1 PGEs Management of OilFilled Electrical Equipment OFEE
- Slides: 26
1 PG&E’s Management of Oil-Filled Electrical Equipment (OFEE) and Other Materials Containing Polychlorinated Biphenyls (PCB)
2 PCB’s in Oil Filled Electrical Equipment • Mineral Oil : to insulate, suppress corona and arcing and, as coolant • PCB: as dielectric* fluid *electric insulating by polarization as opposed to electrical obstruction
3 POLYCHLORINATED BIPHENYLS Man-made organic chemicals, domestically manufactured beginning in 1929 Used in many commercial applications § § § Insulating properties § Stability § Non-flammable
4 Common Types of PCBs Mineral Oil Dielectric Fluids: §Mineral oil-filled electrical equipment may be contaminated from its origin of manufacture through servicing and/or rebuilding activities §Must be assumed to contain 50 -499 ppm while in use or in storage for reuse if: §Manufactured prior to July 2, 1979 §PCB level is unknown
5 Common Types of PCBs Tar/Compound Dielectrics & Potting Agents: • Non-liquid type of substance contaminated with PCBs (sometimes at very high levels) that may be found in electrical equipment – Bushings, old light ballasts, PTs, CTs are examples that may be tar-filled
6 Emerging PCB Issues: § PCB in Schools (New York, Oregon, Massachusetts) suspected at any location with pre-1979 light ballasts § Leaking light ballasts § Caulking material § Glazing material § Paint
7 Potential Health Effects: § Probable Human Carcinogen § Causes cancer Animals § Non-cancer effects to the immune, reproductive, endocrine systems
8 PCB Regulations 40 CFR Part 761 = The PCB Mega Rule Subpart A § 761. 2 – PCB concentration assumptions for use Subpart B § 761. 2 – Prohibitions & Exceptions § 761. 3 – Use Authorizations § 761. 35 – Storage for reuse Subpart C § 761. 4 – Marking requirements
9 PCB Prohibitions and Exceptions No persons may use any PCB, or PCB Item regardless of concentration, in any manner other than in a totally enclosed manner within the United States unless authorized under § 761. 30
10 PCB Regulatory Information Oil-Filled Electrical Equipment Polychlorinated Biphynels § Federal and State Definition § Identification Operating Procedures § § § Emergency Response Level of Clean-up Regulatory Reporting
11 Federal and State Levels PCB in mineral oil (or in any material) : § Federal level TSCA: >50 ppm § State level: 5 -49 ppm
12 Equipment that contains PCB’s
13 Approximate number of PCB containing equipment System Wide PGE has over 1, 000 pieces of OFEE Of those 1, 000 Pieces approximately 33% are pre-1979 Of those Pieces approximately 3% contain PCB’s > 5 ppm
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21 PGE Policy’s and Emergency Response
22 PG&E Policy and Procedures Our internal policy are reviewed on a regular basis to ensure that they meet the TSCA requirements.
Our policies contain information on the following topics: PCB Procedures: § Spill categories § Degree of response / Emergency Guides § Notification requirements § Cleaning requirements / Safety Equipment § Transportation and equipment re-use § Documentation and certification requirements § Personnel training § 24 -hour hotline to reach Environmental Professional 23
24 PCB Waste Management Requirements
25 Federal Requirements: § TSCA – Class 1 TSCA permitted landfill – Waste Management Kettleman Hills – Not Accepting § RCRA § Not regulated by RCRA § California § 5 ppm STLC, 50 ppm TTLC § Soluble Threshold Limit Concentration (STLC) and Total Threshold Limit Concentration (TTLC) Regulatory Limits § Class 2 only if contaminating material is less than 50 ppm § Transformer Oil – § if less than 50 ppm oil is recycled § >50 oil is incinerated
26 Summary § PG&E started addressing the issue of PCB in 1977 § PCB procedures are based on Federal and State regulations and they are reviewed or updated every year. § Personnel training conducted every twoyears to all PG&E employees who might be assigned to handle PCB.
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