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1 PG&E’s Management of Oil-Filled Electrical Equipment (OFEE) and Other Materials Containing Polychlorinated Biphenyls (PCB )

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Presentation on theme: "1 PG&E’s Management of Oil-Filled Electrical Equipment (OFEE) and Other Materials Containing Polychlorinated Biphenyls (PCB )"— Presentation transcript:

1 1 PG&E’s Management of Oil-Filled Electrical Equipment (OFEE) and Other Materials Containing Polychlorinated Biphenyls (PCB )

2 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 3 POLYCHLORINATED BIPHENYLS  Man-made organic chemicals, domestically manufactured beginning in 1929  Used in many commercial applications  Insulating properties  Stability  Non-flammable

4 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 ppm while in use or in storage for reuse if:  Manufactured prior to July 2, 1979  PCB level is unknown

5 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 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 7 Potential Health Effects:  Probable Human Carcinogen  Causes cancer Animals  Non-cancer effects to the immune, reproductive, endocrine systems

8 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 § – Storage for reuse Subpart C §761.4 – Marking requirements

9 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 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 11 Federal and State Levels PCB in mineral oil (or in any material) :  Federal level TSCA: >50 ppm  State level: 5-49 ppm

12 12 Equipment that contains PCB’s

13 13 Approximate number of PCB containing equipment System Wide PGE has over 1,000,000 pieces of OFEE Of those 1,000,000 Pieces approximately 33% are pre-1979 Of those Pieces approximately 3% contain PCB’s > 5 ppm

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21 21 PGE Policy’s and Emergency Response

22 22 PG&E Policy and Procedures Our internal policy are reviewed on a regular basis to ensure that they meet the TSCA requirements.

23 23 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

24 24 PCB Waste Management Requirements

25 25 Federal Requirements:  TSCA – Class 1 TSCA permitted landfill – Waste Management Kettleman Hills – Not Accepting  RCRA  Not regulated by RCRA  California  5ppm STLC, 50ppm 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 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 two- years to all PG&E employees who might be assigned to handle PCB.


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