Document kDBE2zVKjvJ3a2zVJjdvQabmE

London 14th January, 1966 Aroclor Toxicity - Coventry Corporation Water Induatry DVHH/AKW R.C. Blrrall 1 suggest that you summarise (l) the number of Aroclorinsulated transformers and oapaoltors that have been supplied (2) the kinds of organisation and of Industry that have taken them (j) the safety and other performance record. The chemical handbook citation oomes from "Dangerous Properties of Industrial Materials" by R. Irving Sax and neoessarlly gives overall guiding information for all conditions of usage. Some of the more aerlous effects would develop only after long-exposure and are common to chlorinated hydrooarbone whloh the dry-cleaning and degreasing liquids such as carbon tetrachloride and trichloroethylene are typical. When used in tranformers and capacitors the Aroclors are enclosed, except for suitable breathers, and there is no nuisance from fumes so that they oan be used indoors without endangering personnel. Leakage of Aroclor 1b unlikely to ooour to the extent of serious discharge, and would probably never be more than seepage in which case the manufacturer of the machine should be called upon to rectify it. If there is a risk of contaminating streams, wells or other water supplies, provision should be made by means of a suitable auap balow the transformer to oolleot any liquid that might be disoharged and this should be destroyed by mislng with oil and burning on waste ground. For any given application it is necessary to weigh up the advantages of an Aroolor-fllled transformer against the intrinsic difficulties of using the organic materials that confer the advantages but there is a considerable background of user experienoe to draw upon. d.v.k. HAiurr HONS 097929