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Jeff,
Poly-Chlorinated-Byphenols have been out of circulation for about 20 =
or so years. Any chlorinated solvent tends to lend itself to being =
harmful. However, one of the members in our radio club, worked where =
they assembles large sub-station type transformers for industrial use. =
He said that they used to go "up to their armpits" with the PCB's. He =
doesn't know of any of his fellow workers that have had any =
complications due to exposure. Where the real problem exists is when its =
been "cooked" and the actual composition of the material has changed. =
What suprises me is that I haven't seen any of the newer dielectric =
substitutes being used in large HV caps today. Where I work, we have an =
ozone generator that uses a high grade type of silicone oil as the =
insulating dielectric we creating ozone for disinfecting. Maybe there =
are but its mostly confined to industrial application.
Thats my nickel's worth of information.
Mike(y)
W3SLK
----- Original Message -----=20
From: Jeff Dixon=20
To: amps@contesting.com=20
Sent: Wednesday, June 21, 2000 4:42 PM
Subject: [AMPS] Tubes in Oil
Dear all=20
Do please excuse me if I missed something earlier in the discussion =
but thought a timely warning might be in order.
The cooling oil that used to be used in amps , transformers etc was =
found to be carcinogenic (Cancer forming) and not nice either to handle =
or to have around the home.
If I remember correctly it is harmful both by contact and by =
inhalation of the fumes.
It has been banned in the UK for about fifteen years or so but every =
so often a batch of older units comes to life still bathing in the =
stuff.
There was an article about the problem in Radcom (UK Journal of the =
RSGB) a few years ago and I will try to unearth the details if anyone is =
interested.
73 fer now
DE
M5AIO
Jeff
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<DIV><FONT size=3D3>Jeff,</FONT></DIV>
<DIV> Poly-Chlorinated-Byphenols have been out of =
circulation=20
for about 20 or so years. Any chlorinated solvent tends to lend itself =
to being=20
harmful. However, one of the members in our radio club, worked where =
they=20
assembles large sub-station type transformers for industrial use. He =
said that=20
they used to go "up to their armpits" with the PCB's. He doesn't know of =
any of=20
his fellow workers that have had any complications due to exposure. =
Where the=20
real problem exists is when its been "cooked" and the actual composition =
of the=20
material has changed. What suprises me is that I haven't seen any of the =
newer=20
dielectric substitutes being used in large HV caps today. Where I work, =
we have=20
an ozone generator that uses a high grade type of silicone oil as the =
insulating=20
dielectric we creating ozone for disinfecting. Maybe there are but its =
mostly=20
confined to industrial application.</DIV>
<DIV> Thats my nickel's worth of information.</DIV>
<DIV>Mike(y)<BR>W3SLK</DIV>
<BLOCKQUOTE=20
style=3D"BORDER-LEFT: #000000 2px solid; MARGIN-LEFT: 5px; MARGIN-RIGHT: =
0px; PADDING-LEFT: 5px; PADDING-RIGHT: 0px">
<DIV style=3D"FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV=20
style=3D"BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: =
black"><B>From:</B>=20
<A href=3D"mailto:jeffdixon@freenetname.co.uk"=20
title=3Djeffdixon@freenetname.co.uk>Jeff Dixon</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>To:</B> <A =
href=3D"mailto:amps@contesting.com"=20
title=3Damps@contesting.com>amps@contesting.com</A> </DIV>
<DIV style=3D"FONT: 10pt arial"><B>Sent:</B> Wednesday, June 21, 2000 =
4:42=20
PM</DIV>
<DIV style=3D"FONT: 10pt arial"><B>Subject:</B> [AMPS] Tubes in =
Oil</DIV>
<DIV><BR></DIV>
<DIV><FONT face=3DArial size=3D2>Dear all </FONT></DIV>
<DIV><FONT face=3DArial size=3D2>Do please excuse me if I missed =
something earlier=20
in the discussion but thought a timely warning might be in =
order.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>The cooling oil that used to be used =
in amps ,=20
transformers etc was found to be carcinogenic (Cancer forming) and not =
nice=20
either to handle or to have around the home.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>If I remember correctly it is harmful =
both by=20
contact and by inhalation of the fumes.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>It has been banned in the UK for =
about fifteen=20
years or so but every so often a batch of older units comes to life =
still=20
bathing in the stuff.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>There was an article about the =
problem in Radcom=20
(UK Journal of the RSGB) a few years ago and I will try to unearth the =
details=20
if anyone is interested.</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>73 fer now</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>DE</FONT></DIV>
<DIV><FONT face=3DArial size=3D2>M5AIO</FONT></DIV>
<DIV><FONT face=3DArial =
size=3D2>Jeff</FONT></DIV></BLOCKQUOTE></BODY></HTML>
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