[Milsurplus] PCB's, was Carborundum -R's

[J. Forster]

I just cautioned people.

My understanding is that Heath reccomended Nujol, which is sold OTC as a
laxative so must be pretty safe for human consumption.

Cradle to grave chemical tracking is a PITA.

-John

===========



> Re:
>> With that said, PCB oil has been one of the best transformer
>> oils ever made and my understanding is it has been difficult for the
>> industry to develop a substitute which worked equally well under
>> all conditions.
>> >
>> > The concern about PCBs and Askarel oil is pointless and
>> unsubstantiated BS.
>
> Reality is, PCB (Askeral) has one virtue, it will not support
> combustion.  Thus, it was used only in transformers installed in mines
> and buildings where fire was a serious hazard. (burning oil!)  Askarel
> use was never widespread because it was significantly more expensive
> than mineral oil.  This worry that every can of oil is a PCB is silly.
> Askarel also has a higher dielectric constant than mineral oil, and was
> used in some oil-paper capacitors to get more capacitance in the can,
> and apparently was cost effective.  I spent some years designing
> transformers, and Askarel use was never frivolous.  It was also too
> expensive to throw away.
>
>
> Askarels have been studied to death, and people who were up to their
> elbows in it for decades are healthier than people on the street.  Right
> or wrong, the environmentalists won.  I think it was mostly about
> punishing GE for being successful.
>
> Richard, AA1P
>
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