate Data
a.
b.
d.
e.
f.
9- h.
C.
Motor frequency
Number of poles
Full load speed
Motor volts
Motor full load amps
Motor Kw
Current minimum
Current maximum
VFD Limits
a.
b.,
d.
e.
f.
9. h.
i.
j.
C.
Independent acceleration/deceleration rates
No load boost
Vmin, Vmax, V/Hz
Full load boost
Overload trip curve select (inverse or constant)
MidMax speed (frequency)
Auto reset for load or voltage trip select
Slip compensation
Catch-A Spinning-Load select
Overload trip time set
VFD Parameters
a. Voltage loop gain
b. Voltage loop stability
C. Current loop stability
Controller Adjustments
a. PID control enable/disable
b. Setpoint select
C. Proportional band select
d. Reset time select
e. Rate time select
f. Input signal scaling
September 2003 Twin D Pump Station (860-3-TD) Contract 38891
____-- -
Variable Frequency Drives 16500-1 0
g, h.
1.
j. Min, Max Speed Select
k.
Input signal select (4-20 mNO-5 volts)
Auto start functions: OnlOff , Delay OnlOff , Level Select OnlOff
Speed Profile: Entry, Exit, Point Select
Inverse profile select (allows VFD speed to vary directly or
inversely with input signal)
H. Diaanostic Features and Fault Handlinq
1) The VFD shall include a comprehensive microprocessor based digital
diagnostic system which monitors its own control functions and displays
faults and operating conditions. Microprocessor systems shall be
products of the same manufacturer as the VFD (to assure single source
responsibility, availability of service and access to spare parts).
'
2) A "Fault Log" shall record, store, and display upon demand, the 16
(minimum) most recent faults. The fault log shall be accessible via the
keypad display.
I. Enclosures and Cooling
VFD units shall be housed in wall mounted or floor mounted enclosures
equipped with door locking devices as shown on the Drawings and specified
herein. Floor mounted enclosures shall be mounted on concrete bases,
extending 3 inches above the surrounding ground or floor. Enclosures shall be
of sufficient size to afford access to all parts and components, and installed with
clearance in front of the enclosure to satisfy all code requirements. Sufficient
internal lighting to perform maintenance work shall be provided. Lighting shall
be controlled with an internal light switch.
Where shown on Drawings or specified herein that the VFD shall be installed in
MCC line-up, the enclosure shall match MCC construction including height and
depth.
Unless otherwise specified, the sheet metal surfaces of all enclosures shall be
phosphetized and coated with a rust resisting primer. Over the primer a
corrosion resistant baked enamel finish shall be applied on interior and exterior
metal surfaces. Exterior color shall be medium light gray (unless otherwise
specified) and interior color shall be white. All hardware shall have a corrosion
resistant finish.
Unless otherwise specified, outdoor electrical equipment shall be housed in
weatherproof, gasketed, NEMA Type 3R enclosures, and indoor electrical
equipment shall be housed in gasketed NEMA Type 1 enclosures.
Enclosures shall be provided with heating system for condensation protection
and shall be ventilated, or air conditioned, as specified or required for trouble-
free operation, and shall be equipped with air filters to eliminate dust. All cooling
devices shall be constructed to enable regular maintenance or removal without
September 2003 Twin D Pump Station (860-3-TD) Contract 38891
Variable Frequency Drives
16500-1 1
dismantling of the VFD unit. Refer to ambient conditions as specified herein and
requirement to submit cooling calculations.
J. Harmonic Distortion i
Individual or simultaneous operation of the VFDs without operation of any linear
loads shall not add more than 5% total harmonic voltage distortion to the normal
bus, nor more than 10% while operating from standby generated (if applicable)
per IEEE 519, 1992. Maximum allowable total and individual harmonic current
distortion limits for each odd harmonic shall not exceed limits as set forth by
IEEE 519, 1992.
A comprehensive harmonic study of the system, including all variable frequency
drive units, existing and proposed shall be prepared by the Contractor. The
results of this study shall be submitted to the Owner as part of the shop,drawing
submittals. Should this study indicate the need for tuned filters, line reactors, or
isolation equipment for the proposed VFDs, said components and equipment
shall be supplied at no extra cost to the Owner. Shop drawings shall indicate the
location of the harmonic suppression equipment. Harmonic suppression
equipment location is subject to acceptance by the Owner. L
t If harmonic filters and/or line reactors are required to meet IEEq 519
requirements or where specified to be provided, the VFD manufacturer shall
furnish same and be responsible for their design and manufacturing. If specified
in the Specific VFD Requirements herein, a preliminary harmonic analysis, which
includes all harmonics to the 99th, shall be submitted at bid time. Compliance
shall be verified by the VFD manufacturer with onsite field measurements. of the
harmonic distortion at the point of common coupling with and without VFDs
operating. I
Specific Site Conditions for Pumping Units VFDs:
The proposed VFDs will be provided with electrical power from new San Diego
Gas and Electric Company transformer and service. The utility connection shall
be the PCC for voltage and current distortion. The utility short circuit at the utility
interface is 14,000 amps. Harmonic calculations shall be based on data
provided on the Drawings ("Single Line Diagram"), except that no linear loads
shall be included in the analysis. Harmonic analyses shall be prepared for
pumping units operating simultaneously.
K. Line Reactors
Unless otherwise specified, each VFD shall be provided with a line reactor as
manufactured by Trans-Coil, Inc., Mirus International, Inc., or equal. Unless
shown otherwise on the Drawings, line reactor shall be factory mounted and
wired within the VFD enclosure.
September 2003 Twin D Pump Station (860-3-TD) Contract 38891
Variable Frequency Drives 1 6500-1 2
I
Line reactor shall be provided in the incoming power lines to the VFD to:
I)
1
Minimize the effects of "line notching" due to the switching of power
semiconductor devices for controlled rectifier type drives.
2) Prevent overvoltage trips and/or damage to the drive I itself due to
transients (i.e. utility power capacitor switching, etc.) on the VFD
incoming power lines.
3) Reduce input harmonic currents thereby improving the total power factor
of the drive system.
The line reactor shall provide a minimum of 2-112% line impedance ,and -be
designed for harmonic filtering service and for slowing the rate of rapid current
changes. The line reactors shall be UL component-recognized and shall be built
to comply with UL 508A standard.
Construction shall be of copper wire wound on steel cores. Reactors &all be
designed and rated for 150% of normal, three-phase, 60 Hz current. Rebctars
shall be sized appropriately for the total connected load. The design mahmum
temperature rise for reactors shall be 115" C. The core shall be made of
laminated, grain-oriented electrical steel (grade M6 or better). Windings shall
consist of copper wire or of copper foil. Terminations shall be copper alloy ring
lugs, UL-recognized terminal blocks, or solid copper bus. Line reactors shall be
air-gapped to avoid control point saturation. Line reactors shall be double
impregnated with 100% solid epoxy resin. All insulation varnish systems shall be rated Class H (180°C) or better, 600V. Inductance shall remain above 50% of
nominal for any overload up to 200% of rated current. Line reactors shall not
sustain any thermal damage for levels up to 150% of RMS current for a minimum
period of five minutes.
L. Harmonic Filters
Harmonic filters shall be provided as required to attenuate system harmonics to
below IEEE 519 distortion limits. Unless otherwise specified in the Specific
Project VFD Requirements herein or shown on the Drawings, harmonic filters
shall be passive or active type as determined by the manufacturer's harmonic
distortion study. Passivekuned filters shall attenuate specific harmonic
frequencies. Active filters shall constantly monitor the current on the line and
inject equal and opposite harmonics as necessary.
1) Passive Filters
Passive filters, if selected, shall be provided for each VFD unit. Passive
(trap) filters shall contain tuned circuits designed to remove harmonics
generated within the power distribution system while improving the
system power factor. Passive filters shall consist of inductive and
capacitive elements arranged in a series configuration and tuned to
resonate just below the harmonic frequency for which they are designed
September 2003 Twin D Pump Station (860-3-TD) Contract 38891
Variable Frequency Drives 16500-13
e to filter. Passive filters shall be UL-listed. Passive filters shall be as
manufactured by Trans-Coil, Inc., Mirus International, Inc., or equal .
High endurance capacitors shall be rated to operate continuously at
225% of nominal fundamental current. High endurance capacitor cells
shall have a voltage rating capable of handling continuously the nominal
system voltage plus 10% of the over voltage tolerance. High endurance
capacitor cells shall be rated to operate at an air temperature of 65°C.
Liquid-filled capacitor cells shall be contained in hermetically sealed metal
cans filled with a biodegradable, non-PCB impregnate. Liquid-filled
capacitor cells shall have a UL-listed, pressure-sensitive interrupter
which, in case of a hazardous internal pressure increase, shall disconnect all three phases simultaneously. Individual high endurance capacitor
cells, or groups of cells, shall be provided with a 3-phase, delta-
connected discharge resistor network. The resistors shall be sized to
reduce residual voltage to less than 50V within one minute of de-
energization.
Tuning inductors, if provided separate from line reactors, shall comply
with all line reactor requirements specified herein.
Contactors shall be rated for capacitor switching at 660V and at 60 Hz.
Contactors shall be de-rated to compensate for extra switching loads
imposed by harmonic frequencies. Internal wiring, including that for the
linehuning reactors, shall be protected by three fuses, one for each
phase. Fuses shall be current-limiting at 200,000 symmetrical amperes,
interrupting at 600V AC, 60Hz. Fuses shall be UL-listed, Class T. Fuses
shall be sized to a minimum of 150 % of nominal capacitor rating. Fuses
internal to the capacitor cell shall not be acceptable as the primary means
of protection.
Passive filters larger than 20kVAR shall be protected by a 3-phase
protection circuit, which shall continuously monitor operating parameters.
Protection shall be provided against reactor or capacitor overload , phase
imbalance, and continued operation with blown fuses. An independent
form C relay contact, rated at 5 amperes, 120V AC, shall be provided for
remote signaling.
Passive filters shall be factory mounted and wired within the VFD
enclosure, unless shown otherwise on the Drawings.
2) Active Filters
Active filters, if selected, shall be connected to the distribution panel or
bus supplying power to the VFD(s). Single or multiple active filters may
be utilized to provide compliance with IEEE 519 harmonic distortion
requirements. As a minimum, one additional active filter (size equal to
largest active filter selected for IEEE 51 9 compliance) shall be provided
for redundancy. Active filter units shall be AccuSine Power Correction
System, as manufactured by Schneider Electric, or equal.
September 2003 Twin D Pump Station (860-3-TD) Contract 38891
Variable Frequency Drives 1 6500-1 4
Active filter units shall be designed in accordance with the applicable
sections of ANSI IEEE Std C62.41-1991 [Surge Withstand Capacity],
ANSI IEEE Std 519-1992 [Harmonic Limits], and UL 508C [UL
Requirements for Power Conversion Equipment]. Active filter units shall
be UL and CSA approved.
Active filter units shall be designed to electronically inject harmonic
current to cancel the load produced harmonic current such that the
upstream power harmonic current and voltage are reduced to below 5%
total demand distortion TDD and below 5% total harmonic voltage
distortion [THD(V)]. Performance of the active harmonic filter shall be
independent of the impedance of the power source. All performance
levels shall be attained whether on the normal electrical service, standby
power generator, or output of uninterruptible power supply (UPS).
Reactive current compensation shall be provided for up to 0.95 lagging
displacement power factor. Leading power factor is not permitted.
Reactive current compensation (Le. displacement power factor ,
correction) shall be activated via a digital keypadldisplay mounted on the
door of the enclosure. When reactive current compensation is activated,
the filter unit shall first perform harmonic current correction and then use
the remaining capacity to inject reactive current compensation to the
attain the specified level herein defined.
J
Two current transformers mounted on phases A and B shall be provided
per active filter location. Current transformers shall be split core type and
shall be rated for the total rated rms current of the total load at each
installed location. Each current transformer shall be rated for 400 Hertz.
a. Enclosure
Unless shown otherwise on the Drawings, each active filter unit
shall be provided in floor mounted, 90" high, NEMA 1 gasketed
enclosure. Where active filter units are to be installed in a MCC or
VFD line up, panel height, depth, and color shall match adjacent
panel(s). Enclosure ventilation shall comply with paragraph 2.01 .I
herein. Each unit shall include a door-interlocked disconnect that
provides power interruption when the door is opened. Disconnect
device shall be lockable in the power "OFF" position. Each unit
shall in shall be provided with Class T input fuses rated at 200,000
AIC (amps interrupting capacity).
b. Operator Controls and Interface
Each active filter unit shall be provided with a digital interface that
includes an alphanumeric display consisting of 2-lines with 20
characters per line. Operator pushbuttons shall include run, stop,
setup, enter, and up/down scroll. The display shall provide
operating data while the unit is functioning. Display parameters
shall include AC line voltage, total rms load current, load harmonic
September 2003 Twin D Pump Station (860-3-TD) Contract 38891
Variable Frequency Drives
16500-1 5
current, load reactive current, and filter output harmonic and
reactive current. When the output of the active filter unit is at full
rated capacity, the display shall indicate at-maximum caqacity and
actuate an at-maximum capacity relay. All fault condihons shall
be displayed as they occur. Output contacts shall be provided for
power-on, run, fault and at-maximum capacity. Each contact shall
be rated for I Ampere at 120/240 volts. One form contact shall
be provided for each relay. F
C. Design
Filter units shall be defined as a power electronic device
consisting of power semiconductors that switch into the' AC lines
to modulate its output to cancel detrimental harmonic and/or
reactive currents. A DC bus shall store power for power
semiconductor switching. A microprocessor shall control the
operation of the power converter. Each unit shall be designed
with a current limiting function to protect the semiconductors.
Operation shall continue indefinitely at maximum current level
without tripping off or damage to filter unit components. Ea h unit
shall incorporate an over-temperature output roll bad that
reduces the total output current in order to maintain mahmum
current correction within the electrical system. Two distinct levels
of faults shall be employed. Non-critical level faults will provide
automatic restart and a return to normal operation upon autosmatic
fault clearance. Critical level faults stop the function of the unit
and await operator action.
Where multiple active filter units are provided to atteduate system
harmonics, units shall be installed in parallel to inject current according to the information received from the CTs. Each unit
shall function independently. If one unit is off or faulted, the
remaining units shall adjust accordingly to maintain optimum
harmonic cancellation levels up to the capacity of the remaining
units.
M. EMVRFI Filters
An electromagnetic interference and radio frequency interference (EMVRFI) filter
shall be provided in the incoming power lines of the VFD if required as a result of
system startup and testing to:
1) Prevent conducted radio frequency noise generated by the VFD from
interfering with other sensitive electronic equipment (such as lighting
systems, telecommunications equipment, instrumentation, etc.).
2) Enable the VFD to meet RFI limits as specified by FCC Docket 20780
(Part 15, Subpart J) for conducted emissions.
September 2003 Twin D Pump Station (860-3-TD) Contract 38891
Variable Frequency Drives 16500-1 6
The EMVRFI filter shall be capable of handling a 150% current overload for at
least 1 minute. 1
N. Motor Protection OutDut Filter
Where the conductor length between the VFD and motor exceed 100 feet, or
where specified on the Drawings or in the specific project VFD r 4 uirements, a
motor protection output filter shall be provided within the VFD enclosure. The
motor protection output filter shall be a low pass filter which removes the steep
edges from the PWM voltage wave form and protects the motor from voltage
spiking. The output filter shall be sized for the motor load and shall be located
immediately adjacent to the output terminals of the drive. The motor ,p'rotection
output filter shall be Model KLC as manufactured by Trans-Coil, Inc., or equal.
1
2.03 Spare Parts
Contractor shall furnish the following spare parts for each type and size of VFD:
A.
6.
!
I
f
Two (2) spare lamp lenses of each color.
One (1) dozen pilot lamps.
C.
D.
Spare parts shall be undamaged and packaged and labeled in original containers and
supplied to the Owner at time of final acceptance of the work.
One (1) complete set of fuses.
One (1) complete set of air filters for each VFD enclosure. -.<
*I
PART 3 - EXECUTION
3.01 Installation
A. All equipment furnished hereunder shall be installed and aligned under the
supervision of a factory-trained service engineer, other than a sales
representative.
B. Conduit stub-ups for interconnected cables and remote cables shall be located
and terminated in accordance with the drive manufacturer's written
recommendations which shall be subject to Owner's review and approval.
C. The Contractor shall have the manufacturer examine the Contract Documents as
to the operating environment that the VFD unit will be subjected to, and advise
the Engineer prior to bidding of any potential problems, which could prevent the
drive from functioning as intended, and its recommendations for preventing
expected problems.
D. Under no circumstances are any portions of the VFD unit to be energized without
authorization from the manufacturer's representative.
September 2003 Twin D Pump Station (860-3-TD) Contract 38891
Variable Frequency Drives 16500-1 7
3.02 Testing, Manufacturer's Services, and Instruction
A. Upon completion of manufacturing, each VFD unit shall be factory inspected and
load tested. Certification that the factory inspections and load tests have been
successfully performed shall be submitted to the Owner prior to shipment.
Manufacturer or supplier of the equipment furnished under this Section shall
furnish the services of competent factory-trained personnel to provide technical
assistance during installation and start-up of the VFD equipment. Prior to start-
up, manufacturer shall provide Owner with written certification stating that the
VFD equipment, including controls, have been properly installed and are ready
for operation.
After the equipment has been installed, tested, and adjusted, and placed in
satisfactory operating condition, the equipment manufacturer shall provide
classroom instruction to Owner's operating personnel in the use and
maintenance of the equipment. Four (4) hours of instruction shall be provided
unless otherwise specified. Contractor shall give the Owner formal written notice
of the proposed instruction period at least two weeks prior to commencement of , the instruction period. Scheduled training shall be at a time acceptable to the
Owner and the manufacturer. During this instruction period, the manufacturer
shall answer any questions from the operating personnel. The manufacturer's
obligation shall be considered ended when he and the Owner agree that no
further instruction is needed.
Field testing shall be witnessed by the Owner. Prior to the commencement of
field testing service engineer shall set and/or adjust all operating parameters
according to the manufacturer's written instructions and Owner's preference for
VFD features which may be enabled or disabled through the operator interface.
B.
e C.
VFD field testing shall be conducted concurrently with field testing of the driven
equipment. Field testing shall demonstrate satisfactory operation of all
interlocks, alarms, and normal operational sequences. The drive manufacturer
shall use suitable test equipment to locate and correct all malfunctions.
Repeated failure of any component will cause the test to be terminated and
restarted when equipment has been fixed. VFD performance shall be
documented by obtaining concurrent readings showing input and output:
voltage, amperage, power factor, and power over the full speed range of driven
equipment.
Harmonic distortion tests shall be run on the VFDs and the bus to determine the
voltage distortion and current distortion and compliance with IEEE 51 9-1 992
standards. Measurements shall be made utilizing a Dranetz analyzer or a BMI
analyzer capable of recording snapshots of the current and voltage distortions.
Measurements shall include phase to phase, phase to neutral, and neutral to
ground. The test shall be run over the full range of VFD operation. Graphs of
the test results shall be submitted for speed values of 60%, 80%, and 100%.
Also, testing shall be performed with no VFD units operating, and for 3 pumping
units operating simultaneously (no concurrent linear loads).
September 2003 Twin D Pump Station (860-3-TD) Contract 38891
Variable Frequency Drives 16500-1 8
A written report covering the service engineer's inspection findings, field test
readings, field test results and installation certification shall be submitted to the
Owner. The report shall include a comparison of readings from the VFD and
Contractor furnished meters and an evaluation of field measured efficiencies
versus manufacturer's guaranteed efficiencies.
September 2003 Twin D Pump Station (860-3-TD) Contract 38891
Variable Frequency Drives
1 6500-1 9
SECTION 1661 5
TRANSIENT VOLTAGE SURGE SUPPRESSION SYSTEM
PART 1 - GENERAL
1 .Ol Description i
A. Contractor shall furnish and install a modular, high-energy transient voltage
surge suppression (TVSS) system as specified herein and as shown on the
Drawings. The specified system shall divert surge current, clamp transient
voltage, and attenuate high-frequency electrical line noise. The TVSS system
shall be suitable in ANSVIEEE C62.41 Category A, B, and C3 environments, as
tested according to ANSMEEE C62.11 and C62.45. I
B. WSS systems shall be provided in the following applications:
1. Mounted inside or adjacent to the service entrance switchboard. :
1,
2. Mounted inside or adjacent to distribution panel enclosures. !
f
WSS systems mounted inside service entrance and distribution panel
enclosures shall be approved for said application by the service entrance and
distribution panel manufacturers.
1.02 Applicable Specifications and Standards e
A. The specified system shall be designed, manufactured, tested, and1 installed in compliance with the following standards:
1. American National Standards Institute and institute of Electrim1 and
Electronic Engineers (ANSVIEEE) C62.41 , Recommended Practice for
Surge Voltages in Low-Voltage AC Power Circuits, Category B and C.
2. ANSVIEEE C62.45, Guide on Surge Testing for Equipment Connected to
Low-Voltage AC Power Circuits.
2. Federal Information Processing Standards Publication 94 (FIPS PUB 94).
3. Federal Specification (W-P-115b and W-C-375a, b).
4. National Electrical Manufacturers Association (NEMA LS-1 , AB-1 , PB-I ,
PB-1 .I and PB-I .2).
5. National Fire Protection Association (NFPA-70 [NEC], NFPA-75 and
NFPA-78).
6. Military Standard 220A.
September 2003 Transient Voltage Surge Suppressor
Twin D Pump Station (860-3-TD) Contract 38891 1661 5-1
A.
B.
C.
D.
E.
7. Underwriters Laboratories:
a.
b. ANSIIUL-67, Panel boards.
C.
ANSIIUL-50, Enclosures for Electrical Equipment.
ANSIIUL-489, Molded Case Circuit Breakers and Circuit Breaker
Enclosures.
ANS VU L-891, Dead-Front Switch boards.
ANSIIUL-943, Ground Fault Circuit Interrupters.
ANSIIUL-I 283, Electromagnetic Interference Filters.
d.
e.
f.
9. ANSIIUL-1449 Second Edition, Transient Voltage Surge
Suppressors. J B. Individual TVSS system units shall be UL listed and labeled under ANSWL-1449 ’
and the surge ratings shall be permanently affixed to the unit. The units shall I
also be listed and labeled under ANSVUL-1283.
1.03 Definitions
Clampincr Voltaae: The applied surge shall be induced at the 90-degree phase
angle of the
applied system frequency voltage. The voltage measured at the end of the 6 inch
(maximum) long output leads of the TVSS and from the zero voltage reference to
the peak of the surge.
Let-Through Voltacre: The applied surge shall be induced at the 90-degree phase
angle of the applied system frequency voltage. The voltage measured at the end
of the 6 inch (maximum) long output leads of the TVSS and from the system
peak voltage to the peak of the surge.
Maximum Continuous Operatincr Voltaae (MCOV): The maximum steady state
voltage at which the TVSS system can operate and meet its specification within
its rated temperature.
Maximum Surge Current: The maximum 8x20 microsecond surge current pulse
the TVSS system is capable of surviving on a single-impulse basis without suffering either performance degradation or more than 10 percent deviation of
clamping voltage at a specified surge current. Listed by mode, since number and
type of components in any TVSS may vary by mode.
Protection Modes: This parameter identifies the modes for which the NSS
system has directly connected protection elements, i.e., line-to-neutral (L-N), line-
to-line (L-L), line-to ground (L-G), neutral-to-ground (N-G).
September 2003 Transient Voltage Surge Suppressor Twin D Pump Station (860-3-TD) Contract 38891 1661 5-2
F. Surue Current Der Phase: The per phase rating is the total surge current capacity
connected to a given phase conductor. For example, a wye system surge current
per phase would equal L-N plus L-G; a delta system surge current per phase
would equal L-L plus L-G. The N-G mode is not included in the per phase
calculation.
1.04 . Submittals
A. All submittals shall be in accordance with the General Provisions, Section 2-5.3.
B. Submittals shall include, but not be limited to, the following:
1. Standard manufacturer catalog data sheets, including UL product listing
data.
2. Electrical and mechanical drawings showing unit dimensions, weights,
component and connection locations, mounting provisions, connection
details, and wiring diagram.
Certified test data from a third party laboratory, verifying clamping voltage 4
rating, surge current rating, repetitive surge current rating, and noise
attenuation compliance. Testing shall be in accordance with ANSVIEEE
C.45 and MILSTD-220A.
‘J
3.
4. Written approval from service entrance and distribution panel
manufacturers for TVSS systems mounted internally within panel
enclosures.
5. Instructions for installation and connection (external units only).
C. Operation and maintenance manuals covering all NSS system equipment and
components. Operation and maintenance manuals shall be provided in
accordance with the Special Construction Provisions.
I .05 Quality Assurance
TVSS systems shall be as manufactured by Current Technology, LEA International Inc.,
Liebert, or equal.
1.06 Warranty
Manufacturer shall provide a product warranty for a period of not less than five (5) years
from date of acceptance by Owner. Warranty shall cover unlimited replacement of
TVSS modules during the warranty period and shall include all parts and labor at no cost
to the Owner.
September 2003 Transient Voltage Surge Suppressor
Twin D Pump Station (860-3-TD) Contract 38891 1661 5-3
-
PART 2 - PRODUCTS
2.01 WSS System
A. Operatinq Conditions
I. Frequency: 47 to 63 hertz.
2. Ambient temperature: -40 OF to +140 OF.
3.
4.
Relative humidity: 5 % to 95 % (non-condensing).
Altitude: 0 to 12,000 feet above sea level.
5. Noise: less than 45 dBA at 5 feet.
6. Seismic: UBC Seismic Zone 4
7. No appreciable magnetic fields. System shall be capable of use directly in computer rooms or in any other location without danger to data storage systems or devices. \
\
B. Electrical Requirements and Performance
1. The nominal unit operating voltage and configuration shall be as indicated
on the Drawings.
2. Each TVSS unit shall include a safety interlocked disconnect switch in the
unit enclosure with an externally mounted manual operator. The switch
shall be rated 600 VAC. Each NSS unit mode shall be fused with a 200
kAlC surge rated fuse. Systems using fuses that open below the maximum surge current level are unacceptable. Disconnect switch and
fusing system shall be included in the surge current testing of the TVSS
unit.
3. The maximum continuous operating voltage (MCOV) of all suppression
components utilized in the unit shall be greater than 115 percent of the
nominal system operating voltage.
4. Tested and suitable for ANSVIEEE C62.41 Category C3 environments.
5. Protection modes:
a. For a wye configured system, device must have directly
connected suppression elements between line-neutral (L-N), line-
ground (L-G), neutral-ground (N-G), and line-line (L-L).
September 2003 Transient Voltage Surge Suppressor
Twin D Pump Station (860-3-TD) Contract 38891 16615-4
_I_- -_
6. Maximum surge current rating:
I a. Service entrance applications:
1)
2)
Maximum surge current rating per phase shall be minimum
250kA.
Maximum surge current rating per mode shall be minimum
125kA.
‘i
b. Branch circuit applications:
I.
1) Maximum surge current rating per phase shall be minimum
120kA. I
2) Maximum surge current rating per mode shall be minimum
60kA.
The maximum surge current rating shall be based on testing! of a
complete TVSS unit, including integral disconnect, fuses, add all components that make up the TVSS system. Units that dehe a
maximum surge current rating by adding test results of individual
components are not acceptable.
Suppression voltage rating (SVR) shall be tested with the integral
disconnect in accordance with ANSI/UL-1449. The SVR values shall not
exceed the following:
a.
b.
7.
-1
277/480V system: 800 volt (L-N, L-GI N-G), 1500 volt (L-L)
480 delta system: 1500 volt (L-G, L-L)
8. Maximum ANSVIEEE Category C3 let through voltage based on IEEE
C62.41 and C62.45 remmmended procedures for Category C3 surges
(20 kV, 10 kA):
a. 277/480V: 1225 volt (L-N), including integral disconnect.
9. Each TVSS unit shall be capable of surviving repetitive ANSIIIEEE
C62.41 Category C3 transients without failure or more than 10 percent
degradation of UL 1449 clamping voltage. The minimum number of
surges per phase the unit shall be able to protect against are as follows:
a. Service entrance applications: 7,500.
b. Branch circuit applications: 2,500.
IO. EMllRFl filter shall provide minimum 40 dB noise attenuation at 100 kHz
with an insertion ratio of 50:l using MIL-STD-220A.
September 2003 Transient Voltage Surge Suppressor
Twin D Pump Station (860-3-TD) Contract 38891 1661 55
I -
11. Surge current shall be equally distributed to all components to ensure
equal stressing and maximum performance.
Multiple WSS units shall not be connected in series to achieve the
specified performance.
12.
13. As a minimum, safety and diagnostic monitoring shall include the
following:
a. Solid-state monitoring of each mode and power loss in any phase.
Monitoring of fuse status only is unacceptable.
b. Audible alarm and surge counter. Surge counter shall utilize self-
contained batteries with a nominal life of ten (IO) years. An alarm
onloff switch shall be provided to silence the alarm. An alarm
push-to-test switch shall be provided to test the alarm function.
I c. Form C dry contacts (NOINC) for remote status monitoring. Alarm
contact
Externally visible greedred solid-state indicator lights. Absence of ,
a green light and presence of red light shall indicate which
rnode(s) or phase(s) have been damaged. Fault detection shall
activate a flashing trouble light.
shall change state if any fault condition occurs.
‘0
d.
C. Externally mounted NSS units.
1. Indoors: TVSS units shall be provided with general purpose NEMA 1
enclosures.
Outdoors: TVSS units shall be provided with weatherproof NEMA 3R
enclosures.
2. Diagnostics shall be mounted on the cover of the enclosure and shall be
visible with the cover closed.
PART 3 - EXECUTION
3.01 Installation
A. Where the TVSS system is specified for installation as part of a new service
entrance section, main service switchboard, or distribution panel, all TVSS
system units shall be factory installed and connected within the service or
distribution panel enclosures.
B. Where the TVSS system is specified for installation as part of an existing
electrical system, Contractor shall install TVSS system equipment external to
existing panels. Installation shall be in accordance with the manufacturer’s
printed instructions and in accordance with the applicable portions of the NEC,
state, and local codes.
September 2003 Transient Voltage Surge Suppressor
Twin D Pump Station (860-3-TD) Contract 38891 1661 5-6
I
3.02
Externally mounted NSS equipment:
1.
i
Mount where indicated on the Drawings andlor as close as practical to
the panel bus.
2. Conductors shall be as short and straight as possible bedeen bus and
NSS unit.
3. Conductors size shall be minimum #IO. Provide larger conductors as
recommended by the manufacturer.
4. Contractor shall twist input conductors together to minimize conductor
impedance. I
5. TVSS system shall be connected to a ground system having measured
DC resistance of 25 ohms or less.
\ Start-up and Training
Manufacture's representative shall verify installation, provide start-up assistanca and
training of Owner's operations personnel, and provide written certification that the WSS
system has been properly installed and is ready for operation, and manufacturer's
warranties are in full effect.
I
END OF SECTION
September 2003 Transient Voltage Surge Suppressor Twin D Pump Station (860-3-TD) Contract 38891 1661 5-7
SECTION 17000
GENERAL INSTRUMENTATION AND CONTROL COMPONENTS
TECHNICAL SPECIFICATIONS
PART 1 - GENERAL
1.01 Description
The Contractor shall furnish, install, coordinate, design, fabricate, start-up, and place
into service instrumentation and controls for the project to provide complete and
operable systems as specified in the Contract Documents. The Contractor shall
provide and designate Electrical and Instrumentation Subcontractors to perform said
work. The Instrumentation Subcontractor shall be responsible to perform engineering
and design of control panels and components, select equipment and controls to
interface with various instrumentation and control equipment, package systems,
furnished and manufactured motor control centers, and instrumentation centers.
Instrumentation Subcontractor shall design and prepare or coordinate, preparation of
control and interconnect diagrams.
Instrumentation Subcontractor shall coordinate services of manufacturer's
engineering representatives for services during installation, start-up, operation, and '
instruction of Owner for instrumentation and control equipment.
'J
Instrumentation Subcontractor shall coordinate work so that all components of the
instrumentation system, including primary measuring, indicating, transmitting,
receiving, recording, totalizing, controlling, alarming devices, and all appurtenances
are completely compatible and shall function as specified, and shall furnish and install
such additional equipment and accessories to meet this requirement at no cost to the
Owner.
Electrical Subcontractor shall subcontract the work specified herein to a qualified
Instrumentation Subcontractor. All work performed is the responsibility of the
Contractor even though references are made herein to work requirements and
responsibilities of the Electrical and Instrumentation Subcontractors.
1.02 Performance Specifications and Drawings
Equipment controVmonitoring systems shall be furnished and installed to provide
equipment performance, operation control, and/or monitoring functions as specified
on Drawings in specific Equipment Technical Specifications, or in the System
Operation Description Technical Specifications. Control Schematic drawings, where
provided, show control loops and control panels with component locations.
Instrumentation Subcontractor shall prepare all wiring and control diagrams, and
computer programs, and furnish and install all instrumentation and control
components to provide said specified performance and operation.
November 2003
Twin D Pump Station (860-3-TD) Contract 38891
Instrumentation and Control
17000-1
I .03
1.04
Instrumentation and Control Components
Instrumentation and control components shall be as specified herein, per Technical
Specifications, Basic Electrical Specifications, and as shown on the Drawings or
manufacturer shop drawings where included in these Contract Document$. Not all
products specified herein are necessarily required for this project.
Submittals
All submittals shall be in accordance with the General Provisions, Section 2-5.3.
The Instrumentation Subcontractor shall prepare and submit, through the Contractor,
complete and organized shop drawings as specified herein. Interface between
instruments, motor starters, control valves, variable speed drives, chemical analyzers,
flow meters, chemical feeders, Owner furnished equipment, and other equipment
related to the instrumentation and control system, shall be included in the shop
drawing submittals.
Shop drawings prepared by the MCC, VFD, and other electrical equipment suppliers
shall be reviewed and approved by the Instrumentation Subcontractor. Said
subcontractor shall date and sign shop drawings prior to submittal to the Owner for
review. I
Shop drawings shall be submitted in complete bound sets indexed by specification
and description of the items being submitted. Manufacturer's specification or data
sheets shall be clearly marked to delineate the options or styles to be furnished. Only
complete systems, not pieces of equipment from various systems shall be subhitted.
Submittals shall show dimensions, physical configurations, methods of connecting
instruments and control equipment together, mounting details, single loop system
drawings, and wiring schematics in conventional ladder diagram form. Control
program for programmable controllers (if specified) shall be submitted in conventional
ladder diagram form with complete labeling and comments. Fabrication data,
nameplate, legends, and control panel internal wiring, including material
specifications, shall be Submitted.
'1
Submit data for each item of equipment which summarizes the specified features and
include such other necessary data as would provide a complete specification for
reordering an exact duplicate of the original item from the manufacturer.
Submit, for approval, a written plan for demonstrating that each system of equipment
meets the specified operational requirements. Submit a written plan for procedures to
be used in final operation testing of entire systems. As-built drawings and operation
and maintenance manuals shall be Submitted.
November 2003
Twin D Pump Station (860-3-TD) Contract 38891
Instrumentation and Control
17000-2
1.05 Quality Assurance
L A. Qualification and Manufacturers
Instrumentation Subcontractor shall have been regularly engaged in providing
similar equipment on a single system responsibility basis for municipal water
and wastewater projects of similar or larger magnitude. Pers nnel employed
shall be regularly employed and trained by the Instrumentation Subcontractor.
The Instrumentation Subcontractor shall be responsible for the technical
supervision of the installation to ensure that it is proper in all respects.
for system engineering, supervision, start-up, operational testi $ g, and training
I B. Standard of Quality
Equipment of the types and sizes specified which has been demonstrated to
operate successfully shall be furnished. Substitution of equivalent equipment
will . be permitted as specified per Contractor Submittals Technical
Specifications.
Coordination with Electrical Subcontractors and Sumliers
Prior to installation of any conduit the Instrumentation Subcontractob shall
verify conduit size and conduit runs with the Electrical Subcontractor, and
equipment suppliers for specific equipment to be furnished, and notify the
Owner of any conflicts or deviations prior to installation.
1,
I C.
D. Instrumentation Subcontractor's Certifications
Prior to start-up and initial operation of instrumentation and confrd equipment,
the Instrumentation Subcontractor shall submit a written report stating that
equipment has been coordinated, calibrated, properly installed, and is ready
for start-up. After start-up and when equipment is ready to be operated, the
Instrumentation Subcontractor shall submit a written report for the
instrumentation and control equipment and associated field instruments
certifying that the equipment is ready to be operated, is safe to operate and
has been checked, inspected, calibrated, and adjusted as necessary; has
been operated under maximum power variation conditions and operated
satisfactorily; and is fully covered under the terms of the guarantee.
PART 2 - PRODUCTS
2.01 General
A. Where shown on the Drawings, specified by Special Requirements or
Technical Specifications, or required by the specified equipment operation per
System Operation Description Technical Specifications, the instrumentation
and control components shall be as specified herein. Products not necessary for this project are identified herein as "Not Required,'.
November 2003 Instrumentation and Control
Twin 0 Pump Station (860-3-TD) Con tract 3889 1 17000-3
0 B. All meters, instruments, and other components shall be the most recent field
proven models marketed by their manufacturers at the time of submittal of the
shop drawings.
C. All panel mounted instruments shall have matching style and general
appearance. Instruments performing similar functions shall be of the same
type, model, or class, and shall be of one manufacturer.
D. All outdoor instrumentation shall be suitable for operation in the ambient
conditions at the equipment installation locations. Heating, cooling, and
dehumidifying devices shall be incorporated with the outdoor instrumentation
in order to maintain it within its rated environmental operating ranges. The
Contractor shall furnish and install all power wiring for these devices (e.g.,
heaters, fans, etc.). NEMA rated outdoor enclosures suitable for the
environment shall be furnished.
E. All instrumentation in hazardous areas shall be intrinsically safe and shall be
approved for use in the particular hazardous (classified) location in which it is
to be installed.
Analog measurements and control signals shall be electrical as indicated ,
herein, and shall vary in direct linear proportion to the measured variable,
except as noted. Electrical signals outside control board(s) shall be 4 to 20
milliamperes DC except as otherwise noted.
I ',
F.
2.02 Control Panels
Unless otherwise specified or shown on the Drawings, indoor control panels shall be
NEMA Type 12 enclosures and outdoor control panels shall be NEMA Type 12
enclosures with drip shields for rain tight construction. Enclosures shall be single or
double door, single or dual access as shown on the Drawings. As a minimum, each
enclosure shall be furnished with interior back panels, and padlockable door handles.
Free standing control panel enclosures shall be as manufactured by Hoffman, Robroy
Industries, Inc., or equal and shall be securely anchored to the floor with a minimum
of four stainless steel anchor bolts in each section. Free standing control panel
enclosures 72" and less in height shall be provided with floor stand kits (12" height,
minimum).
Surface or wall mounted enclosures shall be as manufactured by Hoffman, Robroy
Industries, Inc., or equal and shall be anchored to the wall with a minimum of four 3/8
inch diameter stainless steel anchor bolts.
Where control panels are part of the MCC line up, they shall match the MCC
equipment in height, depth, and color.
November 2003
Twin D Pump Station (860-3-TD) Contract 38891
Instrumentation and Control
17000-4
2.03 General Instrumentation Enclosure Components and Requirements
A. General
General electrical components shall be as shown on the Drawings and
specified in the Basic Electrical Specification, Equipment Technical
Specifications, System Operation Description Technical Specifications, and
herein.
B. Siqnal Isolators, Converters, and Power SuDDlies
Signal isolators shall be furnished and installed in each measurement and
control loop, wherever required to ensure adjacent component impedance
match, or where feedback paths may be generated. Signal converters shall
be included where required to resolve any signal level incompatibilities. Signal
power supplies shall be included, as required by the manufacturer's
instrument load characteristics, to ensure sufficient power to each loop
component.
C. Namedates
'
'J I
Nameplates shall be provided for instruments, function titles for each group of
instruments, and other components mounted on the panel fronts as shown on
the drawings. A nameplate shall be provided for each signal transducer,
signal converter, signal isolator, electronic trip, and the like, mounted inside
the panel(s). These shall be descriptive, to define the function and system of
such element. These nameplates shall be of the same material as those o'n
the panel fronts. Nameplates shall be fabricated from laminated engraving
plastic. Nameplates shall be fabricated from VI-LAM, Catalog No. 200,
manufactured by N/P Company, or equivalent by Formica, or equal. Colors,
lettering, styles, and sizes shall be as shown on the drawings or as selected
by the Owner. Adhesives are not acceptable for attaching nameplates.
Nameplates shall be attached with stainless steel fasteners.
D. Terminal %locks
Terminal blocks shall be molded plastic with barriers and box lug terminals,
and shall be rated 15 amperes at 600-Volts. White marking strips, fastened
securely to the molded sections, shall be provided, and wire numbers or circuit
identifications shall be marked thereon with permanent marking fluid.
E. Sianal and Control Circuit Wirinq
1. Wire TYDe and Sizes
Where conductors are within the control panel, they shall be flexible
stranded copper machine tool wire; these shall be UL listed Type MTW
and shall be rated 600-Volts minimum 14 AWG. Shielded cables shall
be No. 16 AWG minimum as manufactured by Belden, Carol Cable
Co.,.or equal. Where conductors are run to MCC sections or to field
November 2003 Instrumentation and Control
Twin D Pump Station (860-3-TD) Contract 38891 17000-5
locations, they shall be minimum 12 AWG of the UL type specified on
the Drawings or by the Basic Electrical Specifications.
2. Wire Insulation Colors
Conductors supplying 120-Volts AC power on the line side of a
disconnecting switch shall have a black insulation for the ungrounded
conductor. Grounded circuit conductors shall have ite insulation.
be red. All wires energized by a voltage source external to the Control
Board(s) shall have yellow insulation. Insulation for all DC conductors
shall be blue.
Insulation for ungrounded 120-Volt AC control circuit 3 nductors shall
3. Wire Termination
Conductors from field componenets or from MCC sections shall
terminate in the control panels at terminal blocks. Control circuit wiring
shall connect from terminal blocks to relays, controls, , and
programmable controllers.
4. Wire Markinq
Each signal, control, alarm, and indicating circuit conductor codected
to a given electrical terminal point shall be designated by a single
unique number which shall be shown on all shop drawings. These
numbers shall be marked on all conductors at every terminal.. using
white numbered wire markers which shall be plastic-coated cloth,
Brady Type B-500, Thomas and Betts "E-Z Code," or equal, or shall be
permanently marked heat-shrink plastic. ,
F. Forced Air Ventilation System
Forced air ventilation system, thermostat controlled, shall include the
following:
1. Intake Louvers
Design air louver plate kits with design air filters to fit and one can of
spray adhesive, or equal. Intake louvers shall be sized to provide
maximum air velocity of 500 feet per minute.
2. Air Exhauster
Air exhauster shall be Dayton centrifugal type suitable for 110 volt
power with discharge duct and screen, or equal. Locate exhauster at
top or top side of panel. Exhauster shall be sized to provide minimum
of 15 air changes per hour at static pressure of 0.25 inches or that
created by system, which ever is greater.
November 2003
Twin D Pump Station (860-3-TD) Contract 38891
Instrumentation and Control
17000-6
3. Thermostat
2.04
2.05
2.06
Thermostat shall be line voltage Dayton attic fan type, or equal with
15°F differential to turn on at 105°F and off at 90°F.
Manufacturerlsupplier shall submit data to support ventilation equipment
selection.
Solenoid Valves
1
i
Solenoid valves shall be packless construction, two-way, three-way, or four-way as
required, and shall be correctly sized for the application, unless specifically sized on
the Drawings. They shall be for normally energized or de-energized operation as
shown on the Drawings. Valve bodies shall be forged brass unless otherwise
recommended by the manufacturer for a particular application. The solenoids shall
be rated for continuous operation at 115% of rated voltage. They shall be AC or DC
current operated as specified or required. AC current coils shall have a shading ring.
DC current operated coils shall be provided with a spark suppression device. If this
device polarizes the coil, a reverse polarity protection diode shall be proviPed to
prevent damage in the event of accidental reverse voltage application. Polarity:of the
coil shall be clearly marked on the terminals. All coils shall be housed in NeMA 4
cases with provision for 1 /2" electrical conduit connection. \
Thermostats
Thermostats shall be single stage or two stage (as required) cooling, line voltage
type, 120 V with contacts rated minimum 16 amps and minimum 3"f differential and
setting range 30°F to 100°F. Thermostats shall be heavy duty, rated for minimum 3/4
horsepower motor starting, and shall be as manufactured by Dayton, 'Honeywell, or
equal.
Conductance Liquid Level Measurement System
Each conductance liquid level measurement system shall consist of level sensors,
connection fitting, and relays as shown on the Drawings and specified herein.
Contractor shall furnish and install all material and appurtenances as necessary to
provide a complete liquid level measurement system.
Level sensors shall be conductance type, utilizing electrodes and the conductivity of
the process fluid itself to measure level. The system shall be equipped with multiple
level sensing electrodes and one ground electrode. The number and lengths of level
sensing electrodes shall be as shown on the Drawings. Unless specified otherwise,
the electrodes shall be constructed of 31 6 stainless steel and shall be provided with
PVC heat shrink sheathings.
Each connection fitting shall be pressure-tight, and suitable for connection to the
flanged top outlet of a pressure vessel. Connection fitting shall be provided with an
integral epoxy coated aluminum terminal housing and 31 6 stainless steel electrode
couplings. The number of electrode couplings shall accommodate the number of
Novern ber 2003 Instrumentation and Control
Twin D Pump Station (860-3-TD) Contract 38891 17000-7
level-sensing electrodes shown on the Drawings and required grounding electrode.
Connection fitting flange shall be constructed of 316 stainless steel, and shall be
rated for a minimum working pressure of 230 psig at 100°F. Contractor shall
coordinate the size of the pressure vessel top outlet flange with the connection fitting
flange provided by the level measurement system manufacturer.
0
Liquid level measurement system relays shall be solid-state, plug-in modules suitable
for 1 I-pin octal sockets. Relays shall be general purpose, single level or differential
service, with DPDT dry contacts rated for 5A (minimum) at 120 VAC. Relays shall be
suitable for operation on 120 VAC primary voltage with 12 VAC secondary voltage.
Conductance liquid level measurement system shall be as manufactured by Warrick
Controls Inc., Gems Sensors Inc., or equal.
2.07 Timers
Timers for ventilation equipment shall be 0 to 24 hour type with tabs permitting 15
minute interval settings. Timers shall be 120 V, 60 Hz, single phase, with contacts
rated at a minimum of 5 amps when operating control circuit for 3 phase equipment or
rated to start minimum 1 horsepower motor when starting equipment motor directly.
'
,
2.08 Pressure Gauges
Unless otherwise shown or specified, pressure gauges shall be weatherproof and
provided with 4-1/2" dials, 1/4" threaded connections, epoxy coated aluminum cases
with safety glass windows, 316 stainless steel shut-off valves, 316 stainless steel
pulsation dampeners (except where diaphragm seals are required), and 31 6 stainless
steel close nipples. Bourdon tubes, bellows or diaphragm, and socket and tip shall be
316 stainless steel. Gauges subject to shock or vibration shall be wall mounted or
attached to galvanized channel floor stands and connected to equipment by flexible
connectors.
Gauges shall be calibrated to read in applicable units, with an accuracy of *I%, to
150% of working pressure or vacuum of the monitored medium.
Pressure gauges shall be as manufactured by Ashcroft, Marsh, U.S. Gauge, or equal.
2.09 Diaphragm Seals
Where shown on the drawings or specified elsewhere, diaphragm seals shall be
provided between the process medium and the pressure sensing element (e.g.
gauge, transmitter, or switch). Unless otherwise specified, diaphragm seals shall
have 316 stainless steel diaphragms and bottom housings. Bottom housings shall be
provided with 1/4" flushing connection, 316 stainless steel shut-off valve, and 316
stainless steel close nipples.
Diaphragm seals shall be as manufactured by Ashcroft, Marsh, or equal.
Novern ber 2003 Twin D Pump Station (860-3-TD) Contract 38891
-
Instrumentation and Control
17000-8
2.10 Pressure and Differential Pressure Switches
Pressure and differential pressure switches shall utilize bourdon tubes, diaphragms,
or bellows as the sensing/actuating element. Unless otherwise specified, the
sensinglactuating element material shall be 316 stainless steel. The set point shall
be readily field adjustable over the range specified. Switches shall have deadband
adjustable up to a maximum of 100% of switch range. Switches shall be SPDT, rated
for 15A at 120 VAC. Switch enclosures shall be rated NEMA 4X. Process
connections shall be 1/4" or 112" NPT, and shall be provided with 316 stainless steel
shut-off valves, 31 6 stainless steel pulsation dampeners (except where diaphragm
seals are required), and 31 6 stainless steel close nipples.
0
Pressure switches and differential pressure switches shall be as manufactured by
Ashcroft, Allen-Bradley, or equal.
2.1 1 Pressure Transmitters
Pressure transmitters shall be electronic two wire devices with the following features:
adjustable span, zero and damping adjustments, integral indicator scaled in ,
engineering units, solid state circuitry and 4-20 mA output. Accuracy shall be &0.25%
of span. Overrange capacity, without affecting calibration, shall not be less than '
150% of maximum range. Process wetted materials shall be 316 stainless steel.
Body material shall be 316 stainless steel. Process connections shall be 1/4" or 1/2"
NPT, and shall be provided with 316 stainless steel shut-off valves, 316 stainless
steel pulsation dampeners (except where diaphragm seals are required), and 316
stainless steel close nipples. Fill fluid, unless otherwise specified, shall be silicone oil.
Transmitter housing shall be epoxy coated low copper aluminum alloy and rated
NEMA 4X.
Pressure transmitters shall be as manufactured by Rosemount, Foxboro, or equal.
2.12 Differential Pressure Transmitters
Differential pressure transmitters shall be electronic two wire devices with the
following features: adjustable span, zero and damping adjustments, integral indicator
scaled in engineering units, solid state circuitry and 4-20 mA output. Accuracy shall
be *0.25% of span. Overrange capacity, without affecting calibration, shall not be
less than 150% of maximum range. Span shall be field adjustable over at least a 4 to
1 range. Process wetted materials shall be 316 stainless steel. Body material shall
be 316 stainless steel. Process connections shall be 1/4" or 1/2" NPT. Fill fluid,
unless otherwise specified, shall be silicone oil. Transmitter housing shall be epoxy
coated low copper aluminum alloy and rated NEMA 4X. A three (3) valve manifold
shall be provided with the transmitter. Manifold wetted surface materials shall be 316
stainless steel.
Pressure transmitters shall be as manufactured by Rosemount, Foxboro, or equal,
Twin D Pump Station (860-3-TD) Contract 38891
Instrumentation and Control
17000-9
2.1 3 Ultrasonic Liquid Level Measurement System
A. General
Where ultrasonic type level system is specified in the Special Cohstruction
Provisions or shown on the Drawings, the liquid level measurement system
shall be of the ultrasonic type and shall consist of a microprocessor based
electronic controller, a non-contacting transducer, and cable fr' m transducer
to controller.
processing, and transmitting ultrasonic signals. All operating parameters shall
be entered via the controller keypad. The controller shall, upon demand,
display current head, temperature, and distance from transducer to liquid
level. The liquid level measurement system shall be Multi-Ranger Plus as
manufactured by Milltronics, Inc., FMU 860 as manufactured by Endress
Hauser, or approved equal.
The electronic controller shall be capable P of receiving,
I
6. Service
The transducer shall be capable of submergence without degradation.
Transducer shall function over an ambient temperature range of -49 "F to
200°F, and shall be rated by FM and CSA for Class I and II hazardous
environments. Controller shall function over an ambient temperature rahge of 15°F io 122°F. 'I
C.
D.
Performance
The transducer shall transmit and receive an acoustic signal to accurately
measure liquid level over a range of 0 to 40 feet. Point of zero reference shall
be operator adjustable. The output signal shall be proportional to level from 0
to 100% with a resolution of *0.1%.
Features
I
1. Controller shall be provided with output indicating meter with four
character LCD display programmable in engineering units of: feet,
inches, or percent of span.
2. Interconnecting Cable: Cable between transducer and controller shall
be supplied with unit, maximum system length 1,000 feet. Contractor
shall verify length of cable required for each specific installation.
3. Discrete Outputs: Controller shall provide up to five discrete outputs,
each adjustable over entire scale range.
4. Alarms: Alarms shall be programmable for level, rate of change of
level, differential level, or loss of echo.
5. Alarm Messages: Loss of echo and cable circuit open orshorted.
November 2003 Instrumentation and Control
Twin D Pump Station (860-3-TD) Contract 38891 17000-1 0
0
2.14
2.1 5
E. Controller Interface
1. Controller Output: 4-20 ma DC output, current isolated,
maximum of 600 ohms (return to ground). 1
2. Power Supply: Unit shall operate on 120 V, 60 Hz power,
otherwise specified. i
into a
unless
3. Discrete Outputs: form "C" SPDT relays, 5 amps (continuous), non-
inductive, 250 VAC.
F. Controller Enclosure
Controller shall be mounted in a NEMA 4 enclosure, unless' otherwise
specified. Enclosure shall be wall mounted, unless otherwise specified.
Exposed controllers shall be provided with hot dip galvanized, sheet metal (24
gauge, minimum) sun shields. Sun shields shall be open at the front and
bottom, and shall be of sufficient size to allow access to controller for
operation and maintenance. Free edges shall be rolled. Sun shields shall be
constructed without sharp edges and comers. \
'I
Control Valve Limit Switches
Control valve limit switch assemblies shall provide remote indication of valve opening
and closing. Limit switches shall be single pole, double throw type, with weatherproof
enclosures. Limit switches shall be rated 15A at 120/240 VAC. Contractor shall
review each control valve installation and shall determine the necessary limit switch
accessories. Contractor shall furnish and install all limit switches, and accessories
necessary for a complete and operable system.
Control valve limit switch assemblies shall be as manufactured by CLA-VAL
Company.
Electrical Service Power Failure Protection System
The electrical service power failure protection system consists of an electronic device
which provides protection against three-phase electrical motor loss due to power
failure conditions. Power failure conditions include: low voltage, phase loss,
unbalanced voltage and phase reversal. The power failure protection device shall be
Model EAC-800 as manufactured by Watsco Components Inc., MotorSaver Model
250A as manufactured by SymCom, Inc., or equal.
Contractor shall install the power failure protection system as shown on the Drawings
or specified in the Technical Specifications. The protection system shall monitor
electrical line side power of specified equipment or facilities. The power failure
protection system shall automatically stop all electrical motors upon output reiay
deactivation (unstable power conditions) and shall transmit a power failure alarm
signal to the local RTU (where specified).
November 2003 Instrumentation and Control
Twin D Pump Station (860-3-TD) Contract 38891 17000-1 1
PART 3 - EXECUTION
3.01 General
The Instrumentation Subcontractor shall perform work and provide services as
specified herein and per Basic Electrical Specifications. It is the general intent of this
Contract that furnishing all equipment instrumentation and controls; all field wiring,
conduit installation, and wiring external to the MCC, control panels and electrical
equipment shall be furnished and installed by the Electrical Subcontractor. It is
intended that the design or the coordination of design of controls within motor control
center(s) and control panels and compatibility of design with equipment and
equipment systems and programming of programmable controllers and control
system start-up shall be the responsibility of the Electrical and Instrumentation
Subcontractors.
The Instrumentation Subcontractor's attention is directed to the electrical and
mechanical details of this project. Referral to these portions of the Contract
Documents shall be required in order to understand the full intent and scope of work ,
required.
Control Panel Signal And Control Circuit Wiring 3.02
A. Wirina Installation
All wires within control panels shall be run in plastic wireways. Wiring run from
components on a swing-out panel to other components on a fixed panel shall
be made up in tied bundles. These bundles shall be tied with nylon wire ties,
and shall be secured to panels at both sides of the "hinge loop" so that
conductors are not strained at the terminals.
Wiring run to control devices on the front panels shall be tied together at short
intervals with nylon wire ties and secured to the inside face of the panel using
epoxy adhesive, T & B or Panduit. Standard adhesive mounts are jmJ
acceptable.
Wiring to rear terminals on panel-mount instruments shall be run in plastic
wireways secured to horizontal brackets run above or below the instruments in
about the same plane as the rear of the instruments.
Conformance to the above wiring installation requirements shall be reflected
by details shown on the shop drawings for the Owner's review.
B. Wire Marking
Each signal, control, alarm, and indicating circuit conductor connected to a
given electrical point shall be designated by a single unique number which
shall be shown on all shop drawings. These numbers shall be marked on all
November 2003 Instrumentation and Control
Twin D Pump Station (860-3-TD) Contract 38891 17000-1 2
conductors at every terminal using white numbered wire markers. which shall
be plastic-coated cloth, or permanently marked heat-shrink plastic.
i 3.03 Installation, Calibration, Testing, Start-up, And Instruction
A. General
Under the supervision of the Instrumentation Subcontract d r, all systems
specified herein shall be installed, connected, calibrated, tested, and started in
coordination with the equipment manufacturer and the Owner. This shall
include final calibration in concert with equipment specified elsewhere in these
Contract Documents.
B. Factory Testina of Control Panels
Instrumentation Subcontractor shall verify wiring continuity and panel
operation by simulated inputs and outputs to assure controls are operable and
meet the requirements of these Specifications.
C. Manufacturer's Enaineerina Rewesentative !
The services of manufacturer's engineering representative especially tra'ined
and experienced in the installation of the equipment shall be provided to
supervise the installation, be present when the instruments and equipment are
first put into operation, and inspect, check, adjust as necessary, and cqlibrate
the instruments. All costs for representative's services shall be included in the
Contract Price.
D. Certify Proper Installation b
After all installation and connection work has been completed, the
Instrumentation Subcontractor shall check it all for correctness, verifying
polarity of electric power and signal connections, making sure all process
connections are free of leaks, and all other similar details. The manufacturer's
representative shall certii in writing to the Instrumentation Subcontractor that
for each loop or system checked out, that equipment is installed properly and
ready for start-up. See item 1.05D herein for Instrumentation Subcontractor's
Certification.
E. Calibration
All instruments and systems shall be calibrated after installation, in
conformance with the component manufacturer's instructions by the
Instrumentation Subcontractor and manufacturer's representative. Those
components having adjustable features shall be set for the specific conditions
and applications of the project, and shall be within the specified limits of
accuracy. Elements and equipment which cannot achieve proper calibration
or accuracy, either individually or within a system, shall be replaced.
November 2003 Instrumentation and Control
Twin D Pump Station (860-3-TD) Contract 38891 17000-1 3
F. Start-UD and Instruction
When all systems have been assessed by the Contractor to have been
successfully carried through complete operational tests with not less than a
minimum of simulation, and the Owner concurs in this assessment, plant start-
up can follow. Fifteen days (minimum) prior to start-up, Owner's operating
and maintenance personnel shall be instructed in the functions and operation
of each system and shall be shown the various adjustable and set point
features which may require readjustment, resetting or checking, recalibration,
or maintenance by them from time to time. Instruction shall include
interactions of the systems, operations, shutdowns, alarms, failure, and
controls. This instruction shall be scheduled at a time arranged with the
Owner at least two weeks in advance. Instruction shall be classroom type for
minimum of four hours or as required by the Special Requirements or Special
Construction Provisions for instrumentation and controls. Instruction shall be
given by the Instrumentation Subcontractor and other qualified persons who
have been made familiar in advance with the systems in this plant.
November 2003
Twin D Pump Station (860-3-TD) Contract 38891
Instrumentation and Control
17000-1 4
SECTION 17210
MAGNETIC FLOW METER
TECHNICAL SPECIFICATIONS
PART 1 - GENERAL
1.01
1.02
General Requirements
Contractor shall furnish and install magnetic flow meters and all appurtenant materials,
equipment, and work suitable for the services listed, complete and operable in
accordance with requirements of the Contract Documents and in conformance with the
manufacturer's recommendations. Upon completion of installation, the work shall be
tested to demonstrate compliance with the specifications.
Submittals
All submittals shall be in accordance with the General Provisions, Section 2-5.3.
,
A. ShoD Drawinas
Contractor shall submit shop drawings in accordance with the Contractor
Submittals Technical Specification and shall include, but not be limited to, the
following:
1. Details of all components of all meters including detailed installation
instructions.
Electrical schematics and instrumentation specifications. 2.
3. Meter cable.
4. Manufacturer's application performance guarantee for each meter
location, and recommendations for installation at each location.
6. ODeration and Maintenance Manual
Contractor shall submit a detailed operation and maintenance manual for the
flow metering system(s) specified herein.
PART 2 - PRODUCTS
2.01 Magnetic Flow Meter
A. Desian and Construction
The magnetic flow meter shall use characterized electromagnetic introduction to
produce a voltage linearly proportional to the average flow rate. Each magnetic
flow meter shall be microprocessor based, and utilize D.C. bipolar pulsed coil
excitation, automatically re-zeroing after every cycle. The sensor shall be carbon
September 2003
Twin D Pump Station (860-3-TD) Contract 38891
Magnetic Flow Meter
17210-1
steel tube, carbon steel flanged, and polyurethane lined, with a nominal diameter
as listed herein.
External surfaces shall be factory finished with a high build epoxy paint' or better
for corrosion prevention. The flow meter electrodes and built in grounding
electrodes shall be Type 316 stainless steel. If built in grounding is not provided
Type 316 stainless steel grounding rings shall be mounted in e ch end of the meter. 1
The preamplifier input impedance shall not be less than lo1 ohms and shall be
capable of operating with a power supply of 120 volts *lo%, 60 hz *5% and
power consumption shall not exceed 11 VA. The sensor shall be NEMA 4X,
accidental submergence proof (30 W48 hours) and certified for use in' Class 1,
Division 1, Groups B, C, and D.
Accuracy of the flow meter system shall be *l% of rate above 1 fps and *0.1%
of full scale below 1 fps. Accuracy shall be verified by calibration ins a flow
laboratory traceable to the U.S. National Bureau of Standards. The meter shall
incorporate an empty pipe detection feature which shall cause the meter to
register zero flow when the sensor is not full. Where shown on the Drawings,
the meter shall include a positive zero circuit to register zero flow when puhping units are not operating. \
B. Schedule of Maqnetic Flow Meters
Magnetic flow meters shall be provided as follows:
Nominal Pressure Flow
Location Service Dia. Rating ' Range
(inches) (psi) (gpm)
Discharge Header Recycled 16" 150 0 to 6000
Water
2.02 Signal ConverterITransmitter
Signal converter shall be provided for each meter for meter mounting or remote
mounting as shown on the Drawings. Interconnecting cable of adequate length shall be
provided by the meter manufacturer. The converter shall be NEMA 4X, accidental
submergence proof (30 W48 hours) and certified for use in Class 1, Division '1, Groups
B, C, and D (unless specified for panel mounting). Signal converter shall be designed
for out-of-door use and exposed to the sun light. If the display must be protected from
the sun the converter shall be furnished with an enclosure or sun shield.
Signal converter shall provide a 16 character alphanumeric display indicating flow units
as specified herein and total flow in Cubic Feet X100.
Features allowing menu selection, calibration, and program changes to be made from
outside the housing shall be incorporated.
September 2003 Twin D Pump Station (860-3-TD) Contract 38891
Magnetic Flow Meter
1721 0-2
0 It shall produce a 4-20 mA DC output signal into a minimum load of 800 ohms, linear to
flow, and scaled pulsed output to permit operation of a flow recorder. L
The signal converter shall be suitable for out-of-doors installation, wall mounting, or
flush mounting within panel door as shown on the Drawings.
Where specified or shown on the Drawings, a remote flow indicator &all be panel
mounted in the main control panel.
\
2.03 Manufacturer
I Magnetic flow meters shall be the product of Sparling Instrument Co. Inc.., aABB, or
equal. Manufacturers shall modify or supplement standard equipment to provide
features as specified herein. I
PART 3 - INSTALLATION
Installation of magnetic flow meters and signal convertersltransmitrs shall be in accoFance
with manufacturer's written instructions. Manufacturers shall guarantee equipment against
defects in material and workmanship for a period of two years from date of project acceptahce.
The instrumentation subcontractor shall coordinate with the manufacture to provide suitable sun
shield or enclosure to protect the meter and signal converter in the location (environment)
shown on the drawings.
\
e
September 2003
Twin D Pump Station (860-3-TD) Contract 38891
Magnetic How Meter
1721 0-3
SECTION 17310
SECURITY AND SMOKE DETECTION EQUIPMENT
TECHNICAL SPEC IFlCATl ON S
PART 1 - GENERAL
1 .Ol Description
Contractor shall furnish and install security and smoke detection equipment as specified
herein and as shown on the Drawings to sense a security violation or the presence of
smoke or heat and cause an alarm and signal for remote telemetry. System shall be
complete with sensors and control modules.
1.02 Specific Project Requirements
I Smokedetector sensors shall be installed in the Equipment Building as shown on the
Drawings. Security detection shall be provided with magnetic sensors (door switches) at
each Equipment Building door and a wall mounted motion detector sensor as shown on
the Drawings.
,
One control module shall be provided to indicate security breach. Alarm detection shall
activate individual alarm light on the module for smoke and for each door or motion
detector for security. One common alarm light shall be mounted in the main control
panel. One dry alarm contact for smoke and one dry contact for security on the control
module shall provide signals to the telemetry system.
1.03 Submittals
Contractor shall submit shop drawings and catalog cut sheets in accordance with the
General Provisions to show complete details, components, description, and wiring.
1.04 Quality
All equipment furnished shall be of current design and manufacture that has been
utilized in similar applications and environments. Manufacturers shall be as specified for
various components. Equipment shall be U.L. listed, components shall meet the
requirements of NFPA 72A, 6, and C, and be approved by the State of California Fire
Marshall (CFM) whether or not the system is only security and not smoke (fire).
PART 2 - PRODUCTS
2.01 Detector Control Module
Detector control module(s) shall be an expandable type furnished suitable to operate the
number of sensors per zone or sensors per location specified or shown on the Drawings
and display alarm signal for each zone or location. Modules shall be powered by 120
VAC single phase 60 Hz input power, be provided with alarm light and reset for each
zone or each location, reduced voltage transformer for 12 or 24 VDC power to sensors,
November 2003 Security and Smoke Detection Twin 0 Pump Station (860-3-TD) Contract 38891 1731 0-1
standby batteries, and battery charger. Voltage of module(s) and sensors shall be
compatible
LED indicators and associated sensors for AC power on, system trouble, zohe alarm,
zone trouble, location alarm, low battery, ground fault, and alarm circuit trouble shall be
provided. Switches for system reset, sound silence, and zone or location walk test shall
be provided.
Remote contacts for remote alarm indication suitable for 120 VAC, 10 AMP; contacts
with output power (12 or 24 VDC) to activate an alarm bell; contacts for operation of
remote sprinkler system, and dry contacts to operate remote exterior light shall be
provided.
i
I The control module(s) shall be lntelliguard Model 5505 as manufactured by Honeywell
or equivalent equipment manufactured by Electro Signal Lab, Inc., Alarm Jndustry
Products, or equal.
2.02 Smoke Detector Sensors
Photoelectric type ceiling mount smoke detector sensors suitable for operation od, 12 or
24 volt D.C. power from the control module shall be furnished and installed as shobn on
the Drawings. Sensors shall be furnished with 30 mesh insect screen, shielded
electronics, indicators for power on and alarm and a test switch. Detectors shall be
Honeywell Model 200, Alarm Industry Products, or equal.
Smoke detector sensors shall be activated by smoke activating an alarm signal
calibrated for 2% to 3% gray smoke obscuration. In addition, sensors shall be equipped
with an integrated heat detector, such that an alarm signal is activated at 135°F.
*,
2.03 Security Sensors
Security sensors shall be magnetic type contacts provided at doors and windows or
infrared motion type as specified herein and shown on the Drawings and shall operate
on power provided from the control module.
Magnetic sensors shall be suitable for type of door or window being secured. Hinged
door types shall be recessed into the door and door jamb at top. If'being installed on
existing metal frame that has been grouted in place, a surface mount type may be
provided if approved by Owner. Detector shall be 1075 Series for wood door and jamb,
or 1078 Series for metal door and jamb as manufactured by Sentrol, Inc., or equal
biased type. Roll up type doors and windows shall be provided with surface mount 2500
series or equal biased type.
Motion detector sensors shall be U.L. approved dual passive infrared Model 774'1 as
manufactured by Honeywell, or equal. Unit shall be furnished complete with swivel
mounting hardware. Features shall include four sensing elements where
thermaVdetection change can be verified by an adjacent motion detector to activate an
alarm. The range shall be based on specified location of the detector.
November 2003 Twin D Pump Station (860-3-TD) Security and Smoke Detection 1731 0-2 Contract 38891
2.04 Alarm Bell or Light ~-
An alarm bell or red alarm light as shown on Drawings suitable for mounting od exterior
of building and compatible with operation by the control module shall be provided to
signal an audible or visible alarm. Where shown on the Drawings, separate alarm bell
or lights.
c.:
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2.05 Spare Parts
Spare parts shall include two of each size fuse and one extra smoke detector sensor
and motor detector sensor.
I PART 3 - EXECUTION
I
3.01 General
The security and smoke detection system shall be installed and tested as shown on the
The Contractor shall arrange to have the manufacturer or supplier ob the
equipment furnished under this Section, furnish the services of compbtent
factory-trained personnel to supervise the installation and start up on all
equipment. Allowance for this service shall be included by the manufacturer in
the price of his equipment. Installation and erection of all assemblieq and
components shall be in accordance with the details indicated on the Drawings,
approved shop drawings, and the printed instructions of the manufacturer. '
Drawings and specified herein: \
A.
B. After installation, the systems shall be put through all operations. . '
3.02. Instruction
After the equipment has been installed, tested, and adjusted, and placed in satisfactory
operating condition, the equipment manufacturer shall provide class room instruction to
Owner's operating personnel in the use and maintenance of the equipment. One (1)
hour of instruction shall be provided unless otherwise specified. Contractor shall 'give
the Owner formal written notice of the proposed instruction period at least two weeks
prior to commencement of the instruction period. Scheduled training shall be at a time
acceptable to the Owner and the manufacturer. During this instruction period, the
manufacturer shall answer any questions from the operating personnel. The instruction.
period shall be as long as necessary to address details of operation, routine
maintenance, repair, and special equipment features.
c
November 2003 Twin D Pump Station (860-3-TD)
Security and Smoke Detection Contract 38891 1731 0-3
APPENDIX A
RESIDENT NOTIFICATION EXAMPLE
L) APPENDIX “A”
RESIDENT NOTIFICATION EXAMPLE I
CITY OF CARLSBAD
CONSTRUCTION WORK
ABC CONTRACTORS
OFFICE # (760)m-=
FIELD # (760)xxX-XXXX
Dear resident:
As a part of the City of Carlsbad’s and Carlsbad Municipal
Water District’s ongoing program to maintain its water and
sewer facilities, your street will be closed to allow for pipeline
construction. This construction will require the closing of your
street to through traffic for X days. Your street, from XU Sf.
to XYZ Ave. will be closed to through traffic on:
MON. TUE. WED. THU. FRI.
DATE:
from 7:OOA.M. to 5:OO P.M.
If you don’t plan to leave your home by 7:OO A.M. on the
above date(s) please park your car on an adjacent street in
your neighborhood that will not be impacted.
ABC is the Contractor that will be performing the
construction work for the city and you may call them at
(76O)XXX-XXW if you have any questions regarding the
project. Mail delivery may be delayed if the postman cannot
reach the mailbox that day. If you have a moving company
scheduled for that day please call and inform the Contractor
of the date. If you have any concerns which cannot be
addressed by the Contractor, you may call the City’s
Engineering Inspection Department at 438-1 161 x4323.
better City of Carlsbad.
Thank you for your cooperation as we work to make a
_-
I/
APPENDIX B
CARLSBAD COASTAL DEVELOPMENT PERMIT
AND CONDITIONAL USE PERMIT
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A RESOLUTION OF THE PLANNING COMMISSION OF THE
CITY OF CARLSBAD, CALIFORNIA, APPROVING A
CONDITIONAL USE PERMlT TO CONSTRUCT AND
OPERATE A RECYCLED WATER PUMP STATION AND THE
THREE EXISTING WATER TANKS ON PROPERTY
GENERALLY LOCATED SOUTH OF POINSETTIA LANE ON THE EAST SIDE OF BLACK RAIL ROAD IN LOCAL
FACILITIEJS MANAGEMENT ZONE 20.
CASENAME: TWIN D RECYCLED WATER PUMP
STATION
CASE NO.: CUP 03-15
WHEREAS, the City of Carlsbad Municipal Water District, “Owner/
Developer,” has filed a verified application with the City of Carlsbad regarding property
described as
!
Parcels 1, 2 and 3 of Deed Document No. 116507, filed in the
Office of the County Recorder of San Diego County, State of
California on July 21,1958
(“the Property“’); and
WHEREAS, said verified application constitutes a request for a Conditional Use
P&t as shown on Exhibits “A” - “F“‘ dated October I, 2003, on file in the Carlsbad Planning
Department, TWIN D RECYCLED WATER PUMP STATION - CUP 03-15 provided by
Chapter 21.42 andor 21.50 of the Carlsbad Municipal Code; and
WHEREAS, the Planning Commission did, on the 1st day of October 2003, hold
a duly noticed public hearing as prescribed by law to consider said request; and
WHEREAS, at said public hearing, upon hearing and considering all testimony
and arguments, if any, of all persons desiring to be heard, said Commission considered all factors
relating to the Conditional Use Permit.
NOW, THEREFORE, BE IT HEREBY RESOLVED by the Planning
Commission of the City of Carlsbad as follows:
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i A) That the foregoing recitations are true and correct.
B) That based on the evidence presented at the public hearing, the Commission
based on the following findings and subject to the following conditions:
APPROVES TWIN D RECYCLED WATER PUMP STAPON -CUP 03-15,
Find,hes:
1.
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3.
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5.
That the requested use is necessary or desirable for the development of the community, is
essentially in harmony with the various elements and objectives of the General Plan, and
is not detrimental to existing uses specifically permitted in the zone in which the
proposed use is located, in that the 4.4-acre site currently accommoda& a large (8.5
million gallon) potable water tank, two 1.25 million gallon recycled water tanks, a
chlorine storage and injection facility, and a pressure reducing station. The
proposed recycled water pump station h addition to the existing facilities onsite
(two 1.25 MG recycled water tanks, one 8.5 MG potable water tank ahd chlorine
scrubber facility) will increase the efficiency of water delivery services \within the
city, including reclaimed water services. I
That the site for the intended use is adequate in size and shape to accommodate the use, in
that the site has adequate space for the location, operation and screening of tbe
proposed 792 square foot, 17.5-foot tall pump station and related surge tank which
will be 8 feet in diameter and 20 feet long without affecting the existing onsite water
tanks.
That all the yards, setbacks, walls, fences, landscaping, and other features necessary to
adjust the requested use to existing or permitted future uses in the neighborhood will be
provided and maintained, in that the site can accommodate the split block wall
designed pump station structure, surge tank and ornamental landscaping for
screening purposes.
That the street system serving the proposed use is adequate to properly handle all traffic
generated by the proposed use, in that Black Rail Road is a public street that will be
able to handle the traffic involved with this project since only Water District
personnel can access the locked and secured site. Traffic will be limited to City and
Water District staff.
The Planning Commission of the City of Carlsbad does hereby find
a. it had reviewed, analyzed and considered the Negative Declaration and the
environmental impacts therein identified for this project and any comments thereon
prior to RECOMMENDING APPROVAL of the project; and
b. the Negative Declaration has been prepared in accordance with requirements of the
California Environmental Quality Act, the State Guidelines and the Environmental
Protection Procedures of the City of Carlsbad; and
PC RES0 NO. 5443 -2-
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c. it reflects the independent judgment of the Planning Commission of the City of
Carlsbad; and
d. based on the EIA Part II and comments thereon, there is no substantial evidence the
project will have a significant effwt on the environment.
6. The Planning Commission has reviewed each of the exactions imposed on the Developer
contained in this resolution, and hereby finds, in this case, that the exactions are imposed
to mitigate impacts caused by or reasonably related to the project, and the extent and the
degree of the exaction is in rough proportionality to the impact caused by the project.
Conditions:
Note:
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6.
Unless otherwise specified herein, all conditions shall be satisfied prior to building
permit issuance.
If any of the following conditions fail to occur; or if they are, by their terms, to be
implemented and maintained over time, if any of such conditions fail to be so
implemented and maintained according to their terms, the City shall have the right to
revoke or modify all approvals herein granted; deny or further condition issuance of all
fbture building permits; deny, revoke or further condition all certificates of occupancy
issued under the authority of approvals herein granted; institute and prosecute litigation to
compel their compliance with said conditions or seek damages for their violation. No
vested rights are gained by Developer or a successor in interest by the City's approval of
this Conditional Use Permit.
Staff is authorized and directed to make, or require the Developer to make, all corrections
and modifications to the CUP 03-15 documents, as necessary to make them internally
consistent and in conformity with the final action on the project. Development shall
occur substantially as shown on the approved Exhibits. Any proposed development
different from this approval, shall require an amendment to this approval.
Developer shall comply with all applicable provisions of federal, state, and local laws and
regulations in effect at the time of building permit issuance.
If any condition for construction of any public improvements or facilities, or the payment
of any fees in-lieu thereof, imposed by this approval or imposed by law on this Project are
challenged, this approval shall be suspended as provided in Government Code Section
66020. If any such condition is determined to be invalid this approval shall be invalid
unless the City Council determines that the project without the condition complies with
all requirements of law.
Developer shall submit to Planning Director a reproducible 24" x 36" mylar copy of the
Site Plan reflecting the conditions approved by the final decision making body.
This project shall comply with all conditions and mitigation measures, which are required
as part of the Zone 20 Local Facilities Management Plan and any amendments made to
that Plan prior to the issuance of building permits.
PC RES0 NO. 5443 -3-
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Thi approval is granted subject to the approval of ZC 03-07, LCPA 03-08 and CDP 03-
23 and is subject to all conditions contained in Planning Commission Resolutions No,
5470,5471 and 5444 for those other approvals are incorporated here@ by reference.
This Conditional Use Permit shall be reviewed by the Planning Director annually to
determine if all conditions of this pennit have been met and that the use does not have a
substantial negative effect on surrounding properties or the public health and welfare. If
the Planning Director determines that the use has such substantial negative effects, the
Planning Director shall recornmend that the Planning Commission, after providing the
permittee the opportunity to be heard, add additional conditions to reduce or eliminate the
substantial negative effects.
i
Prior to issuance of a building or grading permit, the site’s Agriculturp Mitigation
fee shall be paid to the satisfaction of the Planning Director.
~~
General
!
!
\
10. Prior to hauling dirt or construction materials to or hm any proposed construction site
within this project, Contractor shall apply for and obtain approval fiom, the City
Engineer for the proposed haul route.
Dedicationsnmpr ovements ,
11, Developer shall install public improvements shown on the site plan and the following
improvements including, but not limited to paving, base, sidewalks, curbs and gutters,
grading, clearing and grubbing, sewer, water, storm drain system, fire hydrants, street
lights, retaining walls and reclaimed water, to City Standards to the satisfaction of the
City Engineer. The improvements are:
a. Black Rail Road to collector street standards.
b. Underground existing overhead utilities along the project frontage.
12. Prior to the approval of the design drawings or the issuance of grading permit or
building permit, whichever occurs first, contractor shall submit for City approval a
“Storm Water Pollution Prevention Plan (SWPPP).” The SWPPP shall be in compliance
with current requirements and provisions established by the San Diego Region of the
California Regional Water Quality Control Board and City of Carlsbad Requiremen&.
The SWPPP shall address measures to reduce to the maximum extent practicable storm
water pollutant runoff during construction of the project. At a minimum, the SWPPP
shall:
a. include all content as established by the California Regional Water Quality Control
Board requirements;
b. include the receipt of “Notice of Intent” issued by the California Regional Water
Quality Control Boar4
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c. recommend source control and treatment control Best Management Practices (BMPs)
that will be implemented with this project to avoid contact or filter said pollutants
from storm water to the maximum extent practicable before discharging to City right-
of-way OT natural drainage course; and
d. establish specific procedures for handling spills and routine clean up. Special
considerations and effort shall be applied to employee education on the proper
procedures for handling clean up and disposal of pollutants.
13. Prior to the approval of the design drawings or the issuance of grading permit or
building permit, whichever occurs first, Developer shall submit for City approval a
“Storm Water Management Plan (SWMP).” The SW shall demonstrate compliance with the City of Carlsbad Standard Urban Runoff Management Plan (SUSMP), Order
2001-01 issued by the San Diego Region of the California Regional Water Quality
Control Board and City of Carlsbad Municipal Code. The SWMP shall address measures
to avoid contact or filter said pollutants from storm water, to the maximum extent
practicable, for the post-construction stage of the project. At a minimum, the SWMP
Shall:
a. identify existing and post-development on-site pollutants-of-concern;
b. identify the hydrologic unit this project contributes to and impaired water bodies that
could be impacted by this project;
c. recommend source controls and treatment controls that will be implemented with this
project to avoid contact or filter said pollutants from stonn water to the maximum
extent practicable before discharging to City right-of-way;
d. establish specific procedures for handling spills and routine clean up. Special
considerations and effort shall be applied to resident education on the proper
procedures for handling clean up and disposal of pollutants;
e. ensure long-term maintenance of all post construct BMPs in perpetuity; and
f. identify how post-development runoff rates and velocities from the site will not
exceed the pre-development runoff rates and velocities to the maximum extent
practicable.
Code Reminder
The project is subject to all applicable provisions of local ordinances, including but not limited to
the following
14. The project is subject to all applicable provisions of local ordinances, including but not
limited to the following: Developer shall exercise special care during the construction
phase of this project to prevent offsite siltation. Planting and erosion control shall be
provided in accordance with Carlsbad Municipal Code Chapter 15.16 (the Grading
Ordinance) to the satisfaction of the City Engineer.
...
PC RES0 NO. 5443 -5-
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i NOTICE
Please take NOTICE that approval of your project includes the “imposition”,of fees, dedications,
reservations, or other exactions hereafter collectively referred to fdr convenience as
“feedexactions.”
You have 90 days from date of &ut1 approval to protest imposition of these fdexactions. If
you protest them, you must follow the protest procedure set forth in Government Code Section
66020(a), and file the protest and any other required information with the City Manager for
processing in accordance with Carlsbad Municipal Code Section 3.32.030. Failure to timely
follow that procedure will bar any subsequent legal action to attack, review, set aside, void, or
annul their imposition.
You are hereby FURTHER N.0TIFIED that your nght to protest the specified fecs/exactions
DOES NOT APPLY to water and sewer connection fees and capacity charges, nv planning, zoning, grading or other similar application processing or service fees in connectio~ with this
project; NOR DOES IT APPLY to any feedexactions of which you have previously been given a
NOTICE similar to this, or as to which the statute of limitations has previously’otherwise
expired.
PASSED, APPROVED AND ADOPTED at a regular meeting of the Planning
Commission of the City of Carlsbad, California, held on the 1st day of October 2003 by the
, following vote, to wit:
AYES:
NOES:
ABSENT:
ABSTAIN:
Chairperson Baker, Commissioners Heheman, White, and
Whitton
None
Commissioners Montgomery, Segall, and Dominguez
None
Chairperson
AD PLANNING COMMISSION
ATTEST:
Planning Director
PC RES0 NO. 5443 -6-
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\ PLANNING COMMISSION IWSOLUTION NO. 5444
A RESOLUTION OF THE PLA”G COMMISSION OF THE
CITY OF CARLSBAD, CALIFORNIA, APPROVING COAPTAL.
OPERATE A RECYCLED WATER PUMP STATION AND THE
THREE EXISTING WATER TANKS ON PROPERTY
GENERALLY LOCATED SOU” OF POINSETTIA LANE ON
THE EAST SIDE OF BLACK RAlL ROAD IN LOCAZ,
FACEXTIES MA.NAGE~NT ZONE 20.
CASE NAME:
DEVELOPMENT PERMIT CDP 03-23 TO CONSTRUCT AND
TWIN D RECYCLED WATER PUMP,
STATION
CASE NO.: CDP 03-23
WHEREAS, the City of Carlsbad Municipal Water District, “Owner/ \
Developer,” has filed a verified application With the City of Carlsbad regdg property
described as
1,
Parcels 1, 2 and 3 of Deed Document No. 116507, filed in the
Office of the County Recorder of San Diego County, State of
California on July 21,1958
.
(“the Property”); and I
WHEREAS, said verified application constitutes a request for a Coastal
Development Permit as shown on Exhibits “A” - W“ dated October 1, 2003, on file in the
Planning Department, TWIN D RECYCLED WATER PUMP STATION - CDP 03-23, as
provided by Chapter 21.201.040 of the Carlsbad Municipal Code; and
WHEREAS, the Planning Commission did, on the 1st day of October 2003, hold
a duly noticed public hearing as prescribed by law to consider said request; and
WHEREAS, at said public hearing, upon he.dring and considering all testimony
and arguments, if any, of all persons desiring to be heard, said Commission considered all factors
relating to the Coastal Development Permit.
NOW, THEREFORE, BE IT HEREBY RESOLVED by the Planning
Commission of the City of Carlsbad as follows:
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A) That the foregoing recitations are true and correct.
B) That based on the evidence presented at the public hearing, the Commission
23, based on the following findings and subject to the following conditions:
APPROVES of TWIN D RECYCLED WATER PUMP STATION - CDP 03-
Findings:
1. That the proposed development is in conformance with the Certified Local Coastal
Program and all applicable policies in that the proposed recycled water pump station
will facilitate the City’s delivery of reclaimed water in the future, at a site that
currently contains a large (8.5 million gallon) potable water tank and two 1.25
million gallon recycled water tanks. This site, including the proposed recycled
water pump station, will assist the city in providing recycled and potable water
sources in an effcient manner, within the City’s Coastal Zone.
2. The proposal is in conformity with the public access and recreation policies of Chaptm 3
of the Coastal Act in that the site is not adjacent to any coastal resources or shoreline
access opportunities. The site is already graded and in use for other Water District
functions such as water storage.
3. The Planning Commission has reviewed each of the exactions imposed on the Developer
contained in this resolution, and hereby finds, in this case, that the exactions are imposed
to mitigate impacts caused by or reasonably related to the project, and the extent and the
degree of the exaction is in rough proportionality to the impact caused by the project.
Conditions:
Note: Unless otherwise specified herein, all conditions shall be satisfied pnor to building
permit issuance.
1. If any of the following conditions fail to occur; or if they are, by their terms, to be
implemented and maintained over time, if any of such conditions fail to be so
implemented and maintained according to their terms, the City shall have the right to
revoke or modify all approvals herein granted; deny or further condition issuance of all
future building permits; deny, revoke or fiuther condition all certificates of occupancy
issued under the authority of approvals herein granted; institute and prosecute litigation to
compel their compliance with said conditions or seek damages for their violation. No
vested rights are gained by Developer or a successor in interest by the City’s approval of
this Coastal Development Permit.
2. Staff is authorized and directed to make, or require the Developer to make, all corrections
and modifications to the Coastal Development Permit, CDP 03-23 documents, as
necessary to make them internally consistent and in conformity with the final action on
the project. Development shall occur substantially as shown on the approved Exhibits.
Any proposed development different from this approval, shall require an amendment to
this approval.
PC RES0 NO. 5444 -2-
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3.
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i Developer shall comply with all applicable provisions of federal, state, and local laws and
regulations in effect at the time of building permit issuance.
If any condition for construction of any public improvements or facilipes, or the payment
of any fees in-lieu thereof, imposed by this approval or imposed by law on this Project am
challenged, this approval shall be suspended as provided in Government Code Section
66020. If any such condition is determined to be invalid this approval shall be invalid
unless the City Council determines that the project without the condition complies with
all requirements of law.
Developer shall submit to Planning Director a reproducible 24” x 36” mylw copy of the
Site Plan reflecting the conditions approved by the final decision making body.
This project shall comply With all conditions and mitigation measures, which are required
as part of the Zone 20 Local Facilities Management Plan and any amendments made to
that Plan prior to the issuance of building permits.
This approval is granted subject to the approval of ZC 03-07, LCPA 03-08 and CUP 03-
15 and is subject to all conditions contained in Planning Commission Resolutions No.
5470,5471 and 5443 for that other approval is incorporated herein by reference.
The applicant shall apply for and be issued building permits for this project within two
(2) years of approval or this coastal development permit Will expire unless extended per
Section 21.201.210 of the Zoning Ordinance.
\
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NOTICE
Please take NOTICE that approval of your project includes the “imposition” of fees, dedications,
reservations, or other exactions hereafter collectively referred to for convenience as
“feedexac tions. ”
You have 90 days fkom date of final approval to protest imposition of these feedexactions. If
you protest them, you must follow the protest procedure set forth in Government Code Section
66020(a), and file the protest and any other required information with the City Manager for
processing in accordance with Carlsbad Munjcipal Code Section 3.32.030. Failure to timely
follow that procedure will bar any subsequent legal action to attack, review, set aside, void, or
annul their imposition.
You are hereby FURTHER NOTIFIED that your right to protest the specified feedexactions
DOES NOT APPLY to water and sewer connection fees and capacity charges, nor planning,
zoning, grading or other similar application processing or service fees in connection with this
project; NOR DOES IT APPLY to any feedexactions of which you have previously been given a
NOTICE similar to this, or as to which the statute of limitations has previously otherwise
expired.
...
PC RES0 NO. 5444 -3-
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2:
PASSED, APPROVED AND ADOPTED at a regular meeting of the Planning
Commission of the City of Carlsbad, California, held on the 1st day of October 2003, by the
following vote, to wit:
AYES: Chairperson Baker, Cornmissioners Heineman, White, and
Whitton
NOES: None
ABSENT:
ABSTAIN: None
Commissioners Montgomery, Segall, and Dominguez
G COMMISSION
ATTEST
Planning Director
PC RES0 NO. 5444 -4-
I
APPENDIX C
SDG&E DRAWINGS AND SERVICE ORDER
i
NOTES
CITY OF CARLSBAD
ENCINA BASIN WATER RECLAMATION PROGRAM. PHASE I[ KRIEGER
~TEWABT INCORPORATED TWIN D RECYCLED WATER PUMP STATION
0 MF3, INSTALL 340 LFf 2- 5" C.O. FROM EXISTING SDGdrE UNDERGROUND PULL BOX (HANDHOLE) TO PROPOSED SDG&E TRANSFORMER. MINIMUM OF 30" OF COVER OVER OP OF CONDUITS. PROWDE LONG RADlUS ELBOWS. INSTALL CONDUITS PER SDG&E REQUIREMENTS. CONDUIT t TRENCH SHALL BE BACKFILLED WITH
BOTTOM OF PAVEMENT.
%
1-SACK CONCRETE SLURRY MIX TO
@ EXISTING SDGdtE UNDERGROUND PULL
@ PROPOSED SDGdrE TRANSFORMER.
BOX (HANDHOLE).
FIGURE
1
Ix-x-x-x- -X- x-x
TWIN D RECYCLED WATER PUMP STATION
J -I
(J RECYCLED WATER
BLACK RAIL ROAD
I SDG&E UNDERGROUND ELECTRIC SERVICE PLAN 1 I 3602 University Ave.. Riverside, CA. 92501 . 909-684-6900
SCOPE: THIS STANDARD SHOWS TYPICAL PLACEMENT OF BASE, SHADING, AND IMPORTED OR NATIVE BACKFILL MATERIAL FOR SDGBrE FACILITIES IN SAN DIEGO COUNM. IMPORTED OR NATIVE BACKFILL IS THE ALTERNATE BACKFILL MATERIAL, ONE SACK SLURRY IS THE PREFERRED BACKFILL MATERIAL.
SERVICE GUIDE indicates Latest Revision Completely Revised New Page information Removed
@,
BACKFILL-
GAS STD. C740
FIG. 1 JOINT TRENCH
ELECTRIC ONLY
FIG. 4
1
FIG. 2 ELECTRIC ONLY
GAS MAIN ’ I r\ r\ & N,TELCO
FOREIGN UTlLlN STREET LIGHT
-SACK SLURRY
1 ” EARTH
. SDG%E ELECTRIC
3” BASE LGTl-
SINGLE GAS FIG. 3 ONLY
SHADING
TV,TELCO
ELECTRIC
4” MIN.
SERVICE
1” EARTH ELECTRIC\ 3” BASE GAS
JOINT TRENCH SERVICE TRENCH ON
WITH SLURRY ENCASEMENT
PRIVATE PROPERTY FIG. 5
INSTALLATION:
@ ALL TRENCH RESURFACING SHALL BE DONE ACCORDING TO GOVERNMENTAL (PERMITTING) AGENCIES REQUIREMENTS.
MUST BE APPROVED BY AN SDG&E INSPECTOR. B. SHADING MATERIAL SHALL MEET GAS STANDARD 7405 OR UNDERGROUND 3370/3371 SPECIFICATIONS AND
@ BACKFILL MATERIAL SHALL MEET THE GOVERNMENTAL (PERMITTING) AGENCIES REQUIREMENTS AND SDG&E STANDARDS.
ROCKS GREATER THAN 6 INCHES ARE NOT ALLOWED IN BACKFILL MATERIAL.
(SEE UNDERGROUND STANDARD 3370, 3371 NOTE D OR GAS STANDARD 7403 NOTE 0).
D. IF FOREIGN UTILITIES REQUIRE ENCASEMENT, MAINTAIN CLEARANCES AND PROVIDE BASE FOR GAS MAIN.
@ONE OR MORE 5 INCH PRIMARY CONDUITS SHALL BE SLURRY ENCASED. 0 THE MINIMUM COMPACTED SHADING MATERIAL OVER THE UPPERMOST GAS PIPE OR CONDUIT SHALL BE 4 INCHES.
3365-1 1 IMPORTED OR NATIVE BACKFILL DATE 1-1-200(
APPD a/,@
SCOPE: THIS STANDARD SHOWS TYPICAL PLACEMENT OF BASE, SHADING, AND SLURRY BACKFILL FOR SDG&E
FACILITIES IN SAN DIEGO COUNTY.
Completely Revised New Page Information Removed GAS STD. G7410.1 Indicates Latest Revision
1 -SACK SLURRY BACKFILL
MATERIAL GAS MAIN
SERVICE GUIDE
JOINT TRENCH '0 FIG. 1 FIG. 2 ELECTRIC ONLY
1 -SACK SLURRY BACKFILL
SDG&E ELECTRIC
1 " EARTH
FOREIGN UTILITY STREET LIGHT
ELECTRIC ONLY
FIG. 3 SINGLE GAS ONLY
MIN.
I i \ ELECTRIC
in EARTH ELECTRIC A b 3" BASE GAS
FIG. 4 SERVICE' TRENCH ON PRIVATE PROPERTY FIG. 5 JOINT TRENCH FIG. 6
INSTALLATION:
@ ALL TRENCH RESURFACING SHALL BE DONE ACCORDING TO GOVERNMENTAL AGENCIES REQUIREMENTS.
€3. SHADING MATERIAL SHALL MEET GAS STANDARD 7405 OR UNDERGROUND 3370/3371 SPECIFICATIONS AND MUST BE APPROVED BY AN SDG&E AUTHORIZED INSPECTOR.
STANDARDS. AGENCIES, MUST MEET THE CONCRETE SAND SPECIFICATION LISTED IN THE STANDARD SPECIFICATIONS FOR
PUBLIC WORKS CONSTRUCTION (GREEN BOOK) AND CONTAIN NO GRAVEL.
A PAVEMENT CONCRETE CAP IS INSTALLED. SLURRY IS TYPICALLY USED FOR BACKFILLING AROUND SUBSTRUCTURES, UNDER EQUIPMENT PADS, FOR TRENCHES IN EXISTING PAVED AREAS, AND UNDER CONCRETE OR PAVED DRIVEWAYS.
IT MAY - NOT BE APPROPRIATE TO USE ONE SACK SLURRY UNDER THE THE FOLLOWING CIRCUMSTANCES:
@ BACKFILL MATERIAL SHALL MEET THE GOVERNMENTAL (PERMITTING) AGENCIES REQUIREMENTS AND SDG&E THE SAND USED FOR THE ONE SACK SLURRY OR TWO SACK, IF REQUIRED BY GOVERNMENTAL
SLURRY MUST BE FIRM BEFORE
- GOVERNMENTAL AGENCIES DO NOT ALLOW ONE SACK OR MAY REQUIRE TWO SACK SLURRY BACKFILL.
- INACCESSABILITY OF CONCRETE TRUCKS DELIVERING SLURRY.
- WHEN SLURRY IS NOT COST EFFECTIVE.
- NEW RESIDENTIAL SUBDIVISIONS, SINGLE FAMILY RESIDENCE SERVICE TRENCH
- SHALLOW WELD HOLES, POT HOLES, ETC.
INSTALLATION CONT:
D. IF FOREIGN UTILITIESREQUIRE ENCASEMENT, MAINTAIN CLEARANCES AND PROVIDE BASE FOR GAS MAIN.
SERVICE GUIDE
@ ONE OR MORE 5 INCH PRIMARY CONDUITS SHALL BE SLURRY ENCASED.
@ MINIMUM COMPACTED SHADING MATERIAL OVER THE UPPERMOST GAS PIPE OR CONDUIT SHALL BE
4 INCHES. THE GAS MAIN OR GAS SERVICE SHALL NEVER BE CONCRETE OR SLURRY ENCASED AND SHALL HAVE THE PROPER BASE, SHADING, BACKFILL AND COMPACTION.
@ MAINTAIN MIN. 30" COVER OVER PRIMARY, SECONDARIES AND SERVICES ON DIRECT BURIAL CONDUIT
@ USE APPROVED SDG&E CONDUIT AND SPACERS.
0 ON SERVICES IN PRIVATE YARDS, ALLOW FOR 6" OF TOP SOIL FOR LANDSCAPING PURPOSES.
INSTALLATIONS.
Information Removed c)s 5m. G741C Indicates Lotest Revision Completely Revised New Page
SDG&E ELECTRIC STANDARDS REVISION
REFERENCE
J. SEE UNDERGROUND STANDARD 3370, 3371 (GAS STANDARD 7403) FOR UTILIM PIACEMENT, CLEARANCES,
MINIMUM SHADING, COVER. AND COMPACTION.
K. SEE UNDERGROUND STANDARD 3376.1 FOR 1 SACK CONCRETE SLURRY MIX AND 2 SACK 3/8" GRAVEL
CONCRETE MIX OR AS REQUIRED BY GOVERNMENTAL AGENCY. I
L. SEE UNDERGROUND STANDARD 3365.1 OR GAS STANDARD 7409 FOR ALTERNATE IMPORTED OR NATIVE BACKFILL.
SCOPE: THIS STANDARD SHOWS NPlCAL PLACEMENT OF BASE, SHADING AND ONE SACK SLURRY BACKFILL - AS A PREFERRED METHOD OF BACKFILL FOR SDG&E FACILITIES.
INSTALLATION:
I A. ONE SACK SLURRY IS THE PREFERRED METHOD FOR BACKFILL.
B. IMPORTED OR NATIVE BACKFILL IS THE ALTERNATE METHOD FOR BACKFILL.
C. SLURRY IS TYPICALLY USED FOR BACKFILLING AROUND SUBSTRUCTURES, UNDER EQUIPMENT
PADS. FOR TRENCHES IN EXISTING PAVED AREAS AN0 UNDER CONCRETE OR PAVED DRIVEWAYS.
~~
GAS STD. 7410.3
REVISION
.................................................................................................................. ......................................... ................ " .......... I .................... "..I"" .... ............................................................................................... " ...................... ................................... " ....... " .- ....................................... "" ..... ... 2.D.. ....... s.L.y.~~y .... !SIHE .... ONLY .... AL~0.WE.D ... B~F!.LL" .. AR0UN.D ...F!.~ERG~s~"..~.ox .... ENS.."%% i ~.~~~_~~.~~~_~~~~~:~~~~:::..~::~:.~:::~:::::~:~.~:..::::::::::~:::::::~:::::::::~.:::::::::::::::::::::::..:::::::~.::::::::~:~::::~~.:..::::::~.::::::::~.~.::~.~..::.~::~~:.~.::::~:~.::::~.:..::::~.::::::.~:::~"::.~: I
lndicotes Cotest Revision I I Completely Revised I I New Poge I I Information Removed I SERHCE WIDE
SDG&E ELECTRIC STANDARDS I
E. IT MAY NOT BE APPROPRIATE TO USE ONE SACK SLURRY UNDER THE FOLLOWING CIRCUMSTANCES:
- GOVERNMENTAL (PERMITTING) AGENCIES DO NOT ALLOW ONE SACK SLURRY OR MAY REQUIRE
TWO SACK SLURRY BACKFILL. - INACCESSABILITY OF CONCRETE TRUCKS DELIVERING SLURRY. - WHEN SLURRY IS NOT COST EFFECTIVE. - NEW RESIDENTIAL SUBDIVISIONS, SINGLE FAMILY RESIDENT SERVICES. - SHALLOW WELO HOLES, POT HOLES, ETC.
dENT
3365.4 SLURRY BACKFI LL DATE 1 - 1-2000
APPD @//d
TYPICAL SLURRY IN STALLATI 0 N S
Completely Revised New Poge Informotion Removed W Sm. C7411 SERVICE GUIDE Indicates Latest Revision
SDG%E ELECTRIC STANDARDS REVISION
E SACK SLURRY
UNDERGROUND CONVERSIONS - CONCRETE DRIVEWAYS, PAVED ROADWAYS
E SACK SLURRY
UNDERGROUND CONVERSIONS mw CONCRETE DRIVEWAYS, PAVED ROADWAYS
/I\ SHADING MATERIAL
GAS REGULATOR STATIONS KX/R 2 - 3' X 5' BOXES
ONE
\- .. -. ... .-
v SHADING MATERIAL NO= -
GAS PIPE SHALL NOT BE SLURRY ENCASED. SEE NOTE F
REFERENCE
A. SEE UNDERGROUND STANDARD PG. 3365.1 (GAS STANDARD G7409) FOR ALTERNATE IMPORTED OR NATIVE BACKFILL.
3365.5 1
I SLURRY 8 ACKFILL
I I
SCoeE: THIS STANDARD SHOWS TYPICAL PLACEMENT OF UTILITIES WITHIN TRENCHES FOR DISTRIBUTION AND SERVICE IN DEDICATED R/W (STREET) AND PRIVATE PROPERTY, AND PROVIDES THE MINIMUM DEPTH AND CLEARANCE THAT MUST BE MAINTAINED BETWEEN VARIOUS UTILITIES OCCUPYING THE SAME TRENCH IN SAN DIEGO COUNTY. I-
SERVICE GUIDE
3370.1
POPERTV SIDE PROPERTY SIDE
information Removed W STO. 7105 ..'.'.I :::: Indicates Latest Revision Completely Revised New Page
SDC&E ELECTRIC STANDARDS REVISION
UNDERGROUND DISTRIBUTION (UD) TRENCHES DATE 1-1-98 AND UTlLlN POSITIONING - S.D. COUNN
PROPERTY SIDE
1 * .. . ..
lFlC1
PROPERM I
PROPERTY SIDE
12"
t r] 6THER CONDUIT/TRENCH
CONFIGURATIONS)
SEE STANDARD 3376 FOR
PROPERTY SIDE - SIDE
GM
_-
.-
THE FOLLOWING CHARTS SHOW THE MINIMUM COVER FOR EACH UTILITY, THE MINIMUM SEPARATION BETWEEN SPACE ALLOTMENTS AND THE MAXIMUM SIZE FOR EACH SPACE ALLOTMENT. TO READ THE CHARTS, READ ACROSS AND DOWN UNTIL THE TWO JOIN IN A SQUARE. AND THAT IS THE DISTANCE REQUIRED BETWEEN THE TWO UTILITIES.
EXAMPLE
i
UNDER VERTICAL, "ES" & "ES" JOIN AT @WHICH REFERS TO INSTALLATION NOTE 0. I
UNDER HORIZONTAL, "ES" h "GS" JOIN AT 12 INCHES WHICH WOULD BE THE DISTANCE REQUIRED FROM THE OUTER EDGE OF THE ELECTRIC SERVICE (SPACE ALLOTMENT) TO THE OUTER EDGE OF GAS SERVICE (SPACE ALLOTMENT).
* ALL MINIMUM COVER DEPTHS MEASURED FROM FINAL GRADE. DEPTHS THAN WHAT IS SHOWN UNDER "MINIMUM COVER". REDUCED DEPTHS IN NOTE @ ARE LESSER
NOT ALLOWED.
SERVICE TRENCH PRIVATE PROPERlY (MINIMUM SEPARATION FROM)
INSTALLAW
k AN EFFORT SHOULD BE MADE TO KEEP THE TRENCH DEPTH LESS THAN 60 INCHES. IF A PERSON IS REQUIRED TO ENTER A TRENCH 60 INCHES OR DEEPER, IT SHALL BE SHORED. BENCHED, OR SLOPED TO PRMNT MOVEMENT OF EARTH THAT MAY ENDANGER LIFE OR PROPERTY. THE TRENCH CONFIGURATION, UTILITY POSITIONING AND ALL OTHER RELATED CONSIXUCTION MUST CONFORM TO THIS STANDARD AND THE STATE OF CALIFORNiA PUBLIC UTILITIES COMMISSION GENERAL ORDERS 128 AND 112D, AND ANY OTHER APPROPRIATE GOVERNMENTAL AGENCY HAVING JURISDICTION OVER CONSTRUCTION.
NOTE: BENCHING THE TRENCH IS FOR SAFETY REASONS ONLY AND NOT TO BE USED FOR INSTALIATION PURPOSES.
WHERE THE TRENCH DEPTH CANNOT BE MET, G.O. 128 REQUIRES ONE OF THE FOLLOWING: (1) STEEL, OR (2) SCHEDULE 40 FW OR SCHEDULE 80 PVC CONDUIT WITH A MINIMUM WALL THICKNESS OF 0.15 INCHES, Of? (3) A 3 INCH LAYER OF CONCRETE (2 SACK 3/8" DEPTHS MUST BE APPROVED BY BOTH TH ND SDGikE INSPECTOR.
ANY CONDUIT COMBINATION SMALLER THAN 5 INCH, (NOT MULTIPLE ELECTRIC-ME OR SERVICE CONDUITS) ARE
PERMnlED WITHOUT SEPARATION WHEN INSTALLED IN A HORIZONTAL CONFIGURATION. SDGkE TELECOMMUNICATIONS SPACE ALLOTMENT IS PERMlllED NEXT TO THE ELECTRIC SPACE ALLOTMENTS WITHOUT SEPARATION. MINIMUM TRENCH WIDTH, 24 INCH MAXIMUM TRENCH WIDTH) (SEE STANDARD 3376 FOR CONDUITflRENCH
B THE TRENCH DEPTH IN THIS STANDARD SHALL BE FOLLOWED FOR ALL NORMAL INSTALLATIONS. IN INSTALLATIONS
EACH SIDE OF THE CONDUIT. REDUCED
C
(6 INCH
CONFIGURATION). @ BASE AND SHADING MATERIAL FOR GAS TRENCH ONLY:
IMPORTED MATERIAL CONSISTING OF NATURAL SAND OR MANUFACTURED SAND, EXISTING NATIVE MATERIAL, OR MATERIAL PROVIDED IT COMPLIES WITH GAS STANDARD COMPACTION REOUIREMENTS OF GOVERNMENTAL ERlAL MUST HAVE A MIXTURE OF PARTICLE SIZES RIAL AND IMPORTED MATERIAL PROVIDED BY A DMLOPER ROFESSIONAL TESTING FIRM IF, IN THE OPINION OF THE
\
SHADING MATERIAL FOR ELECTRIC TRENCH ONLY: ELECTRIC SHADING MATERIAL (ESM) SPECIFICATION.
ACCEPTABLE MATERIAL FOR (DE) DIRECT BURIED CONDUITS. NATURAL SAND. MANUFACTURED SAND, DECOMPOSED GRANITE, ROCK FREE SANDY LOAM, EXISTING NATIVE MATERIAL OR COMBINATION THEREOF. AGGREGATE COMPOSITION SHALL BE CAPABLE OF PASSING THROUGH A 1/2 INCH SIEVE. SUITABLE MEANS MAY BE REQUIRED AT THE DISCRETION OF THE SDG6E INSPECTOR TO MEET THIS (ESM) SHADING MATERIAL SPECIFICATION. NOT ACCEPTABLE ARE SOILS OF HIGHLY ORGANIC CONTENT IDENTIFIED BY ODOR OR SPONGY FEEL AND HIGHLY PLASTIC (SOGGY) CLAYS, SILTS OR METALLIC SLAG.
$
GRAVELS SHALL NOT AMOUNT TO MORE THAN 50% OF THE MIXTURE. SCREENING OR OTHER
BASE AND SHADING MATERIAL FOR JOINT GAS AND ELECTRIC TRENCH:
WHEN BOTH GAS AN D IN THE SAME TRENCH, THE BASE AND SHADING MATERIAL WHICH COMPLIES WITH GAS BE USED FOR THE GAS PIPE. ELECTRIC SHADING MATERIAL (ESM) MAY BE USED ON ELECTRIC CONDUIT.
BACKFILL MATERIAL FOR GAS AND/OR ELECTRIC:
THE MATERIAL USED FOR BACKFILLING THE TRENCH ABM THE SHADING MATERIAL AND EXTENDING UPWARD TO THE SUBGRAOE SHALL BE FREE OF ROCKS OR CLODS LARGER THAN 6 INCHES IN ANY DIMENSION. THE COARSE MATERIAL SHALL BE WELL DISTRIBUTED THROUGHOUT THE FINER MATERIAL. THE AMOUNT OF ROCKS OR CLODS SHALL BE LIMITED, IN THE OPINION OF THE INSPECTOR, TO ALLOW FOR BAR TESTING FOR GAS LEAKS. THE BACKFILL MATERIAL SHALL MEET THE REQUIREMENTS OF ALL APPLICABLE CODES. ORDINANCES AND SDGhE STANDARDS AND BE FREE OF DEBRIS AND ORGANIC MATTER. 1-SACK Y MIX MAY BE USED FOR FOR BACKFILL MATERIAL IF THE PIPE GAS IS SHADED WITH A MINIMUM COMPACTED SHADING MATERIAL. 1-SACK CONCRETE SLURRY MIX IS PREFERRED FOR BACKFILL INSTALLATION SHALL MEET MEET THE REOUIREMENTS OF GOVERNMENTAL AGENCIES AND SDGdrE STANDARDS.
BASE INSTALLATION FOR GAS:
FOR GAS, 3 INCHES OF BASE MATERIAL IS REQUIRED ON THE BOTTOM OF THE TRENCH TO PRMNT DAMAGE FROM ROCKS, SAGS. OR POCKETS.
EARTH TRENCH BOTTOM INSTALLATION FOR ELECTRIC: (EB & DB CONDUIT)
THE 1 INCH EARTH TRENCH BO?TOM SHALL BE STABLE WITH A UNIFORM GRADE CONTAINING NO HARD CLODS, ROCKS, ETC. THAT MAY DAMAGE THE CONDUIT. IF. IN THE OPINION OF THE SDG&E INSPECTOR, THE CONDUIT MAY BE DAMAGED, TAMPING, WETTING OR A 3 INCH BASE ELECTRIC SHADING MATERIAL (ESM) MAY BE REOUIRED.
SHADING INSTALLATION:
COMPACTED SHADING MATERIAL R COMPACTION) SHALL BE ELECTRIC CONDUIT. A MlNlMU INCHES OF COMPACTED SHADING MATERIAL WILL BE REOUIRED IF. IN THE OPINION OF THE INSPECTOR. THERE IS AN EXCESSIVE AMOUNT OF ROCK AND CLODS IN THE -BACKFILL. 'THE SHADING MATERIAL MUST BE INSTALLED-AND COMPACTED AT EACH LML BEFORE INSTALLING THE NEXT UTILITY. THE SHADING MATERIAL MUST BE INSTALLED BEFORE THE TRENCH IS BACKFILLED TO PREVENT DAMAGE FROM ROCKS, CLODS, ETC. GAS PIPE SHALL NEVER BE CONCRETE OR SLURRY ENCASED, AND SHALL HAVE THE PROPER BASE, SHADING, BACKFILL, AND COMPACTION.
COMPACTION:
EXTREME CARE SHALL BE TAKEN TO ENSURE THAT SHADING MATERIAL IS ADEQUATELY COMPACTED BOTH UNDERNEATH AND AROUND GAS PIPE AND FITTINGS TO PREVENT EXCESSIVE STRESS AND SHEARING FORCES. HAND TEMP AROUND FITTINGS WHERE MECHANICAL COMPACTION CANNOT BE USED. COMPACTING WITH A
HYDRAHAMMER OR SIMILAR EQUIPMENT SHALL NOT BE ALLOWED ON TRENCHES WHERE POLYETHYbENE PIPE HAS BEEN INSTALLED. WHEN THE SHEEP'S FOOT METHOD OF COMPACTION IS USED. A MINIMUM OF 18" OF
COVER IS REQUIRED BEFORE COMPACTING. WHEEL ROLLING WITH A HEAW VEHICLE, COMBINED WITH ADEQUATE
MECHANlCALOMPACTION, IF NEEDED, IS ALLOWED FOR COMPACTING BACKFILL MATERIAL PROVIDED A MINIMUM OF% INCHESgOF MECHANICALLY COMPACTED SHADE MATERIAL AND A MINIMUM OF 12" OF BACKFILL MATERIAL
HE GAS PIPE OR ELECTRICAL CONDUIT. WHEN FLOODING OF THE TRENCH S DONE TO CONSOLIDATE BACKFILL, CARE MUST BE TAKEN TO ENSURE THAT GAS PIPE OR ELECTRIC k ONDUIT HAS NOT EX-
FLOATED FROM ITS POSITION IN THE TRENCH. COMPACTION BY THE WATER JETTING METHOD IS NOT ALLOWED. ALLOWED. SHADING AND BACKFILL SHALL BE COMPACTED IN ACCORDANCE WITH GOVERNMENTAL AGENCIES AND SHALL HAVE A MINIMUM OF 90 PERCENT RELATIVE COMPACTION.
ALL BASE, SHADING. AND BACKFILL MATERIAL MUST BE APPROVED BY AN SDGdrE INSPECTOR.
@ ONE OR MORE 5 INCH PRIMARY CONDUITS SHALL BE SLURRY ENCASED. '0 FOREIGN UTILITIES MUST NOT BE LOCATED UNDER ANY SDG&E FACILITIES, SUCH AS HANDHOLES, TRANSFORMER
PADS, ETC. I
SINGLE GAS - SERVICE 1 INCH AND LESS 6 INCHES .
SINGLE GAS 2 INCH 9 INCHES
SINGLE GAS 3 AND 4 INCHES , 12 INCHES
SINGLE GAS 6 AND 8 INCHES 18 INCHES
GAS
ELECT.
MAIN TRENCH
ALL CONDUIT SIZES INCLUDING 2 - 5 INCHES 'I
ALL SIZES 6 INCHES
........ ALL PERMITTED SIZES 5~212 INCHES$ ........ ...................... 18 INCHES5
ELECTRIC ........................................ .................... ......... "..... ~ ............................. ........ ........ ........ ..... ...( AND ~~~~~~~~~~~~~~~~~~~~~-~~~~~~~~~~~~~ ..................................................................... " " " " ........ .................. ................ ............................ ...................... ....... JOINT UTILITIES
MULTIPLE ELECTRIC SPACERS AND 1 -SACK CONCRETE SLURRY "t.9. INCHES
................................... ........
ELECT. SERV'CE TRENCH 'IEs-ZXCLUD~~G GASI- LARGER THAN 2 INCH 12 INCHES I
UTILITIES (EXCLUDING GAS) 2 INCH CONDUIT I 6 INCHES
ELECTRIC ALL SIZES 9 INCHES SINGLE ELECTRIC & FOREIGN
UTILI1 . ~- -- - - _-
JOINT UTILITIES ALL PERMITTED SIZES 12 INCHES
MULTIPLE ELECTRIC SPACERS AND 1-SACK CONCRETE SLURRY 9 INCHES
FOR A CAS OR ELECTRIC SERVICE, IF ANY OBSTRUCTION IS ENCOUNTERED (WATER PIPES, ETC.). A 2 FOOT WIDE X 3 FOOT LONG HOLE MAY BE REQUIRED FOR WORKING ROOM IN THE AREA OF THE OBSTRUCTION. THIS IS TO BE DETERMINED BY AN SDG&E INSPECTOR.
THE FOREIGN UTlLlM (U) SPACE ALLOTMENT MUST BE A MINIMUM OF 6 INCHES BELOW THE GAS MAIN AND 12 INCH RADIAL SEPARATION FROM ALL OTHER UTILITIES MUST BE MAINTAINED (SEE FIGURES 1 AND 5). IF (U) SPACE ALLOTMENT EXCEEDS A 9 INCH HORIZONTAL MEASUREMENT, IT MUST BE PLACED DIRECTLY ABOVE THE ELECTRIC SPACE ALLOTMENTS AND SHALL NOT EXTEND PAST THE OUTER SIDES OF ELECTRIC SPACE ALLOTMENTS. (FOR INSTALLATION PURPOSES, BENCHING THE TRENCH IS NOT ALLOWED), SEE FIGURES 2, 3, & 4. ELECTRIC (SEE FIGURE 6).
H
IF (U) SPACE ALLOTMENT IS 9" X 9" OR SMALLER, IT IS ALLOWED AT THE SAME LEVEL AS THE
I ALL EB CONDUIT, REGARDLESS OF THE SIZE, SHALL BE CONCRETE ENCASED WITH 1-SACK CEMENT SLURRY.
DB CONDUIT MAY ALSO BE
* OB CONDUIT MAY ALSO BE SLURRY ENCASED IF INCLUDED IN THE MULTIPLE ELECTRIC PACKAGE. IN A SERVICE
TRENCH, ALL EB CONDUIT SHALL BE ENCASED WITH CEMENT SLURRY (1 SACK). CONCRETE OR SLURRY ENCASED IF INCLUDED IN THE MULTIPLE ELECTRIC PACKAGE.
GAS STD. 7403.4 bk!:l lndicotes Lotest Revision I 1 Comoletelv Revised I 1 New Pooe I I Information Removed I SERvlCE GUIDE I
~ ~~
REVIS ION SDG&E ELECTRIC STANDARDS
DATE 1 - 1-2000
APPD g&-//i
UNDERGROUND DISTRIBUTION (UD) TRENCHES
AND UTILITY POSITIONING - S.D. COUNN
3370.4
@ MINIMUM SEPARATION MAIN TRENCH
UTILITY HORIZONTAL SEPARATION -
TELCO MULTIPLE CONCRETE DUCT (CONDEX), TRANSITE, WATER, SEWER, FUEL, OIL, DIESEL, PROPANE GAS, SPRINKLER, DRAIN,
LEACH LINES, STEEL GAS MAIN LARGER THAN 2", PRIVATELY OWNED UTILITIES i.e. PRIVATE TELCO, VIDEO, AUDIO, SECURITY WIRES, FIRE ALARM, STREET LIGHTING, ETC..
NOT PERMlllED IN JOINT TRENCH WITH GAS AND/OR ELECTRIC
I CAS STD. SERVlCE GUIDE Indicates Lotest Revision Completely Revised New Poge Informotion Removed 7405.5
SDG&E ELECTRIC STANDARDS r REVISION
WATER, SEWER, EXISTING GAS OR ELECTRIC, STORM DRAINS, 5 FEET WITH 3 FEET OF STEAM, IRRIGATION PIPE, SPRINKLER PIPE LARGER THAN 4", PRIVATE TELCO TRANSITE, PROPANE GAS UNDISTURBED SOIL
SEWAGE LEACH LINES OR SEEPAGE PITS
IRRIGATION, SPRINKLER PIPE 4" AND LESS
FUEL OIL, GASOLINE, DIESEL
5 FEET FROM MAIN TRENCH FOR EACH 1' DEPTH OF MAIN TRENCH
3 FEET PROVIDED DEPTH OF P!PE DOES NOT EXCEED DEPTH OF GAS OR ELECTRIC
FROM GAS-15 FEET. FROM ELECT.-5 FEET WITH 3 FEET OF UNDISTURBED SOIL
IN CONSIDERATION FOR THE SAFER OF THE GENERAL PUBLIC, PERSONS ENGAGED IN CONSTRUCTION, PROPERTY, AND FOR THE OPERATION AND MAINTENANCE OF SDGdrE SYSTEM, PROPANE GAS LINES ARE NOT PERMITTED IN A JOINT TRENCH WITH SDGdcE FACILITIES.
IF FIELD CONDITIONS WILL NOT PERMIT ANY OF THESE SEPARATIONS, THEN APPROVAL OF REDUCED SEPARATIONS MUST COME FROM BOTH THE CUSTOMER PROJECT PLANNER AND SDGdrE INSPECTOR. ON FIELD CONDITIONS THAT WILL NOT PERMIT STANDARD PARALLEL SEPARATIONS, A 12 INCH MINIMUM SEPARATION IS REQUIRED. PROPANE GAS SHALL ALWAYS HAVE A 5 FOOT SEPARATION.
VERTICAL (CROSSING)
UTILITY -ON MIN. -
ALL WET UTILITIES, TELCO, TV. GAS, ELECT. 6 INCHES
FUEL OIL, GASOLINE, DIESEL FROM GAS, 12 INCHES FROM ELECT. 6 INCHES
ARC-WELDABLE PIPELINES 3" AND LARGER 18 INCHES
STEAM (SEE NOTE) FROM GAS, POLY PIPE 5 FEET FROM ELECT., 5 FEET
NOTE: PLACE INSULATING BARRIER BETWEEN STEAM MAIN AND POLYETHYLENE PIPE AND/OR ELECTRIC.
MINIMUM SEPARATION SERVlCE TRENCH
IN A SERVICE TRENCH, WATER, SEWER, PROPANE GAS, SPRINKLER, DRAIN, LEACH LINES, PRIVATELY OWNED UTILITIES i.e., PRIVATE TELCO, VIDEO, AUDIO, SECURIM WIRES, FIRE ALARM, STREET LIGHTING, ETC.. ARE NOT PERMITTED IN THE SAME TRENCH WITH GAS OR ELECTRIC. WHEN THESE FACILITIES PARALLEL GAS OR ELECTRIC, 12 INCHES SEPARATION BETWEEN SEPARATE TRENCHES SHALL BE MAINTAINED BETWEEN THE UTILITIES WITH AT LEAST 12 INCHES OF UNDISTURBED NATIVE SOIL BETWEEN TRENCHES. PROPANE GAS SHALL ALWAYS HAVE A I 5-F60T SEPARATION.
(EXCEPTION) WHEN THERE IS NO SDG&E GAS IN THE SERVICE TRENCH, A SINGLE NATURAL GAS LINE MAY BE INSTALLED IN THE TRENCH, PROVIDED A 12 INCH RADIAL SEPARATION IS MAINTAINED. INDIVIDUAL HOUSE ON A CASE BY CASE BASIS, NOT A GROUP OF HOUSES/BUILDINGS).
FUEL OIL, GASOLINE, AND DIESEL LINES MUST MAINTAIN A 15 FOOT SEPARATION FROM GAS PIPELINES AND A FIVE FOOT SEPARATION WITH THREE FEET OF UNDISTURBED SOIL SEPARATION FROM ELECTRIC CONDUITS.
IF FIELD CONDITIONS WILL NOT PERMIT THESE SEPARATIONS, THEN APPROVAL OF REDUCED SEPARATIONS MUST COME FROM BOTH THE CUSTOMER PROJECT PLANNER AND SDG&E INSPECTOR.
WHEN FIELD CONDITIONS WILL NOT PERMIT STANDARD PARALLEL SEPARATIONS. A 12 INCH MINIMUM SEPARATION IS REQUIRED. PROPANE GAS SHALL ALWAYS HAVE A 5 FOOT SEPARATION.
WHEN CROSSING, A 6 INCH VERTICAL SEPARATION IS REQUIRED.
(THIS IS FOR AN
3370.5 I UNDERGROUND DISTRIBUTION (UD) TRENCHES
AND UTILIV POSITIONING - S.D. COUNTY
THE GAS MAIN SHALL BE THE LAST INSTALLED, SHALL BE ON THE PROPERR SIDE OF THE TRENCH, AND SHALL HAVE A MINIMUM OF 4 INCH PAD (AFTER COMPACTION) OF SHADING MATERIAL ME WIDTH OF THE TRENCH ABOVE ANY FOREIGN UTILIN. ANY CROSSING INVOLVING GAS SHALL MAINTAIN A MINIMUM YERTiCAL SEPARATION OF 6 INCHES. A GAS SERVICE INSTALLED IN A MAIN TRENCH OR A SERVICE TRENCH ON
PUBLIC PROPERTY SHALL REQUIRE THE SAME COVER AND CLEARANCES AS A GAS MAIN. A &AS SERVICE IN A TRENCH ON PRIVATE PROPERR MAY BE INSTALLED ON THE SAME LEVEL AS FOREIGN LJTIUN OR ELECTRIC, BUT SHALL NOT BE DEEPER THAN THE ELECTRIC SERVICE. SDG&E INSPECTOR IS TO DETERMINE AT WHICH
LEVEL THE GAS SERVICE IS INSTALLED ON PRIVATE PROPERW.
Information Removed GAS STD. lndicotes Latest Revision Completely Revised New Page
SDG&E INSTALLED STREET LIGHT CIRCUITS, WHEN INSTALLED ALONE BE AT A MINIMUM DEPTH OF 24 INCHES EVERYWHERE EXCEPT ON PRIVATE PROPERTY, MAY BE 18 INCHES BELOW FINAL GRADE.
SERVlCE GUlD
THE ELECTRIC PRIMARY WILL BE ON THE STREET SIDE OF THE TRENCH. THE SDGkE STREET LIGHT CIRCUITS WILL BE ON THE PROPERTY SIDE OF THE TRENCH WHENEVER POSSIBLE. FOREIGN UTILITY STREET LIGHTS
AND SHALL MAINTAIN A 12 INCH RADIAL SEPARATION. ALL UTILITIES SHALL MAINTAIN A 6 INCH SEPARATION WHEN CROSSING ALL SDGBE ELECTRIC. PAGE 7403.2 (3370.2).
MINIMUM HORIZONTAL SEPARATION FROM GAS PIPE TO ANY FOREIGN SUBSTRUCTURE (VAULTS, ' HANOHOLES, ETC.) SHALL BE 12 INCHES.
GAS LINES MUST NOT BE LOCATED UNDER ANY STRUCTURE, SUCH AS BUILDINGS, CARPORTS, bATIOS, BREEZEWAYS, EQUIPMENT PADS, AND FACILITIES, SUCH AS SPLICE BOXES FOR ELECTRIC, CATV, TELCO, ETC. TREES OR SHRUBBERY MUST NOT BE PLANTED OVER ANY GAS PIPELINE. A THREE FOOT SEPARATION MUST BE MAINTAINED BETWEEN THE TREE ROOT BALL AND THE GAS PIPELINE. i
CATV, €TC. REQUIRES CONCRmE ENCASEMENT, CONCRETE MAY BE SUBSTITUTED FOR THE BACKFILL.
CONCRETE ENCASED, A MINIMUM 4 INCH COMPACTED SHADING MATERIAL SHALL BE INSTALLED OVER THE UPPERMOST DE CONDUITS BEFORE THE CONCRETE BACKFILL IS INSTALLED. ALL OTHER INSTALIATIONS SHALL PROVIDE THE REQUIRED MATERIALS AS SPECIFIED IN THIS STANDARD AND STANDARDS 3365 & 3376. NOTE: THE GAS MAIN, GAS SERVICE SHALL NEVER BE CONCRETE OR SLURRY ENCASED AND SHALL HAVE THE PROPER BASE, SHADING, BACKFILL, AND COMPACTION.
MINIMUM SEPARATION OF ANY FOREIGN UTILITY INCLUDING WATER PIPES, SEWER, ETC.. FROM SDGkE SUBSTRUCTURES SHALL BE 12 INCHES. PROPANE GAS SHALL BE 5 FEET.
(NOT SERIES) SHALL BE ON THE PROPERTY SIDE OF THE TRENCH AT THE SAME LEVEL AS SOGB~E CONDUITS
FOR SEPARATION ON THE SERVICE TRENCH, SEE CQART ON
IF AN AGENCY OR UTILITY SUCH AS THE us. GOVERNMENT, SAN DIEGO UNIFIED PORT DISTRICT,ITELCO,
BASE 6~ SHADING SHALL BE PER SDG&E STANDARDS. ON SDGBE CONDUITS, EITHER DIRECT BURIEO OR
7403.6
REVISION
REFERENCE:
@ SEE STANDARD PAGE 3364.1 FOR UTlLlM LOCATIONS IN LOCAL AND COLLECTOR STREETS.
S. SEE STANDARD PAGE 3364.2 FOR UTILITY LOCATIONS IN MAJOR STREETS, PRIME ARTERIALS AND EXPRESSWAYS.
T. SEE STANDARD PAGE 3364.3 FOR JOINT TRENCH TYPICAL LOCATION FOR UNDERGROUND CONVERSIONS.
@
@
@
SEE STANDARD PAGE 3365 FOR IMPORTED OR NATIVE BACKFILL MATERIAL.
SEE STANDARD PAGE 3365 FOR SLURRY BACKFILL MATERIAL.
CONCRETE OR CONCRETE SLURRY ENCASEMENT OF ELECTRIC CONDUITS SHALL BE IN ACCORDANCE WITH
STANDARD 3376.
X. SEE STANDARD PAGE 3376, 3421, 3425, 3426, AND 3427 FOR CONDUIT CONFIGURATIONS ALLOWED IN THE SERVICE TRENCH.
SEE STANDARD 4620 TELECOMMUNICATIONS INSTALLATION. @
2. FOR TRENCHING AND SHORING QUESTIONS, SEE SDGBE TRENCHING AND SHORING MANUAL.
SDG&E ELECTRIC STANDARDS I I 3370.6
DATE 1-1 -2000 UNDERGROUND DISTRIBUTION (UD) TRENCHES
AND UTILITY POSITIONING - S.D. COUNTY
SCOPE: THIS STANDARD SHOWS CEMENT AND SLURRY MIXTURE. ALSO SHOWN ARE CONCRETE SLURRY
ENCASED CONDUIT INSTALLATIONS. -
DATA FOR CONDUITS WHICH ARE NORMALLY INSTALLED 2 CONDUITS WIDE AND 1 THRU 4 ROWS HIGH I
NUMBER OF
CONDUITS IN TRENCH
2
4
6
8
CONCRETE PER 100 FT
OF TRENCH, CUBIC YARDS
4" 5"
CONDUITS CONDUITS
5.5 5.2
8.7 8.5
12.4 1 1 .a
16.1 15.1
i
i
GRAVEL CEMENT CEMENT AIR SAND
ENTRAINMENT (LES) LBS SACKS LBS SIZE
ENCASEMENT 0-2 3000f 50 - - 1 94
FOR %
I SLUMP
MIN. MAX. MAX., TOTAL WATER ,
(IN) (IN)
60 GALS PER YARD 6 8
CEMENT FOR
SLUMP MAX.. TOTAL WATER
PER SACK OF CEMENT (GALS.)
GRAVEL CEMENT
(IN) (IN)
Ai R
z ENTRAINMENT (LE'S)
SECONDARY SERVlCE TRENCH NOTES
EN CAS E ME NT 0-2 1600f20 3/8 1600f20 2 188 50 GALS PER YARD 6 8
SERVICE GUIDE Indicates Latest Revision Completely Revised New Page Information Removed
3376.1
SDG%E ELECTRIC STANDARDS REVISION
CONDUIT DATE 1-1-96
EN CAS ED M U LTI - CON D U IT I N STALIATI O N APPD @/e
U
SERVICE GUIDE
REVlSlO N
DATE 1-1-98
APPD @m 3
L?::] Indicates Lotest Revision I I Completely Revised New Poge Information Removed
SDG&E ELECTRIC STANDARDS
3426.1 THREE-PHASE TRANSFORMER PAD INSTALLATION 3426
SCOPE: THIS STANDARD SHOWS REQUIREMENTS FOR INSTALLING A 3426 THREE-PHASE PAD FOR DEAD FRONT
TRANSFORMER APPLICATION THROUGH 1000 KVA. -
2 TON
LIFTING ANCHORS
STOCK NUMBER
5 1 4005
ASSEMBLY UNITS
MAXIMUM PRIMARY CONDUITS ALLOWED
2 RUNS OF 4" (EB OR De)
PRIMARY CON DUlTS
IMARY 18' 13' 1' gmr\Pi 18" 1.
534 9" - 50"
5-5" SECONDARY~
CONDUIT ARRANGEMENT WITHOUT HANDHOLE FOR ONE CUSTOMER ULTIMATELY (SEE NOTES @ & 0)
i
MAXIMUM PRIMARY CONDUITS ALLOWED
2 RUNS OF 4" (EB OR DB)
SERVICE GUIDE ).'.::I Indicates Latest Revision I I Completely Revised
14-1/2"7 I
I Informotion Removed New Page
INSTALLATION FOR 9-3" OR 9-4" SECONDARY CONDUITS
12"
T
1
T
12"
TYPICAL INSTALLATION FOR
6-5" SECONDARY CONDUITS I
I.,. 7 FINAL GRADE I.!? I
NOTES:
t
12"
7-
- TRANSFORMER COOLING FINS MAY OVERHANG REAR OF PAD BY 6 INCHES.
- IF THE NUMBER OF SECONDARY CONDUITS IS GREATER THAN THE MAXIMUM SHOWN, USE A PAD PER STANDARD 3427. - TRANSFORMER PAD MAY NOT BE POURED IN PLACE. USE PRECAST PADS ONLY.
DATE 1-1-98
APPD @/ THREE-PHASE TRANSFORMER PAD INSTALLATION 3426 3426.2
'W
U
w SERVICE GUIDE >::] lndicotes Lotest Revision 1 I Completely Revised
INSTAUATION:
A 1 INCH EARTH IN THE BOTTOM OF TRENCH IS REQUIRED TO PREVENT DAMAGE FROM ROCKS, SAGS AND * POCKETS.
@ PUCE ALL SECONDARY CONDUITS WITHIN THE PAD OR HANDHOLE OPENING AS SHOWN ON PAGES 3426.1
OR 3426.2. HANDHOLE IS REQUIRED FOR SECONDARY CONDUITS, TERMINATE THEM NOT LESS THAN 3 INCHES ABOVE BOTTOM OF HANDHOLE. DO NOT CUT INTO THE CURVED PORTION OF THE ELBOWS. RADIUS OF CURVA- TURE IS 36 INCHES MINIMUM FOR 3 INCH, 4 INCH AND 5 INCH CONDUITS.
TERMINATE PRIMARY OR SECONDARY CONDUITS FLUSH WITH THE TOP OF THE PAD. WHEN A
@ THE CONDUIT CONFIGURATION REQUIREMENT BETWEEN TERMINATING POINTS LIMITS THE SECONDARY CONDUIT
CONFIGURATION TO 2 WIDE X 5 DEEP OR 5 WIDE X 2 DEEP (NO ONE CONDUIT IS TO BE COMPLETELY SURROUNDED ON ALL FOUR SIDES BY OTHER CONDUITS). USING SPACERS AND ONE SACK CONCRETE
SLURRY BACKFILL. CONDUITS MAY ALSO BE INSTALLED SIDE BY SIDE ON THE BOTTOM OF THE TRENCH WITHOUT SPACERS OR CONCRETE SLURRY (4 CONDUITS MAX.). IN THE TRANSITION AREA WHERE THE CONDUITS FROM THE BOTTOM OF THE TRENCH START TOWARD THE SURFACE (THE STRAIGHT PORTION BY
PAD OPENING. AT THE SURFACE POINT, THE CONDUITS MAY BE BUNDLED TOGETHER. USE SDG&E APPROVED BASE. SHADING AND BACKFILL.
THE 90- BEND), SPACERS MAY BE REQUIRED TO ALLOW THE 90- BENDS TO ENTER STRAIGHT INTO THE
New Poge Informotion Removed
1 -SACK CONCRF-
)ATE 1-1-98
4PPD @/cltx
2 WIDE X 5 DEEP 'i
MAXIMUM OF
4 CONDUITS HHTHOUT SPACERS OR CONCRETE SLURRY
I 5 WIDE X 2 DEEP . I /SHADING
THREE-PHASE TRANSFORMER PAD INSTALIATION 3426 3426.3
'//////y EARTH
@ THE TOP AND INTERMEDIATE 3314 HANDHOLE SECTIONS MAY BE ELIMINATED WHEN INSTALLATION SERVES
IF MORE THAN FIVE 5 INCH CONDUITS ARE USED (REGARDLESS OF THE NUM- ONLY ONE CUSTOMER ULTIMATELY AND CONDUIT REQUIREMENTS DO NOT EXCEED PAGE 3426.1 OR AS SPECIFIED IN NOTE "F". BER OF CUSTOMERS), ONE TOP SECTION AND TWO INTERMEDIATE SECTIONS ARE REQUIRED.
@ FOR SECONDARY imAuAnoN WITHOUT A HANDHOLE uLnt.umLY ONE CUSTOMER ONLY). ANY COMBINA-
TlON OF 3 INCH, 4 INCH OR 5 INCH SECONDARY CON 6 UlTS MAY BE USED PROVIDED THEY DO NOT EXCEED A TOTAL OF SIX OR THE TOTAL OF EACH SIZE CONDUIT SHOWN ON PAGE 3426.1. TWO EXTRA 1 INCH OR TWO EXTRA 2 INCH CONDUITS MAY BE ADDED TO SERVE STREET LIGHT, RECREATION BUILDINGS.
ETC .
INCH SECONDARY CONDUITS MAY BE USED, PROVIDED THEY DO NOT EXCEED THE TOTAL OF 9 OR THE
CONDUITS MAY BE ADDED TO SERVE STREET LIGHT, RECREATION BUILDINGS, ETC.
@ FOR SECONDARY IN INSTALLATIONS WITH A HANDHOLE, ANY COMBINATION OF 3 INCH, 4 INCH, OR 5
MAXIMUM OF EACH SIZE CONDUIT (9-3". 9-4" OR 6-5"). TWO EXTRA 1 INCH OR TWO EXTRA 2 INCH
H WHEN THE NUMBER OF REQUIRED CONDUITS IS LESS THAN THE TOTAL SHOWN ON THE SKETCHES, INSTALL * THE CONDUITS IN NUMBERED SEQUENCE AS SHOWN.
INSTAUATION CON%
SEWCE GUIDE Indicates Lotest Revision I I Completely Revised
@ IF THE INSTALLATION IS FOR A 12KV TO 4KV TRANSFORMER (HPR TYPE), DO NOT '
USE HANDHOLE AND TERMINATE CONDUITS FLUSH WITH TOP OF PAD.
36" X 72" (STANDARD 3314), ONE TOP SECTION (STOCK NUMBER 336210). SECTtONS (STOCK NUMBER 336212) AND ONE PARKWAY COVER (WITH LIP
6843).
@ IN SOFT SOILS A CONCRETE BACKFILL (1-SACK MIX.) IS REQUIRED UNDER THE PW, 12 INCHES I BEYOND THE SIDE EDGES OF PAD AND 12 INCHES DEEP.
New Poge Informotion Removed
REFERENCE:
P. SEE STANDARD 321 1 FOR PAD IDENTIFICATION.
Q. SEE STANDARD 3370 OR 3371 FOR TRENCH, UTlLlM POSITIONING, SHADING AND BACKFkL REQUIREMENTS.
I R. SEE STANDARD 3376 FOR CONCRETE SLURRY, SHADING AND TYPE OF CONDUIT.
S. SEE STANDARD 3481 FOR TRANSFORMER BARRIER PROTECTION.
T. SEE STANDARD 3483 FOR MINIMUM OPERATING AND CLEARANCE REQUIREMENTS (PAD PLACEMENT).
L U. SEE STANDARD 3484 FOR PAD INSTALLATION OF PAD-MOUNTED EQUIPMENT. t V. SEE STANDARD 3486 FOR RETAINING WALL REQUIREMENTS AND CLEARANCES FROM REVERS SUEGRADE RETAINING WALLS.
W. SEE STANDARD 3487 FOR RETAINING WALLS.
X. SEE STANDARD 3751 FOR TRANSFORMER INSTALLATION.
Y. SEE STANDARD 4512 FOR EQUIPMENT GROUNDING.
Z. SEE STANDARD 4514 FOR GROUNDING TELCO CONDUCTOR IN PAD-MOUNTED EQUIPMENT.
I
DATE 1 - 1 -2OOC I APPD m/,ytk 3426-4 1 THREE-PHASE TRANSFORMER PAD INSTALLATION 3426
SCOPE THIS STANDARD SHOWS THE MINIMUM RETAINING WALL AND OPERATING CLEARANCES REQUIRED FOR PADS AND SUBSURFACE STRUCTURES.
SERVICE GUIDE
3483.1
PAD OR SUBSTRUCTURE 1
/ / !/ 1 1 11 /
I I 'd'
k'A' 4 I
:xj Indicates Latest Revision I I Completely Revised I I New Page I I Information Removed
SDG&E ELECTRIC STANDARDS REVISION
DATE 3-1-02 CLEARANCE REQUIREMENTS FOR PAD-MOUNT AND
SUBSURFACE EQUIPMENT FROM ABOVE GROUND OBJECTS AIJ?D g#I/id
- street or sidewalk side -
PAD USAGE
i I PAD OR STRUCTURE I
DIMENSIONS AND MINIMUM CLEARANCE
MINIMUM DIMENSIONS @@@ OPERATING WIDTH I I I 'A' 1 'B' I '0' I "b' 'd'
THREE-PHASE
PAD USAGE (CONTINED)
PAD OR STRUCTURE
OPERATING WlDTH
'A' 'B'
6'-6" 4'-11 3425 (1981) (1499)
6'-6" 6'- 3"
(1 981 ) (1 905) 8'-2" 7'-8"
(2337)
CONST DIMENSIONS AND MINIMUM
STD. PAD USAGE
THREE-PHASE TRANSFORMER
THREE-PHASE TRANSFORMER 3426
THREE-PHASE LIVEFRONT TRANSFORMER 3427 (2489)
MINIMUM CLEARANCE DIMENSIONS @@a
'Q' 'b' 'C' 'd'
18" 18" 2' 8'
(457) (457) (610) (2438)
18" 18" 2' 8'
(457) (457) (610) (2438) 18" 18" 2' 8'
(457) , (457) , (610) , (2438)
~~
CABLE JUNCTION PEDESTAL
STRUCTURE USAGE
PRIMARY
MINIMUM CLEARANCE PAD OR STRUCTURE
OPERATING MDTH
'A' 'B' 'a' 'b' 'C' 'd'
4'- 10" 2'-6" 1 8" 18" 18" 8'
DIMENSIONS @@a CONST DIMENSIONS AND MINIMUM
STD.
3523A (1473) (762) (2;) (4;;) (:E) (2438)
SUBSTRUCTURE CLEARANCES FROM ABOVE GROUND OBJECTS.
SERVICE GUIDE Indicates Latest Revision I x I Completely Revised I I New Page
-
NOTES: - THIS STANDARD DOES NOT APPLY TO EXISTING COMMUNICATION PEDESTALS PROVIDING THEY ARE NO CLOSER THAN 4 INCHES TO THE PAD AND THEY DO NOT OBSTRUCT THE DOORS OR THE 8 FOOT WORK SPACE.
- THIS PAGE DOES NOT APPLY TO PREFORMED RETAINING WALLS IN STANDARD 3484.3. - WALL MOUNTED FUSE CABINETS REQUIRE 8' MINIMUM CLEARANCE IN FRONT OF THE CABINET FOR HOT STICK OPERATION.
LANDSCAPING MATERIALS. - ME OPERATING CLEARANCES DESCRIBED IN THIS STANDARD SHALL APPLY TO BUSHES, HEDGES AND OTHER
LOW GROUND COVER IS EXCLUDED.
- * PAD SIDE OPPOSITE WINDOW OPENING (SEE STANDARD 3414)
- ** 5 FOOT OPERATING CLEARANCE IS REQUIRED ONLY FOR HOT STICK OPERATION OF LOADBREAK EQUIPMENT (CABLE TAP(S) WlTH LOADBREAK ELBOWS LOCATED ON THE STREET SIDE OF HANDHOLE), IF THIS LOADBREAK EQUIPMENT IS NOT PRESENT OR NO FUTURE CABLE TAPS ARE ANTICIPATED IN THIS AREA, MAINTAIN 18"
MINIMUM CLEARANCE.
*** REl'AINING WALLS ARE NOT REQUIRED WHEN THE SLOPE REMAINS 6" BELOW AND PARALLEL TO THE JOINT BETWEEN THE BASE AND COVER OF TERMINATOR, SEE STD. 3523.4A
Information Removed
REVISION
DATE 7-26-02
AppD @///
SDG&E ELECTRIC STANDARDS
CLEARANCE REQUIREMENTS FOR PAD-MOUNT AND 3483.2
SUBSURFACE EQUIPMENT FROM ABOVE GROUND OBJECTS
REFERENCE:
SERVICE GUIDE
3483.2A
A SEE STANDARDS 3486.2 FOR RETAINING WALL REQUIREMENTS AND ONE-PHASE TRANSFORMER PAD LOCATIONS SHOWING CATV AND/OR TELCO LOCATIONS.
8. SEE STANDARDS 3486.3 FOR CLEARANCES BETWEEN SDGLE FACILITIES AND OTHER ABOq GROUND OBJECTS.
lndicotes Latest Revision I x I Completely Revised I I New Page Informotion Removed
~
SDG&E ELECTRIC STANDARDS REVISION
CLEARANCE REQUIREMENTS FOR PAD-MOUNT AND DATE 3-1-02
APPD I&EBB57/d SUBSURFACE EQUIPMENT FROM ABOVE GROUND OBJECTS
SCOPE: THIS STANDARD SHOWS THE EQUIPMENT GROUNDING INSTALLATION USED TO PROVIDE EQUIPMENT
GROUNDING. THIS METHOD SHALL BE USED WHEN DIFFERENT PARTIES ARE RESPONSIBLE FOR THE
CONDUIT AND PAD INSTALLATION. USE PREFERRED OR ALTERNATE TRENCH GROUND WIRE IN
STANDARD 4510 WHEN THE SAME PARTY IS RESPONSIBLE FOR CONDUIT AND PAD INSTALLATION.
-
ITEM
1
2
3
4
5
TOP VIEW
STOCK ASSEMBLY NUMBER UNITS
81 281 6 @
DESCRIPTION QUANTITY
- PAD (WICAL) 1 REFER TO WORK ORDER
WIRE, BARE COPPER, #2, 7 STR. SOFT DRAWN AS REQ'D.
GROUND ROD, 5/8' X 8'-0", COPPERWELD 2 603072 . GD-T/R
GROUND ROD, CLAMP 2 23001 6
COMPRESSION CONNECTOR 1 257760 @
t 6' MIN. -1 i
SERVICE GUIDE lndicotes Latest Revision 1 I Completely Revised New Poge
I
Information Removed
?------
GROUND ROD CLAMP
GROUND CLAM
6" APPROX. I I
DATE 1-1-98 1 EQUIPMENT GROUNDING INSTALMTION I 4512.1 I
SCOPE THIS STANDARD SHOWS EQUIPMENT GROUNDING INSTALLATION USED WHEN (PREFERRED 1 ) OR (ALTERNATE) TRENCH GROUND WIRE IS INSTALLED, STANDARD 451 0. SUBSTITUTE GROUND RODS
SHOWN ON STANDARD PAGE 4512.1 FOR TRENCH GROUND WIRE IF (PREFERRED I ,) OR (ALTERNATE)
INSTALLATIONS DO NOT APPLY.
TOP VIEW i
0
- 24” EXPOSED I
SERVICE GUIDE Indicates Lotest Revision Complete1 y Revised
*
Informotion Removed New Poge
/- II II II
SECOND TRENCH GROUND WIRE
REQUIRED ON
STD. PC. 4510.1
DATE 1-1-98
APPD @/c)”(y_ EQ U I P M E NT GR 0 U N D I N G I NSTALLATI ON 451 2.2
* 24" EXPOSED TAILOUT
Indicates Latest Revision Completely Revised SERVICE GUIDE
i
New Page Information Removed
F"AL @ GRADE
1
GROUND WIRE
/ / SECTION VIEW
(PAD WITH 3312 HANDHOLE(S)
* 24" EXPOSED TAILOUT
COMPRESSION
GROUND WIRE '
SECTION VIEW
(3416 PAD WITH 331 1 HANDHOLE)
\
'I
ITEM DESCRIPTION
1 PAD
2 WIRE, BARE COPPER, #2, 7 STR. SOFT DRAWN
3 CONNECTOR, COMPRESSION
INSTAUATION:
A IN CASES WHERE THERE ARE TWO GROUND WIRES, SQUEEZE THE GROUND WIRES TOGETHER WITH A
OCOMPRESSION. CONNECTOR. WHERE THERE IS ONLY ONE TRENCH GROUND WIRE, ADD THE SECOND 24" TAILOUT WIRE. SECOND 24" TAILOUT WIRE.
B (PREFERRED I ) OR (ALTERNATE) TRENCH GROUND WiRE IS REQUIRED WHEN PREFERRED II EQUIPMENT
GROUNDING INSTALLATION IS NOT INSTALLED.
SDGdrE SHALL FURNISH AND INSTALL THE COMPRESSION CONNECTOR AND THE
1
STOCK ASSEMBLY NUMBER UNIT QUANTIN
1 REFER TO - WORK ORDER
AS REQ'D 812816 GDWIRE
AS REQ'D 257760 -
REFERENCE: \
I
SERVICE GUIDE
@SEE STANDARD 3484.1 FOR PAD INSTALLATION USED FOR MOUNTING PAD-MOUNTED EQUIPMENT.
@SEE STANDARD 4002.2 FOR WIRE INFORMATION.
@SEE STANDARD 4510 FOR (PREFERRED I ) AND (ALTERNATE) TRENCH GROUND WIRE INSTALWION.
lndicotes Lotest Revision Completely Revised New Poge lnformotion Removed
REVISION SDG&E ELECTRIC STANDARDS
G. SEE STANDARD 4514 FOR GROUNDING TELCO CONDUCTOR IN PAD-MOUNTED EQUIPMENT.
.
DATE 1-1-96 EQ U I P M E NT G R 0 U N D I N G IN STALIAT IO N 451 2.4
APPD $&/e
__ ~~ ~ ~~
SCOPE: THIS STANDARD SHOWS EQUIPMENT GROUNDING INSTALLATION USED WHEN (PREFERRED I ) AND
SHOWN ON STANDARD PAGE 4512.1 FOR TRENCH GROUND WIRE IF (PREFERRED I ) OR (ALTERNATE) INSTALLATIONS DO NOT APPLY TO PROVIDE EQUIPMENT GROUNDING FOR TRANSFORMERS INSTALLED
ON 3426 h 3427 PADS INSTALLED OVER 3314 HANDHOLES.
(ALTERNATE) TRENCH GROUND WIRE IS INSTALLED, STANDARD 4510. SUBSTITUTE GROUND RODS -
24" EXPOSED
TOP VIEW
'b ?
COMPRESSION CONNECTOR
\ I: ' ' ,I- -
1
BILL OF MATERIAL:
' L GROUND WRE
i
I
! i
'\
ASSEMBLY UNITS ITEM DESCRIPTION QUANTITY STOCK NUMBER
1 PAD 1 REFER TO WORK ORDER -
2 WIRE. BARE COPPER, #2, 7 STR. SOFT DRAWN AS REQ'D. 812816 @ GOWlRE
3 CONNECTOR, COMPRESSION AS REQ'D. 257760 (B> -
INSTALLATION:
A BUTT TRENCH GROUND WIRE AGAINST 3314 HANDHOLE.
B IN CASES WHERE THERE ARE TWO GROUND WIRES, SQUEEZE THE GROUND WRES TOGETHER WTH A COMPRESSION CONNECTOR. WHERE THERE IS ONLY ONE TRENCH GROUND WIRE, ADD THE SECOND 24" TAILOUT WIRE. SOG&E
SHALL FURNISH AND INSTALL THE COMPRESSION CONNECTOR AND THE SECOND 24" TAILOUT WIRE.
8
REFERENCE
0 SEE STANDARD PAGES 3426.4 8i 3427.4 FOR THREE-PHASE TRANSFORMER PAD INSTALLATION.
E SEE STANDARD 4510 FOR PREFERRED AND ALTERNATE TRENCH GROUND WIRE INSTALLATION. 8 @ SEE STANDARD PAGE 4512.1 FOR (PREFERRED II ) EQUIPMENT GROUNDING INSTALLATION.
@ SEE STANDARD 4002.2 FOR WIRE INFORMATION.
SERWCE GUIDE Indicates Latest Revision Completely Revised New Poge Informotion Removed
SDG%E ELECTRIC STANDARDS REVISION
451 2.5 EQUlPM EN T GROUNDING IN STALL ATlON DATE 1-1-96
APPD m/qy
--
APPENDIX D
MISCELLANEOUS STANDARD DRAWINGS
i
i CARLSBAD MUNICIPAL WATER DISTRICT
STANDARD DRAWINGS I
\
12" CAST IRON GATf~CAP PER DETAIL HEREON.
'rO'6E FITTED WITH MALE & SEWER CLEAN-OUT RISERS
SCREW IN WJG.
GATE CAP (HEAVY DUTY)
SEWER MAIN CLEANOUT
NOTES
I. GATECAPSHAU-BELABELEDSEWER.
2. CLEANOUTS MAY BE USED WITH, W.C. SEWER MAIN.
3. RISER SHALL BE SAME DIAMETER AS SEWER MAIN.
CARLSBAD MUNICIPAL WATER DISTRICT .Revision 6y brwd 8) STANDARD ORAWINGS FOR SEWER
SEWER MAIN CLEANOUT DWG. NO. S6 J
CLEMI - Om IN YARD To BE CUERED WITH IO' PLASTIC GOVER BY CAf?SN PART NQ 910 O.AE CLEAN- CUTS IN CONCRETE TO HAVE CONCRETE BOX WITH TRAFFIC UD 8Y JBR OR BROOKS PART NO. 3-R-T.
SEWERaEAN-OUTRlSERSTOBE FITTED WITH MAE SCREW IN PLUG.
.
NOTES t
I , THE LATERAL SHALL 8E 800000 THE SAME AS THE MCUN LJNE SEWER.
2. IN NO CASE SHALL A LATERAL CONNECT To THE SEWER MAIN DIRECTLY ON TOP OF THE RE.
MlNIMUM SLOPE.
4. Au, JOINTS ON SEWER LATERAL PIPE SHALL BE COMPRESSION TYPE OR APPROVED SOLVENT WELD.
3. SEWER IATW SHLIU. HAVE A 2%
7 CURB FACE
MIN.
\
5. AS- BUILT SEWER LATERAL LOCATIONS SHALL BE FURNISHED Tz) THE CITY INSPECTOR ON FORMS PROVIDED PRIOR TO FINAL APPROVAL OF WORK.
6. ALL LATERAL TRENCHES TO PROPERTY LINE AND SEWER MAIN TRENCHESTO BE COMPACTED PER S5.
GRADE AFTER FINAL FINISH GRADING. 7. CLEAN - OUT TO BE ADJUSTED TO
1. SEE SPECIFICATIONS FOR 8 SOLDERING REQUIREMENTS.
OR 2. SEE SPEClFlCATlONS FOR SHALL BE SAME SIZE AS PAINTING REQUIREMENTS. AIR VENT INLET. @ 3* SEE IMPROVEMENT PLANS
FOR ASSEMBLY SIZE.
4. ALL VALVES AND RrnNGS
5. POSITON ANODE MIDWAY BETWEEN PIPELINE AND VALVE BOX.
ION APPR DATE, BELOW SURFACE I & 2” AIR-VACUUM
VALVE ASSEMBLY S APPURTENANCE
STD. DWG. NO.
MAY 2003 Wl
U
ITEM DESCRIPTION
DOUBLE BAND BRASS SERVICE SADDLE. 1 2 CORP. STOP 1" WATER SERVICE. 3 CORP. STOP 2" WATER SERVICE. 4 CORP. STOP 1" AIR VACUUM VALVE ASSEMBLY. CORP. STOP 2" AIR VACUUM VALVE ASSEMBLY. 5
6 1" MANUAL AIR RELEASE ASSEMBLY. 7 2" BLOW-OFF MANUAL AIR RELEASE ASSEMBLY.
8 2" BLOW-OFF / AIR RELEASE ASSEMBLY.
D.I. MAIN
r-ll
SPEC /DWG
3 4 7 7 5 6&7 6&7
FOR WATER SERVICE
CONNECTION ( TYP. )
STEEL MAIN
FIELD WELD ( TYPICAL ).
TEM DESCRIPTION
1 CL 3000 STEEL COUPLING - STEEL WELDED. 2 SEE DRAWING NO W9 3 INSULATING BUSHING - NPT LEXAN OR DERLIN. 4 9" DIA. 10 GA. SADDLE.
--
MORTAR ALL AROUND.
SPEC/DWG
d
DIELECTRIC CONNECTION :VISION APPR DATE
TO STEEL MAIN
-7
-2
_f
STD. DWG. NO. WIO MAY 2003
i
SECTION A-A'
NOTES:
1. DIELECTRIC CONNECTlONS SHALL BE REQUIRED ON ALL AIR AND VACUUM VALVE ASSEMBLIES, MANUAL AIR RELEASE
AND WATER SERVICE ASSEMBLIES WHERE COPPER TUBING OR BRASSS PIPE CONNECIONS ARE MADE TO STEEL MAINS.
ASSEMBLIES, BLOW-OFF ASSEMBLIES
I 6 I 1" & 2" COPPER SERVICE PIPE TYPE "K" SOFT 1. I
I I
SECTION A-A SECTION B-B
ITEM DESCRIPTION 1 2 3 4
5
6 POLYETHYLENE WRAP
VAL BOX & COVER MlH NON-SKID C.I. COVER AND LIFT HOLE, MARKED 'WATER". VAL BOX & COMR FOR NORMALLY CLOSED VALM.
VAL BOX & COVER MARKED 'RECYCLED WATER'. 8' C900 PVC OR ASPHALT COATED WELL CASING.
CONCRETE CUR IDENTIIT CONC. BY CLASS OR COMP. STRENGTH
DOMESTIC WATER
SPEC/D WG
RECLAIMED WATER
VALVE BOX WSlON A PPR DATE
ASSEMBLY
NOTES:
1. IN NON-ROAD AREAS PLACE MARKER 2. SEE DRAMNG NO. 23 FOR GATE VALVE POST NEXT TO VALVE BOX ASSEMBLY AS IMECTED BY ME lJ"NEER. ( SEE DRAWING NO. 23 ).
EXTENSION.
3. UPPER SIDE OF LID TO RECIEVE 2 COATS OF PAINT. SEE SPEClFlCA ONS FOR PAINTING REQUIREMENTS, 4 PAGE 4 ).
STD. DWG. NO. WI3 MAY 2003
VERTICAL BEND.
HORIZONTAL & VERTICAL BEND.
ITEM DESCRlPTlON
1 CONCRETE THRUST BLOCK. (560-C-3250) 2 POLYETHYLENE WRAP. 3 NO. 4 REINFORCING STEEL.
4 VALVE BOX ASSEMBLY. 5 FL X RT OR FL X MJ GATE VALVE.
g TI' TEE (TOP VIEW). -
SPEC/DW G
TEE (SIDE VIEW).
ON APPR DATF. CONCRETE THRUST BLOCKS
FOR NON-RESTRAINED JOINTS
2. FOR A.C. PIPE A MIN.'3'-3" TO A 6'-6" MA LENGTH INTO AND OUT OF ALL FITTINGS.
STD. DWG. NO.
MAY 2003 W15
NOTES:
1.FllllNGS SHALL BE DUCTILE IRON FOR D.I.P. & P.V.C.; CAST IRON FOR A.C.P. (CEMENT UNED SHORT BODY).
3. CONCRETE SHALL BE 6 SACK, 3250 P.S.I.). A MIN. 3 DAY CURING TIME BE IC ORE HYDROSTATIC TEST.
4. SEE DWG'S. NO. 17 & 18 FOR REDUCER, PLUG, & BUllERFLY VALVE THRUST
Fl NI SHED SURFACE (TYP.) 1 I
ITEM DESCRIPTION
1 GATE VALVE 2 POLYETHYLENE WRAP. 3 4 CONCRETE THRUST BLOCK. (3250 P.S.I.) 560-C-3250 5 VALVE BOX ASSEMBLY.
NO. 4 REINFORCING STEEL.
I
SPFC,/D WG
19 13
REI NFORCl N G TRENCH ELEVAION STEEL DETAIL. P.V.C. & D.I.P. PIPE,, TRENCH 'ELEVATION
PVC PIPE
3FVlSlON APPR DATF GATE VALVE INSTALLATION
P.V.C., D.I.P., A.C.P. & STEEL PIPE.
-I 11-1 I c I 1-1 I r--I
STD. DWG. NO. W16 MAY 2003
TRENCH SECTION (TYPICAL)
TRENCH ELEVATION STEEL PIPE
5
ED
ON APPR DATF
THRUST BLOCK BEARING AREAS
STD. DWG. NO.
MAY 2003 W19
NOTES:
ITEM DESCRIPTION 1 2
3 4 COPPER OR BRASS NIPPLE. 5 BRASS UNION. 6 APPROVED BACKFLOW PREVENTER ASSEMBLY.
METER AND VALVE ( BY DISTRICT
COPPER OR BRASS 90' ELBOW ( SOLDER JOINTS OR THREADED FITTINGS 1. WE K HARD OR WE L HARD &PER OR BRASS RISER.
1. MERE SHALL BE NO FllllNGS OR CONNECTIONS BETWEEN THE METER AND BACKFLOW ASSEMBLY.
SPEC/DWG
9
I 3. DO NOT INSTALL IN AREA SUBJECT TO FLOODING.
8
P
METER BOX ( BY DISTRICT 1.
2'
MAX '
EMSON APPR DATE 2 INCH AND UNDER
BACKFLOW INSTALLATION
- n- - - - I1 // I1
STD. DWG. NO. w20 MAY 2003
PRIVATE CONSUMERS RESPONSIBILITY
TO BE INSTALLED PURSUANT TO MUNICIPA CODE
CALIFORNIA ADflINISTRATIVE CODE. BOOK 14.08.0104001-SEC.5 & TITLE 17 0 1 THE
$2 !i
‘T B
t . I
3FMSION APPR D ATE EXTENSION STEM AND
MARKER POST
-a
STD. DWG. NO. W23 MAY 2003
-.- 6”.
DOMESTIC WATER
NOTES:
1. ENTIRE MARKER POST SHALL BE PAINTED PRIOR TO INSTALLATION.
4= 1 i 9
I
i I
I t
$18” IF VALVE SET AT FINISH GRADE.
RECLAIMED WATER
EXTENSION STEM SHALL BE REQUIRED WHEN OPERATING NUT IS 5’ OR MORE BELOW TOP OF VALVE COVER.
@-
e
ITEM DESCRIPTION
1 2 470-C-2000 CONCRETE FOOTING.
3
4" STEEL PIPE. GALVANIZED / PAINTED
FILL PIPE WITH 470-C-2000 CONCRETE ( ROUND OFF TOP 1.
n n 0
SPEC/DWG
FINISHED l=-EK t
I
NOTE:
PIPE SHALL BE PAINTED IN CONFORMANCE WITH DISTRICT SPEC1 FI CATIONS.
I I 1 I MAY 2003
WRING AND INSTALLA n0N
SEE DWG. NO. W28 GREEN AREA
AT GRADE 2-WIRE TEST STATION
WITH ANODES
lEVlSlON APPR DATE
XO THERMIC
ELD
1 WG.
STD. DWG. NO.
MAY 2003 W26
CML&TC STEEL REC WA TER 1
I-NO. 12 WHITE
lHW ANODE LEAD \
HMWE PIPE LEADS
2-NO. 8 BLACK
MA GNESIUM AN ODE SEE DWG. NO. W29
SEE NOTE 1 (2 REQRD)
6' MIN (SEE NOTE 2) e h L
- WARNING TAPE
. r\l h
*', ,
NO TFS:
1. 1 ANODE SHOW, 2 ARE REQUIRED. ANODES TO BE
INSTALLED PARALLEL TO THE PIPE, 15 FEET
APART IN AUGERED HOLES 12' DEEP. ANODE LEADS TO
BE TRENCHED TO CTS AT A DEPTH OF 36".
2. INSTALL ANODES AT A 6' MINIMUM DISTANCE FROM PIPE.
NO SCALE
GRAPHITE COER
STAR nNG POWER
METAL ELDING POWER
GRAPH1 TE MOW
APPR DATF
brT STEP 1. FlLE STRUCTURE CONNECnON AREA (3 IN x 3 IN)
TO BARE SHINY METAL AND CLEAN.
STD. DWG. NO.
MAY 2003 W27 EXOTHERMIC WELD PROCESS
0 SFF 2 SJRP INSULAli’ON FROM WRE. AnACH SLEEVE
WERE REQUIRED BY MANUFACTURER. b=y STFF 3, HOLD MOLD FIRMLY WlH OPENING AWAY FROM b-3 STEP 4, REMOVE SLAG FROM CONNECllUN AND PEEN
OPERATOR AND IGNITE WITH FLINT GUN.
WELD FOR SOUNDNESS.
SURFACE WITH A BITUMINOUS COAllNG COMPOUND.
PLACE PLASTIC SHIELD CAP FIRMLY OVER CoNNECnoN.
STFP 5. COVER CONNECnON AND EXPOSED STRUCTURE
NOTES:
1. ALL WIRE WELDS SHALL BE MINIMUM 3 INCHES APART. 2. STANDARD WELD CARTRIDGES SHALL BE USED FOR STEEL SURFACES,
NO SCALE
CONCRETE CONCREE TEST BOX, SEE PAVEMENT OR
PAD 24" SQ X 4" THICK IN DWG. NO. W30
NO SCALE
TO CML&TC / STEEL REC / WATER LINE 1
WRE I.D. LEGEND
ON APPR DATF 2-WIRE TEST STATION WITH ANODES
WIRING DIAGRAM
SIZE LABEL IDEN llFlCA n0N - WIRE -
A&B 2 - NO 8 HMWPE SlL/CML&TC RW
STD. DWG. NO.
MAY 2003 W28
NOES:
1. NO WRE OR CABLE SPLICES ARE PERMITED EXCEPT AS
INDICATED IN THE DRAWINGS OR AS SPECIFICALLY APPROVED BY THE ENGINEER.
2. WRES SHALL BE TAGGED USING MINIMUM 10 PT. FONT AND CONTAIN: PIPELINE MATERIAL & SIZE DA lE INSTALLED PIPELINE STAllON NO.
3, PROvlDE 18" SLACK WRE AT WLD TO PIPE AND COILED IN EST BOX.
MAGNESIUM INGOT DlMEN SI ON S:
ON APPR DATF. MAGNESIUM. ANODE
5" X 6" X 32" LONG INGOT WEIGHT 48 LBS.
PKGD WEIGHE 105 LBS.
(APPROX.)
STD. DWG. NO.
MAY 2003 W29
CHEMICAL COMPOSITION (HIGH POTENTIAL)
ELEMENT
Aluminum Manganese
Copp er. Nickle
Iron
Other
Magnesium
CON TENT %
0.01 0. 0.50 TO 1.30
0.02 MAX 0.001 MAX 0.03 MAX
0.05 MAX
BALANCE
NO SCALE
1-
3- 1/4
NO SCALE
CAST IRON COVER MARKED AS SHOW
3FMSION APPR DATF CONCRETE TEST BOX
CONCRETE BODY
COVER EIGHE 12 LBS. BODY WIGHE 54 LFS.
STD. DWG. NO.
MAY W30 2003
7/8 l?/
NOES:
1. ALL AT GRADE TEST STAllONS SHALL BE THE CIRCULAR,
CONCRElE, AT-GRADE TYPE WllH A METAL LID.
A. BOTTOM OF TEST BOX SHALL BE NAM SOIL.
B. A REINFORCED CONCRETE PAD (24" SQUARE X 4" WICK)
IS REQUIRED AROUND TEST BOXES LOCATED IN UNPAVED AREAS.
C. PLACE EST BOX BEHIND SIDEWALK WITH APPROVAL OF CITY OF CARLSBAD. DO NOT PLACE IN STREET OR MEDIAN.
I I I I
I
FVISION
I INSUI A llNG MA FRIAI S I I
APPR DATT. STD. DWG. NO. W31 MAY 2003 BURIED INSULATING FLANGE
I 1 GASKET - TYPE "E" GI0 GLASS W/ RECT: O-RING
SLEEVE -Gio GLASS I WASHER - GI0 GLASS
I i SEEL WASHER & NUT
(BOTH SIDES)(:! PLS)
INSULA llNG WASHER
EXTERNAL PElROLA NM
SPECIFICA TONS
DWG. NO. W27
.D I SEE
NOES:
1. FULL LENGTH INSULAllNG SLEEVES REQUIRED AT ALL MRU-FLANGE BOLE OR STUDS. HALF LENGTH SLEEVES REQUIRED AT THREADED
BOLT HOLES AT VALVE BONNET AND BASE.
ON MIS SHEET. 2. INSTALL EST BOX BEHIND CURB SIMILAR TO DETAIL 1
NO SCALE
CARLSBAD MUNICIPAL WATER DISTRICT
FL EXIBL E COUPLING
I NO SCALE I
I
4
e- \.- 7
-_
... .. ..
TEE VAL VE
\
N 0 TES:
1.
2.
3.
4.
ALL WIRE WELDS SHALL BE 3” APART MIN.
ALL BOND WIRES SHALL BE INSTALLED AT MINIMUM LENGTHS.
BOND WIRES SHALL NOT BE INSTALLED ACCROSS INSULATING JOINTS.
BOND WIRE SIZE SHALL BE AWG NO 2. TWO ARE REQUIRED
ONE NO. 6 AWG HMWPE IS REQUIRED FROM PIPE TO VALVE BODY, .SPOOL, COUPLING, AND TEE.
REVISION APPR DATE
.! MECHANICAL JOINT BOND STD. DWG. NO.
MAY 2003 W32
I I I I I I
\
SAN DIEGO COUNTY REGIONAL
STANDARD DRAWINGS
I
Finished Grade
Revision By Approved Oate
3RICINAL Porkinson 02/95
E .- i
C .- I
In t
c
RECOWENDED ey THE SAN OIECC
SAN DIEGO REGIONAL STANDARD DRAWING REGIONAL STANDAROS CDMMITEE
TRENCH DETAIL P.V.C. AND/OR
DRAMNG 1-25 NUMBER COPPER PIPE (3" AND SMALLER)
Imported Topsoil or amended
rock free Native Soil.
E .- i
X 0 I
t c
(v
7 Native soil free of large (3" dia. or greater) rocks and debris.
min. Sand, Class A Topsoil, or approved equal.
Polyvinyl Chloride or Copper Pipe
Details not shown ore same as above.
MULTIPLE PIPE INSTALLATION DETAIL
(non-pressure pipe only, see Note 6 for pressure pipe)
NOTES 1. Backfill material shall be compacted to a relative compaction of 90% or more. 2. All P.V.C. pipe shall lay free in the trench with no induced strain and with sufficient allowonce for extansion and contraction as recommended by the manufacturer. 3. Teflon tape, 3/4
4. The letter W shall be stamped or chiseled on the improvement (curb-sidewalk) directly above the pressure pipeline. 5. All plastic pipe under pavement shall be installed in a P.V.C. sleeve. 6. Minimum clearance between pressure pipes shall be 2 inches.
wide shall be used on all threaded connections.
- Distance between gate posts is gate length shown on plans -7
Revision By
ORIGINAL
Repeat op osite SI&
I
10.. diameter stop footing Omlt if roadway IS concrete
HALF ELEVAmON DOUBLE WING GATE
NOTES 1. All footings shall be 520-C-2500 concrete.
2. The following items shall be furnished and installed only when shown
on the plans and/or called for in the special provisions:
a. Borbed wire b. Extension post outside diameter of post.
” I 3. Chain link fence shall conform to Section 206-6 of the Standard Specification for Public Works Constkctian unless ~
RECOMMENDED ey THE SAN MEC SAN DIEGO REGIONAL STANDARD DRAWING REQ~~ *u”KWRCJ cc+~tTEf Approved Date
A.Kerchevol 12/75 I
3121’, a. Ch6iipc)ton R.C.E. 19246 Dole CHAIN LINK GATE DRAWING M-5 NUMBER
on this drawing.
EXTENSION POST AND BARBED WIRE
specifically noted
Clear opening
shown on plans.
Latch post Gate Post
over 3’.
12’ min. dia. LEGEND ON PLANS - wAu( GATE
10' mox. 10' mox.
c
,.r Post Top Reinforcing Tension Wire 7
REcouvENooD BY ME SAN DIEC REQWAL S~ANCJ~S CQMM~~I SAN DIEGO REGIONAL STANDARD DRAWING Revision By Approved Date
ORIGINAL AKercheval 12/75 I
3/.1'A
-L. Ch6irpeh R.C.E. 19246 Dote
DRAWlNG ~-6 NUMBER
CHAIN LINK FENCE
J of 'over 5'.
bqeterpf footi = 4 times outsde diameter? post.
NOTES
1. All footings shall be 520-C-2500 concrete.
2. The followinq items shall be furnished ond installed only when
shown on the plans ond/or called for in the speciol PraVisionS.
0. Borbed Wire
b. Extension Arm
e. Top Horizontal Roil
3. Chain link fence sholl conform to Section 206-6 of the
Stondord Specifications for Public Works Construction
unless specificoily noted on this drowing.
4. See Standard Drowing M-20 for additional details.
EXTENSION ARM AND BARBED WIRE
LEGEND ON PLANS
wires
cement
Revision Approved Ode
IRIGINAL Bahmanion 4/86
END
POST ASSEMBLY
RECWMENDU) BY THE SAN DIE( SAN DIEGO REGIONAL STANDARD DRAWING REGIONAL STANDARDS COMMITIE
I
CHAIN LINK FENCE Ch6irpchn R.C.E. 19246 Date
DRAWING ~-20 NUMBER DETAILS
Tension Wires
tine posts at 1000'max. intervals braced
and trussed in both directions. bd '"4
LINE POST BRACING
Horizontol brace with 3/8' steel truss rods.
GATE ASSEMBLY
KRIEGER & STEWART
STANDARD DRAWINGS
I
!
1,
W z
APPROVED KRIEGER k STEWART, ENGINEERING CONSULTANTS
DATE
TRENCH BACKFILL, 8" MAXIMUM SIZE IN LAYERS NOT EXCEEDING 1' IN
OUND SURFACE, COMPACTED 90% RELEATIK COMPACTION,
1" MAXIMUM SIZE BASIC PIPELINE
DESIGN FLOWLINE
PROVIDE UNIFORM BEARING FOR PIPE ON BOTTOM OF TRENCH.
KRIEGER 8c STEWART
INCORPORATED
PIPE DIAMETER TRENCH - BOllOM WIDTH (INCHES)
12 OR LESS
14 THRU 18
20 MRU 27 3.0 4.0
R.C.E.
II -
I1
I 30 MRU 36 I 4.0 I 5.0 I
PIPELINE TRENCH
NOTES:
1. PIPELINE COVER SHALL BE 42" MINIMUM UNLESS SPECIFIED OTHERWISE.
2. TRENCH SIDES SHAU BE SLOPED OR SHORED IN ACCORDANCE WITH CAL OSHA CONSTRUCTION SAFEW ORDERS FOR TRENCH DEPTHS 5' AND GREATER.
3. ALL EXISTING PAVEMENT SHALL 8E SAWCUT PRIOR TO TRENCHING, AND WHERE TRENCH SIDES SLUFF AND PAVEMENT BRE4KS AWAY, IT SHALL BE SAWCUT PRIOR TO PERMANENT PAVEMENT REPAIR.
4. WHENEVER EXISnNG CURBS ARE BEING USED FOR GRAD€ CONTROL, PIPELINES SW BE WD ON PROJECTED CONTINUOUS SLOPES THROUGH LOCALIZED HILLS, HUMPS, AND MOUNDS AS AT STREET INTERSECTIONS AND CHANNEL BERMS. PIPELINE GRADES SHALL BE SELECTED TO MAINTAIN MINIMUM COVER WITH CONTINUOUS PIPELINE SLOPE. PIPELINE TRENCH DEPTHS SHW BE INCREASED TO ACCOMPLISH SAME AND PIPELINE COVER SHALL BE INCREASED ACCORDINGLY.
5. WHENEVER EXISTING UTILITY FACILITIES, EXCEPT SEWERS, ARE ENCOUNTERED, PIPELINES SHALL C!J3R THEM BY 12" MINIMUM, BOTH HORIZONTALLY AND VERTICALLY, CONSISTENT WITH ABOVE PIPELINE REQUIREMENTS. PIPELINES SW CLEAR SEWERS IN ACCORDANCE WITH STANDARD DRAWING W102A AND W102B. SPECIFIED CLEARANCES OR SEPARATIONS SHALL NOT BE REDUCED UNLESS ORDERED OR PERMmD BY DISTMCT. PIPNNES SHALL NOT BE IN CONTACT WITH OR REST AGAINST OTHER UTILITY FACILITIES.
6. WHERE BOllOM OF EXCAVATION IS IN ROCK WHICH CANNOT BE EXCAVATED TO PROVIDE UNIFORM BEARING FOR THE PIPE, TRENCH SHALL BE OVEREXCAVATED 8" MINIMUM AND REFILLED WITH SELECT EXCAVATED MATERIAL OR IMPORTED BACKFILL MATERIAL COMPACTED TO 90% MINIMUM RELATIVE COMPACTION.
-
I1 II I STANDARD DRAWING W101 RNISDN BY I DATE
1 TRIM PIPE 10 ACCWUOMTE MPICAL BUTT STRAP WITH HANDHOLES
AWWA. CLASS'O" COMPANION FLANGE AND BLIND FLANGE
6-MAMCTER STANDLRD wntttl CEYM KIITAR LINED WPPLE
1
'1-9 Vl6' PLATE FOR 6.UWCTrR -
"1.1 I/4'PLnTE FOR 24' DIAMmER-
ZO-DlwER PIPE
END VIEW 36' DIAUETER PIPE SlDE VIEW
TYPICAL CUT-TO-FiT DETAILS HAKWOLES (IWZ *t REWIRED)
MNG Wl#
LAP WELD BELL \
M-TO-FIT. HOD COATING AS REWREO FDR CUT-TO-FIT, lHW FIM PPPLY TO CM(W3E JOINT I
WhTUIlAAIN '1 WPTERMAIN
lTPE 1 OR P CUT-TD-FIT OPTIONAL TO THE TYPE I CUT-TO-FIT CMITRACTOR, WESS OTHERWISE SPECIFIED TYPE m CUT-TO-FIT
M-TO-FTT ON EITNER PIPE OR CJ SPECIFIED. HOLO WTlNG AS REOVlREO FOR CUT-TO-FIT, THEN FIELD APPLY TO COMPLETE JOINT.
TYPE n CUT-TO-FIT
TYPICAL JOINT REPAIR DETAIL
[FIELD CONSTRUCTION1
INSTALL HANDHOLES
REINFORCCD PER ~y\'i 12' REWOVE BLDW OUT GASKET WERE - POSSIBLE INSTALL RLLER ROD AN0
(imz AS REOMRED)
STANDARD mnw*rt wm WELD WP~RTIGHT.
WATER WIN
EXlSTlNG BELL END EXISTING SPIGOT MD
I KRIEGER & STEWART INCORPORATED
1 APPROVED : KRIEGER L STEWART, ENGINEERING CONSULTANTS
R.C.E.
II 1 WELDED STEEL PIPE CUT-TO-FIT & JOINT II
II I -- REPAIR DETAIL
II I1 I STANDARD DRAWING W137
REVISION I Br I DATE
I
APPENDIX E
I ', CMWD'S APPROVED MATERIALS LIST FOR USE ON
CONSTRUCTION OF POTABLE AND
RECYCLED WATER FACILITIES
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