Method of decontaminating pcb transformers

Details Method of decontaminating pcb transformers Method of decontaminating pcb transformers

B - Operations, Transporting

08

B

B08B 7/00 (2006.01) B08B 9/00 (2006.01) H01F 27/14 (2006.01) H01F 41/00 (2006.01)

Patent

CA 2227269

Disclosed is a method for decontaminating PCB-containing transformers to obtain treated transformers containing less than 50 parts per million (ppm) polychlorinated biphenyls (PCB). The transformer is initially drained of all PCBs, then the core/coil assembly is removed. The internal surfaces of the transformer are then cleaned using a solvent wash process. A solvent is circulated through cooling fins and interior surfaces of the cooling fins are flushed with a replacement non-PCB fluid. Finally, a new core/coil assembly is installed.

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