Inventory of Equipment Contaminated with PCBs

On the territory of Ukraine, PCBs and PCB-containing equipment haven’t been produced. Although, PCB-containing capacitors and transformers made in Russia, Kazakhstan, Armenia, Poland and the Czech Republic are still used in the country. The vast majority of them are hermetically sealed three-phase step-down transformers, including general-purpose transformers with apparent power ranging from 25 to 2500 kVA as well as welding, rectifer and converter transformers with 400 to 2500 kVA rating. Transformers were filled with 160 to 4160 kg of Sovtol that served as a dielectric cooling fluid. These transformers were produced at the Chyrchyksk Transformer Plant (Chyrchyk, Uzbekistan) and the JSC "Uralelektrotyazhmash".

Types of PCB-containing electrical capacitors used in Ukraine varies a lot. As dielectric fluid they contain trichlorobiphenyl, sovol (pentachlorobiphenyl) and its mixture with various additives (e.g. nitrosovol).

The main producers of capacitors with PCBs include Ust-Kamenogorsk Condenser Plant (Ust-Kamenogorsk, Kazakhstan), Pilot Plant "capacitor" (Serpuhov, Russia) and two factories in Kamairi (Leninakan), Armenia.

Dielectrical fluids for capacitors were produced by the Soviet enterprises now located on the territory of the Russian Federation. These dielectric fluids were mostly produced under three brand names: "trichlorbiphenyl (TCB) ", "sovol" and "sovtol".

PCBs have an advantage over other oils because of their non-flammability and non-explosivity.  Due to these qualities they are widely used in production that has to deal with high temperatures, for example metallurgy.



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