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  • 2. CANCER IN HUMANS - Polychlorinated Biphenyls and Polybrominated . . .
    Hay Tarrel (1997) investigated mortality in 1958–1991 among power-company workers in Canada who applied mixtures of the pesticides 2,4-D (2,4-dichlorophenoxyacetic acid) and 2,4,5-T (2,4,5-trichlorophenoxyacetic acid) and waste transformer oil that contained up to 10% PCBs All-cancer mortality was increased among workers who first sprayed
  • Cancer incidence and mortality in workers employed at a transformer . . .
    Background: This study is an extension of a previously published analysis of cancer mortality in a transformer manufacturing plant where there had been extensive use of mineral oil transformer fluid The objectives of the present study were to update the mortality analysis and include deaths for the past 6 years as well as to do an analysis of cancer incidence of the cohort
  • Health Hazard Evaluation Report 82-208-1260 - Centers for Disease . . .
    transformer oil were spi l led around one of the transformers Several of the maintenance workers still employed at the plant at the time of the survey were involved in the cleanup In addition, one employee was involved in sampling oil periodically from the transformers over a period of some 25 years and in fi l tering oi l from
  • Concentrations and risks of polychlorinated biphenyls (PCBs) in . . .
    The estimated probabilistic cancer risk is by far greater than the acceptable risk of one chance in a million of equally exposed persons to suffer the risk of cancer or cancer-linked illness The dietary intakes of PCBs from drinking water sourced from the boreholes on the premises of the power plant ranged from 1 78-6 23 μg kg −1 bw d − 1
  • A case-control study of cancer mortality at a transformer . . . - Springer
    A case-control study of cancer mortality at a transformer-assembly facility Received: 13 September 1993 Accepted: 19 January 1994 A transformer oil used from 1936 to 1976, nominally composed of 50 % polychlorinated biphenyls (PC Bs) (a mixture of isomers but mostly hexachloro- cause of the exposure to benzene, TCE, and other solvents
  • (PDF) A case-control study of cancer mortality at a transformer . . .
    The results suggest that PCBs cause cancer, with malignant melanoma being of particular concern in this industry A transformer oil used from 1936 to 1976, nominally composed of 50% polychlorinated biphenyls (PC Bs) (a mixture of isomers but mostly hexachlorobiphenyl), 50% trichlorobenzene (or a mixture of tri and tetrachlorobenzene), less
  • Cancer mortality in workers employed at a transformer . . . - PubMed
    This study examined mortality to December 31, 1989 in a cohort of 2,222 males employed between 1947 and 1975 at a transformer manufacturing plant in Canada, where there had been extensive use of transformer fluid, some containing polychlorinated biphenyls (PCBs) A combined cohort list of 2,222 name …
  • PCB Hazards - Dominion Energy
    Polychlorinated biphenyls, or PCBs, are a probable carcinogen that may be found in transformer oil PCBs were widely used for cooling electric capacitors and transformers until the EPA banned them from most uses in 1979 A yellow warning label is required on certain equipment that contains PCBs at a concentration of at least 500 ppm
  • CWA Occupational Safety Health Fact Sheet #7
    • Rebuilding of PCB transformers involves draining the transformer, removing and disassembling the core, reworking the coil or rewinding a new coil, reassembling the core, and refilling the transformer with new fluid Rebuilding is necessary after a transformer has failed or after an inspection indicates that it will soon fail





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