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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>Cleanrooms are indeed notorious for too much dilution of smoke to detect it. That is why VESDA and similar systems need MULTIPLE points of detection that are in the air path. A model of air flow in the cleanroom would help to determine the best places to locate the very sensitive smoke detectors needed (eg, VESDA or similar). Probably in your case the air with the small amount of smoke did not pass close enough to the sensors, or they were not sensitive enough, or both. You likely would have needed quite a few more sensors to detect it, as well. We would have to know more about your air handlers and the exact room layout and where the fire was actually located that went un- detected. What caused someone to finally notice the fire or smoke?<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>Abbie Gregg</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>President</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>Abbie Gregg, Inc.</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>1130 East University Drive, Suite 105</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>Tempe, Arizona 85281</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>Phone 480 446-8000 x 107</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>Cell 480-577-5083</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>FAX 480-446-8001</span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>email <a href="mailto:agregg@abbiegregg.com" title="mailto:agregg@abbiegregg.com">agregg@abbiegregg.com</a></span><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'>website <a href="http://www.abbiegregg.com" title="http://www.abbiegregg.com/">www.abbiegregg.com</a></span><span style='color:#1F497D'><o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:red'><o:p> </o:p></span></p><p class=MsoNormal><i><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:navy'>CONFIDENTIALITY NOTICE: All information contained in or attached to this email constitutes confidential information belonging to Abbie Gregg, Inc., its affiliates and subsidiaries and/or its clients. This email and any attachments are proprietary and/or confidential and are intended for business use of the addressee(s) only. All other uses or disclosures are strictly prohibited. If the reader is not the intended recipient you are hereby notified that the perusal, copying or dissemination of this email is strictly prohibited. If you have received this communication in error, please notify the sender, and delete all copies of this message and its attachments immediately</span></i><span style='font-size:9.0pt;font-family:"Arial","sans-serif";color:navy'>. <o:p></o:p></span></p></div><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Arial","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> labnetwork-bounces@mtl.mit.edu [mailto:labnetwork-bounces@mtl.mit.edu] <b>On Behalf Of </b>julia.aebersold@louisville.edu<br><b>Sent:</b> Monday, March 30, 2015 5:15 PM<br><b>To:</b> Labnetwork<br><b>Subject:</b> Re: [labnetwork] Smoke detectors in the clean room<o:p></o:p></span></p></div></div><p class=MsoNormal><o:p> </o:p></p><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'>I bet Abbie Gregg has a good response for the code standards here in the US.<o:p></o:p></span></p><div><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'><o:p> </o:p></span></p><div><div><div><div><div><p><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'>Cheers!<o:p></o:p></span></p><p><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'><o:p> </o:p></span></p><p><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'>Julia Aebersold, Ph.D.<o:p></o:p></span></p><p><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'>MNTC Cleanroom Manager<o:p></o:p></span></p><p><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'>University of Louisville<o:p></o:p></span></p><p><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'>2210 South Brook Street<o:p></o:p></span></p><p><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'>Shumaker Research Building, Room 233<o:p></o:p></span></p><p><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'>Louisville, KY 40292<o:p></o:p></span></p><p><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'> <o:p></o:p></span></p><p><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'>(502) 852-1572<o:p></o:p></span></p><p><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'><a href="http://louisville.edu/micronano">http://louisville.edu/micronano/</a><o:p></o:p></span></p><p><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'><o:p> </o:p></span></p></div></div></div></div></div></div><div><div class=MsoNormal align=center style='text-align:center'><span style='color:black'><hr size=3 width="100%" align=center></span></div><div id=divRpF157916><p class=MsoNormal style='margin-bottom:12.0pt'><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black'> <a href="mailto:labnetwork-bounces@mtl.mit.edu">labnetwork-bounces@mtl.mit.edu</a> [labnetwork-bounces@mtl.mit.edu] on behalf of Mike Young [myoung6@nd.edu]<br><b>Sent:</b> Monday, March 30, 2015 9:26 AM<br><b>To:</b> Labnetwork<br><b>Subject:</b> Re: [labnetwork] Smoke detectors in the clean room</span><span style='color:black'><o:p></o:p></span></p></div><div><p class=MsoNormal><span style='color:black'>Unless I am missing something, in most jurisdictions, this is determined entirely by the applicable building and/or fire code(s). Cleanroom management generally have no say in the matter. <o:p></o:p></span></p><div><p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='color:black'>--Mike<o:p></o:p></span></p></div><div><p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p></div><div><p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p><div><blockquote style='margin-top:5.0pt;margin-bottom:5.0pt'><div><p class=MsoNormal><span style='color:black'>On Mar 30, 2015, at 5:49 AM, savitha.p <<a href="mailto:savitha.p@ece.iisc.ernet.in" target="_blank">savitha.p@ece.iisc.ernet.in</a>> wrote:<o:p></o:p></span></p></div><p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p><div><p class=MsoNormal><span style='color:black'>Hi!<br><br>We had a fire recently inside the cleanroom and our smoke detectors did not give any warning even though the fire was burning for ~5min before it was put out. We currently have smoke detectors, a VESDA system installed inside the room with 3 detectors, one at the plenum level, one in the room and one under the raised floor (room is square shaped with ~700 sq.ft area, Class 1000).<br><br>We were wondering how the other fabs handle these kind of situations. What is the ideal distance between smoke detectors and how do you ensure that the smoke is driven over the detectors no matter what the location of the fire is.<br><br>Please let us know your thoughts on this matter.<br><br>Thanks and regards,<br><br>Savitha<br><br>____________________________________________<br><br><br>Dr.Savitha P,<br>Technology Manager<br>National Nanofabrication Centre,<br>Centre for Nanoscience and Engineering<br>Indian Institute of Science<br>Bangalore - 560012<br>India.<br>Ph: +91 80 2293 3254<br><a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__www.cense.iisc.ernet.in&d=AwMFAg&c=SgMrq23dbjbGX6e0ZsSHgEZX6A4IAf1SO3AJ2bNrHlk&r=dinfzkbAbqkWVX3xF1fcv2PCcim1G4Oe9iPy5r31AUk&m=LpxOLrGO9DAe1YJKbHwKHhziLsKXYJED12kHOGCTx6w&s=jJmlNLnTqz5MGeQo4GouJr5r6l0qg4dh382z9PfcnEk&e=" target="_blank"><b><span style='color:red'>The MTL Mail Server has detected a possible fraud attempt from "urldefense.proofpoint.com" claiming to be</span></b> www.cense.iisc.ernet.in</a><br><br><br><br>_______________________________________________<br>labnetwork mailing list<br><a href="mailto:labnetwork@mtl.mit.edu">labnetwork@mtl.mit.edu</a><br><a href="https://www-mtl.mit.edu/mailman/listinfo.cgi/labnetwork">https://www-mtl.mit.edu/mailman/listinfo.cgi/labnetwork</a><o:p></o:p></span></p></div></blockquote></div><p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p><div><div><p class=MsoNormal><span style='color:black'>-- <br></span><span style='font-size:8.5pt;font-family:Consolas;color:black'>Michael P. Young (574) 631-3268 (office)<br>Nanofabrication Specialist (574) 631-4393 (fax)<br>Department of Electrical Engineering (765) 637-6302 (cell)<br>University of Notre Dame <a href="mailto:mike.young@nd.edu" target="_blank">mike.young@nd.edu</a><br>B-38 Stinson-Remick Hall<br>Notre Dame, IN 46556-5637</span><span style='color:black'><o:p></o:p></span></p></div></div><p class=MsoNormal><span style='color:black'><o:p> </o:p></span></p></div></div></div></div></div></body></html>