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HomeMy WebLinkAboutPIP 89-05; Andrex; Planned Industrial Permit (PIP) (3)November 4, 1992 Planning Department City of Carlsbad 2075 Las Palmas Drive Carlsbad, CA 92009-4859 em@. IO INDUSTRIES CANADA INC. 1752 GASCONY ROAD CALIFORNIA 92024 ENClNlTAS TEL: (619) 436-9083 FAX: (619) 436-1010 Attention: Christer Westman Associate Planner Dear Mr. Westman: A few weeks ago, we reviewed with you our desire to explore the possibility of starting a contract service facility in the Carlsbad area. You suggested that we provide you with the technical details of pertinent effluent or other building requirements for the proposed installation so that you could refer the inquiry to the necessary individuals or agencies for their review and concurrence that we would be in compliance with all existing regulations. One of the proposed locations and a description of the type of facility planned is given on the attached sheet. We would appreciate your immediate referral and expeditious handling of this request, so that we may proceed with our plans and negotiations in a timely manner. If you have any questions or require any additional information, please contact me immediately. Thank you for your consideration in this matter. !e io . ' i. I G; ;m : N \m i r! ._ ., .A , . ,,.I *- .. -.. 't: .. Vice President, U.S. Sales & Marketing WJF/slh copy: Lannie Allee, CB Commercial John Mason, Iotron Industries Canada /4 TECHNICAL BUILDING IOTRON CONTRACT REQUIREMENTS FOR PROPOSED STERILIZATION FACILITY Proposed Building Location: 2293 Cosmos Court Carlsbad, CA 92009 Type of Facility To Be Industrial Electron-Beam Located in Building: Accelerator Type and Manufacturer .of IMPELA - 10/50 Made by AECL Accelerator: Description of facility: Effluents from Impela-10/50 Accelerator Unit: X-Rays (gamma rays): The accelerator unit is primarily used for sterilization of medical devices using a high energy beam of electrons. The electrons which are electrically generated when the machine is turned on, are directed toward a package containing a device. The electrons will destroy living organisms thereby rendering the packaged and sealed components to be sterile. When not in use the machine is turned off and no residual effects remain. Since the electrons from the machine generate X-rays in use, which have significant penetrating power (similar to a hospital X-ray unit) the machine requires very thick concrete shielding to protect the material handlers in the immediate work areas. The concrete shielding structure is designed to attenuate the gamma rays produced by the electron beam to an acceptable level. (Shielding designed for an exposure dose rate of 0.1 mR/hour above background at ground level in accessible areas compared to natural background radiation of about 0.08 mR/hour) Ozone : Microwave Power: Heat: Ozone is produced when the electron beam traverses air. The allowable exposure limit to ozone is 0.09 ppm (per Title 17) Air is drawn from inside the shielding structure to dilute the ozone and is dispersed with a stack, 5 feet aSove the roof. The air flow of 20 complete. changes per hour (about 6,000 cfm) is sufficient to keep ozone concentrations below the allowable exposure limit. The Impela-10/50 accelerator uses microwave power at a frequency of 1300 MHz to accelerate the electron beam. The system can produce a peak power of 2.6 MW and an average power of 150 kW. The microwave fields are fully contained in the klystron unit, the waveguide transmission system and the accelerator structure. Tests have shown that the microwave power system emissions are well within the regulations of the US FCC (maximum electric field level of 10 uV/m at 1600 m). The accelerator uses about 400 kW of power, most of which is transferred as heat in the water cooling system and into the ambient air. The cooling system is composed of a primary closed loop deionized cooling water system and of a closed loop secondary cooling system with a mixture of water and glycol. The primary system cools the accelerator components and heat is transferred from the primary to the secondary system through a heat exchanger. The heat in the secondary system is transferred to the outside ambient air with an air-to-water heat exchanger.