HomeMy WebLinkAboutPIP 89-13; Mercotac; Planned Industrial Permit (PIP) (5)SAN DiEGO CA 921 21
71 67 CONSTRUCTION CT. Ph 714 566-2750
December 7, 1989
City of Carlsbad
Planning Commission
Mercotac, Inc. takes pride in having a high quality
product line. We also take pride in running a company which is conscious of a healthful and enjoyable work
environment.
We have passed all inspections of San Diego Health Dept.
Hazardous Materials: Use d Handling, San Diego Fire Dept.
Combustables: Use and Handling, as well as tests by
Liberty Mutual Ins. Co. (our workmans comp. carrier). Liberty Mutual conducted several routine tests by their
industrial hygenist Eileen Burke-Klein in June of this year.
A copy of the test report is attached.
We are designing work stations for our new facility
to further perfect the collection of any possible
fumes from the work environs.
The amounts of hazardous materials are as follows:
Cutting Oil-------------------- 55 gals
(18 month supply)
(2 mos.) recycled: Safety Kleen Co.
4% Silver Plating Solution----- 4 qts
(brush plating, 8 mos supply)
(1.5 pts/mo go into product)
* Solvent for cleaning parts----- 10 gals
Mercury------------------------ 4 pts.
Elemental Mercury is dispensed through a tiny dispensing
needle into the cavity in the product then immediately
covered with mineral oil to prevent oxidation or evaporation.
* We are in the process of converting all our
parts cleaning to non-petrochemical cleaners.
Respectfully,
Bruce Enigenburg,' Manager
_c ,
MTECH
American Technical Laboratories. Inc. Chemlcal Analysis - Consultation 8909 Complex Drive - Suite F
Research- Product Development San Diego, California 92123
(714) 560-7717
Mercotac, Inc.
7167 Construction Court San Diego, California 92126
LABORATORY NO. 0799-80
DATE OF REPORT September 15, 1980
DATE RECEIVED September 10, 1980
IDENTIFICATION I. H. Survey
REQUEST Determine Airborne Mercury Levels
WORKPLACE DESCRIPTION
The workroom consists of a single room ZOx18~8'(ceiling). Liquid mercury is added to very small receptacles to act as a liquid bearing and electrical con- tact. All operations are manual, and occasional spills into the carpeting occur. There is no ventilation in the room except for a fan for cooling pur- poses.
SAMPLING
-. Two area samples were taken. One was placed on the floor where mercury may
spill; the other was placed in the center of the table where mercury is dis-
pensed. Air was pulled through special charcoal tubes (MSA) in order to trap
the mercury vapor. .
Area Fl-ow Rate Ti me Vo 1 ume
F1 oor 0.5 Rpm 1007-1 118 35.5 R
Tab1 e 0.5 Epm 1006-1 11 9 36.5 R
ANALYSIS
After acid extraction of the charcoal tube, the sample was analyzed by cold vapor atomic absorption spectrometry. Mercury mg/m3 - Are a Found TLV-TWA
Table .025 .05
F1 oor .Oll .05
- continued -
Lab No: 0799-80 Page -2- Amtech
CONCLUSION
The mercury in the air is surprisingly low, and is, in fact, below the TLV. We caution, however, that the shortness of the test does not allow one to assume that a thorough time weighted average (TWA) would yield the same results. This consideration notwithstanding, it would appear that the work- place is reasonably safe.
RECOMMENDATIONS
1. Place a carpet in the area where spillage can occur, but use a carpet that can be shaken out each day.
2. Relocate the mercury filling and handling operation to ah area which can be exhausted. The type of exhaust system should take the filling techniques into consideration. A hood with side exhaust (instead of rear or ceiling exhaust) might be best.
-~ Respectfully ,
Bk 113-119 4354 David H. Elg@ Laboratory Dl rector
AIR SAMPLING DATA LIBERTY MUTUAL
Page 1 of- 1
P.H. Name, Location I Samples Collected by EILEEN BURKE-KLEIN I Survey Date 1
urv 0.05mn/m3 as an 8 hour time-weighted average concentration
Analytical Method 1 Lab Reference # I iodized charcoal I Cold vapor atomic absorption I45814
SAMPLE START TIME
END (Mg/cu.rn.)(w NO. LOCATION AND DESCRIPTION CONCENTRATION
91 9:23- Operator Breathing Zone (OBZ) sample collected while filling connector
1O:OO shells with mercury (0.35~~) Calibrated mercury dispenser X 1.
(Operator Ml).
42 Area sample collected 1.5' above mercury dispensing operation. 9:32-
10: 07
#3 9:41- OBZ sample collected while filling connector shells with mercury (0.03~~
10t20 Calibrated mercury dispenser X 1. (Operator #l). 1
#4 1O:OO- OBZ sample while filling connectors shells with 0.35~~'~ of mercury 1 110:~ I (Operator Pl).
10:07-
11: 15
Area sample collected 1' above dispensing point between two operators.
I 10:20-
11:12
OB2 sample collected while dispensing 0.03~~ of mercury into connector
shells. (Operator #2). NOTE: Pump leak noted.
x7 OBZ sample collected while dispensing 0.35~~ into connector shells. 10:35-
11: 25
#8 11:12- OBZ sample collected while dispensing 0.35~~ into connector shells.
11~5 I (Operator #2).
0.010
0.0085
0,0091
0.0079
0.0063
0.019
0.0081
0.024
#9 0.011 Area sample collected 1.5' above dispensing point of operation. 11:15-
/- u-1 \ 1rL I . -
These samples were collected at your facility on the date shown. The results represent conditions found at the time of the survey and may not represent conditions at other times. 'he samples were collected to estimate workplace exposure and not to determine compliance or non-compliance with legal standards.
LPW1
.I . ..
LOSS PREVENTION DEPARTMENT - INDUSTRIAL HYGIENE SERVICE
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