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<p class="MsoNormal"><span style="color:#1F497D">Hi,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">When we do that kind of testing at Draper we use DI water vapor very clean and no chance of contamination. I purchased my system from a company called<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:9.0pt;font-family:"Arial",sans-serif">Applied Physics, Inc.</span></b><span style="font-family:"Helvetica",sans-serif">
<br>
</span><b><span style="font-size:9.0pt;font-family:"Arial",sans-serif">Bill To: PO Box 549, Niwot, CO 80544 USA</span></b><span style="font-family:"Helvetica",sans-serif">
<br>
</span><b><span style="font-size:9.0pt;font-family:"Arial",sans-serif">Ship To: 3800 Pike Road, Unit 16-204, Longmont, CO 80503 USA</span></b><span style="font-family:"Helvetica",sans-serif">
<br>
</span><b><span style="font-size:9.0pt;font-family:"Arial",sans-serif"><a href="http://www.appliedphysicsusa.com/">ww<span lang="FR">w.AppliedPhysicsUSA.com</span></a></span></b><span style="font-family:"Helvetica",sans-serif">
<br>
</span><b><span lang="DE" style="font-size:9.0pt;font-family:"Arial",sans-serif">Tel: 303-651-0395</span></b><span style="font-family:"Helvetica",sans-serif">
<br>
<br>
</span><span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">It is very effective and easy to use. Data sheet is attached<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Rick<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Richard Morrison<o:p></o:p></p>
<p class="MsoNormal">PMTS<o:p></o:p></p>
<p class="MsoNormal">Draper Laboratory<o:p></o:p></p>
<p class="MsoNormal">555 Technology Square<o:p></o:p></p>
<p class="MsoNormal">Cambridge Ma 02139<o:p></o:p></p>
<p class="MsoNormal">Office: 617-258-3420<o:p></o:p></p>
<p class="MsoNormal">Cell: 508-930-3461<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b>From:</b> labnetwork-bounces@mtl.mit.edu <labnetwork-bounces@mtl.mit.edu>
<b>On Behalf Of </b>Matthew Moneck<br>
<b>Sent:</b> Monday, March 8, 2021 5:16 PM<br>
<b>To:</b> labnetwork@mtl.mit.edu<br>
<b>Subject:</b> [labnetwork] VESDA Testing in Cleanrooms<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Hi All,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I was hoping this community might be able to provide some insights on testing of VESDA systems in cleanrooms. In particular, I am interested in how those of you with VESDA units handle the “smoke” test. It is my understanding that “smoke”
testing typically involves the spraying of an aerosol containing hydrocarbons, such as propane, butane, ethanol, etc. at the end of the detector piping or through a test port. If your test ports are located within the confines of the clean space, how do you
handle this aspect of the testing? Do you allow the use of these hydrocarbon based materials, or is there an acceptable alternative?
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">In our particular case, the VESDA units are mounted at the intake to our recirculating air handlers, so there is concern that any overspray not pulled into the VESDA piping would end up going into the recirc unit. Given the limited frequency
of the testing, the limited quantity of spray required, and the amount of air flow in the lab, perhaps we are overthinking this and dilution is the solution. Any feedback would be much appreciated.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Best Regards,<br>
<br>
Matt<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">--<o:p></o:p></p>
<p class="MsoNormal"><b>Matthew T. Moneck, Ph.D<o:p></o:p></b></p>
<p class="MsoNormal">Executive Manager, Claire & John Bertucci Nanotechnology Laboratory<o:p></o:p></p>
<p class="MsoNormal">Electrical & Computer Engineering | Carnegie Mellon University<o:p></o:p></p>
<p class="MsoNormal">5000 Forbes Avenue, Pittsburgh, PA 15213-3890<o:p></o:p></p>
<p class="MsoNormal">Phone: 412-268-5430<o:p></o:p></p>
<p class="MsoNormal"><a href="http://www.ece.cmu.edu">ece.cmu.edu</a> <o:p></o:p></p>
<p class="MsoNormal"><a href="http://www.nanofab.ece.cmu.edu">nanofab.ece.cmu.edu</a>
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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