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Fab Colleagues,<br>
<br>
I'll add, as a general policy about gas cylinder safety, given
modern gas cabinets, toxic gas monitoring systems and
orbitally-welded distribution the most likely time for a corrosive,
pyrophoric or toxic gas incident to occur is during a cylinder
change-out. <br>
<br>
My statement draws on presentations by Eugene Ngai who is often
described as the "silane guru". Retired chemical eningeer Eugene
Ngai has done an excellent job of documenting silane incidents and
safety practices. <br>
<br>
Arguing for smaller quantities of dangerous gases is in many cases
an argument for less safety.<br>
<br>
Bob Hamilton<br>
<br>
<pre class="moz-signature" cols="72">--
Robert Hamilton
University of California at Berkeley
Marvell NanoLab
Equipment Eng. Mgr.
Room 520 Sutardja Dai Hall
Berkeley, CA 94720-1754
<a class="moz-txt-link-abbreviated" href="mailto:bob@eecs.berkeley.edu">bob@eecs.berkeley.edu</a>
Phone: 510-809-8600
Mobile: 510-325-7557 (Emergencies only poor cell phone service in lab)e-mail preferred
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<br>
<div class="moz-cite-prefix">On 1/7/2015 9:04 AM, Dennis Schweiger
wrote:<br>
</div>
<blockquote
cite="mid:CAKzi2_NBMvS7SyyhGdVhwBs3vjpS4-znUJNpEGmtkRzvr78zLw@mail.gmail.com"
type="cite">
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<div dir="ltr">Matthie,
<div><br>
</div>
<div>good morning. Here at UofMichigan, we have two cylinders
on-line, both are about 40 cubic feet. We also have a single
spare cylinder in storage. Our current cadence for change-out
is about every 8 months. It can vary +/- 2 months with usage.</div>
<div class="gmail_extra"><br>
<div>
<div class="gmail_signature">
<div>Dennis Schweiger</div>
<div>University of Michigan/LNF</div>
<div> </div>
<div>734.647.2055 Ofc<br>
</div>
</div>
</div>
<br>
<div class="gmail_quote">On Tue, Jan 6, 2015 at 4:30 PM,
Matthieu Nannini, Dr. <span dir="ltr"><<a
moz-do-not-send="true"
href="mailto:matthieu.nannini@mcgill.ca" target="_blank">matthieu.nannini@mcgill.ca</a>></span>
wrote:<br>
<blockquote class="gmail_quote">Dear colleagues,<br>
<br>
first of all, happy new year to all of you ! May the force
be with you all !<br>
<br>
My EHS dept. would like to compare quantity of silane on
site in different labs. So, if you can spare 30s to answer
those 2 questions then you can go chasing the student that
left the evaporator at atmosphere during christmas:<br>
- how much silane do you use yearly ?<br>
- what is the cylinder volume you have ?<br>
<br>
cheers<br>
<br>
Matthieu<br>
McGill Nanotools<br>
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