Chapter 32: Polychlorinated Biphenyls (PCBs)
Polychlorinated biphenyls (PCBs) are most commonly found in electrical equipment such as transformers, klystrons, capacitors, and fluorescent light ballasts that were manufactured before 1979. PCBs are a diminishing hazard at SLAC because PCB-containing equipment is maintained in a manner that reduces PCB contamination, and in many cases such equipment has been replaced. As of 2004, approximately 24 pounds of the material remains in transformers, and systematic replacement of equipment will eventually eliminate PCBs from other sources completely. PCB-containing equipment or PCB-contaminated material is strictly regulated under the Toxic Substances Control Act (TSCA) and it must be handled and disposed of in accordance with the requirements described in this chapter.
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