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[Amps] QRO questions

To: <amps@contesting.com>
Subject: [Amps] QRO questions
From: "Jim Thomson" <Jim.thom@telus.net>
Date: Sun, 7 Feb 2010 06:46:38 -0800
List-post: <amps@contesting.com">mailto:amps@contesting.com>

Typically we'd blow out about one of those every day of two.  The 
transports that moved through vacuum seals also used Teflon insulation.  
There was always a bunch of those stacked up waiting to be rebuilt. When 
we'd have an arc over at the base of a transformer there'd be a lot of 
black smoke and soot along with a smell similar to Chlorine and most 
likely part of the gas was Chlorine. The gas given off is very poisonous 
which we didn't find out until a bit later.  After they found out what 
it gives off when burnt, any arc usually resulted in all the operators 
deciding to take a break at the same time.

The gas isn't good for you, but unless in a closed space or you stick 
you nose in the smoke it's unlikely to cause any problems.



##  My understanding is... Teflon is  normally rated to run at 200 deg C
CCS.   It's max rated for 250 deg C.   It decomposes at 335 deg C. 

##  when Teflon turns into gas [dunno what temp it liquefies at]
the gas given off is called Phosgene gas.    This is extremely
dangerous !    It was used in WW-1.. along with mustard gas
and also Chlorine gas.   You don't want to be breathing it in
an enclosed, non ventilated area.

##  I didn't realize that Teflon  could generate gas...from
an arc? 

later......... Jim   VE7RF 

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