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Stop Silver Solder Running

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Pete49:
I use type of engineers chalk (thin stick) from Brownells I got years ago and never had a problem and easy to clean off. used when soldering (not soddering :Lol:) sights etc.
Pete

Steam Haulage:
Jo,
You have the circumstances and results correct but it was actually 1,1,1 trichloroethane  (CAS 71-55-6), (Genklene?) in the tank. The solvent was stabilised (composition was a trade secret) but the stabiliser vapour was more volatile and lighter than air so it tended to evaporate, leaving the 1,1,1-tri in the tank unstabilised. The cooling coils which prevented loss from the vapour degreasing tank had been turned off, and the inevitable result of all this was as you say.
At this distance in time I am not certain of the evolution of hexachlorobutene.
I have a copy of the tech service report somewhere but as it was an internal document it cannot be published.

Vapour degreasing tanks generally contain >100litres of solvent; correction fluid ~20 ml.

Jerry

Jo:
Jerry I don't remember the exact details it was over 20+ years ago. But the lid was left open and I suspect the power turned off to the workshop  :hellno:

I do recall when I worked for a company that made torpedoes we had our trike tank, which was used for degreasing the sections prior to assembly, in a separate building to everything else. They were really, really careful with it and access was very restricted!

 :noidea: I think it was Trike that we used for cleaning up the circuit boards as we assembled them. Great stuff, nothing afterwards did it as well :disappointed: I recall them getting worried about us inhaling the fumes, maybe they thought we might be enjoying ourselves too much  :Lol:.

Jo

Jim Nic:
Many, many years ago there was a case of an RAF technician who went back to work after everyone had quit for the day to clean some private motor parts in a work Trich bath.  Unfortunately he was overcome by the fumes, slumped head first over the bath and wasn't discovered till the following morning by which time he was severely brain damaged.  Trich was very hard to get in the RAF after that.  Perhaps it's no bad thing that it's still tricky to get.
I also seem to recall that Trich was used in fire extinguishers at one time but I may be wrong about that one.
Jim

Stuart:
That was CTC

Carbon Tetra Chloride  excuse the spelling also used in dry cleaning and a product called Dab it Off

Stuart

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