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Re Fire Extinguishers:<br>
<br>
Berkeley selected a Class ABC clean room compatible fire
extinguisher.<br>
The main issue with these units is the 'fill agent'.<br>
These were filled with halon in the past.<br>
However, due to its ozone depleting properties<br>
Halon 1211 (CF2ClBr) is no longer manufactured (as of 1994).<br>
The material is reclaimed and there are some stockpiles,<br>
however, it has become steadily more expensive.<br>
<br>
Halotron1 (CF3CHCl2) is a less ozone depleting compound<br>
developed as an alternative to halon 1211, but it is scheduled <br>
for production halt in 2015.<br>
<br>
The non-ozone depleting, non toxic, proven effective halon <br>
and halotron replacement is FE-36. It is not scheduled for phase <br>
out and as it becomes the standard its price has stabilized and
begun<br>
to come down. <br>
<br>
All these "clean agents" discharge as a liquid, have high visibility
during discharge, <br>
do not cause thermal or static shock, leave no residue and are
non-conducting. <br>
These properties make them ideal for computer rooms, clean rooms, <br>
telecommunications equipment, and electronics. But these superior
properties of <br>
halon, halotron and FE-36 come at a higher cost relative to carbon
dioxide<br>
- several hundred dollars each.<br>
<br>
Bill Flounders<br>
UC Berkeley<br>
<br>
<br>
Bulent KOROGLU wrote:
<blockquote cite="mid:4FA1A3FC.5060800@sabanciuniv.edu" type="cite">
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Dear All<br>
<br>
we are making a new nano technology center in Turkey,<br>
<br>
Our web site is not completed yet but if you are interested link
is below<br>
<br>
<a moz-do-not-send="true" href="http://sunum.sabanciuniv.edu"> http://sunum.sabanciuniv.edu</a><br>
<br>
I have a few questions<br>
<br>
1.) what kind of fire extinguisher are you using in your Cleanroom
(Gas,Water,Powder etc...) and which one is the best solution<br>
<br>
2.) How do you ensure the safety of hazardous gases
(silane,chlorine,Ammonium)<br>
<br>
3.) How do you ensure personal safety when working with hazardous
gases (fireman's suit and scuba mask)<br>
<br>
if i will not to bother you, i will ask to continue my questions
to use your experience<br>
<br>
Thank you very much for your help<br>
<br>
Sincerely...<br>
<br>
<br>
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<br>
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