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--></style></head><body lang="EN-US" link="blue" vlink="purple" style="word-wrap:break-word"><div class="WordSection1"><p class="MsoNormal"><span style="font-size:11.0pt">Our gas monitoring system has an output to the fire panel in the event we have a major hazardous gas leak. It also has an input from the fire panel to shut off all hazardous gases in the event of a fire alarm.</span></p><p class="MsoNormal"><span style="font-size:11.0pt">I believe all of the requirements are in the fire code.</span></p><p class="MsoNormal"><span style="font-size:11.0pt"> </span></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt"> </span></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:18.0pt;font-family:"Ink Free"">Peder Lenvik</span></b></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Eras Medium ITC",sans-serif"> </span></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Eras Medium ITC",sans-serif">Sr. Facilities Lead</span></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Eras Medium ITC",sans-serif"> </span></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Eras Medium ITC",sans-serif">Electrical and Computer Engineering</span></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Eras Medium ITC",sans-serif">E.S.B. Bldg. #225, Room 1109C</span></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Eras Medium ITC",sans-serif">University California Santa Barbara, Santa Barbara, Ca. 93106</span></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Eras Medium ITC",sans-serif"> </span></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Eras Medium ITC",sans-serif">Cell: (805)698-7461</span></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Eras Medium ITC",sans-serif"> </span></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Eras Medium ITC",sans-serif"><a href="mailto:plenvik@ucsb.edu" target="_blank">plenvik@ucsb.edu</a></span></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Eras Medium ITC",sans-serif"> </span></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-family:"Eras Medium ITC",sans-serif"><a href="http://www.nanotech.ucsb.edu/" target="_blank">http://www.nanotech.ucsb.edu</a></span></p><p class="MsoNormal"><span style="font-size:11.0pt"> </span></p><div style="border:none;border-top:solid #e1e1e1 1.0pt;padding:3.0pt 0in 0in 0in"><p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">From:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> labnetwork <<a href="mailto:labnetwork-bounces@mtl.mit.edu">labnetwork-bounces@mtl.mit.edu</a>> <b>On Behalf Of </b>Dennis Schweiger<br><b>Sent:</b> Wednesday, April 22, 2026 8:25 AM<br><b>To:</b> Michelakis, Kostis <<a href="mailto:kostis@slac.stanford.edu">kostis@slac.stanford.edu</a>><br><b>Cc:</b> <a href="mailto:labnetwork@mtl.mit.edu">labnetwork@mtl.mit.edu</a><br><b>Subject:</b> Re: [labnetwork] Automatic gas shutoff at the source</span></p></div><p class="MsoNormal"> </p><div><div><div><p class="MsoNormal"><span style="font-family:"Arial",sans-serif">Kostis,</span></p></div><div><p class="MsoNormal"><span style="font-family:"Arial",sans-serif"> </span></p></div><div><p class="MsoNormal"><span style="font-family:"Arial",sans-serif">good morning. Here at the UofMichigan/LNF all of our gas detection (LSS) is separate from the fire annunciation system . We're monitoring about 165 points across the fab. Many years ago we used the fire system for gas detection, but it was problematic whenever we wanted to work on anything gas detection related, we had to loop in our fire shop to disable the input points. With two separate systems, we can now do whatever service work we need on our LSS, with out impacting the building fire system. Both system will send a notification to the other when they trigger, so we do have that cross functionality.</span></p></div><div><p class="MsoNormal"><span style="font-family:"Arial",sans-serif"> </span></p></div><div><p class="MsoNormal"><span style="font-family:"Arial",sans-serif">Our fire detection system has no control over any of our HPM gases. It's strictly used for fire cause/effect. </span></p></div><div><p class="MsoNormal"><span style="font-family:"Arial",sans-serif"> </span></p></div><div><p class="MsoNormal"><span style="font-family:"Arial",sans-serif">Thanks,</span></p></div><p class="MsoNormal"><br clear="all"></p></div><div><div><div><p class="MsoNormal">Dennis<span class="gmaildefault"><span style="font-family:"Arial",sans-serif"> Schweiger</span></span></p></div><div><p class="MsoNormal"><span class="gmaildefault"><span style="font-family:"Arial",sans-serif">University of Michigan/LNF</span></span></p></div><div><p class="MsoNormal"><span class="gmaildefault"><span style="font-family:"Arial",sans-serif">Facilities</span></span></p></div><div><p class="MsoNormal"> </p></div><div><p class="MsoNormal">734.647.2055 Ofc</p></div></div></div><p class="MsoNormal"> </p></div><p class="MsoNormal"> </p><div><div><p class="MsoNormal">On Tue, Apr 21, 2026 at 7:58<span style="font-family:"Arial",sans-serif"> </span>PM Michelakis, Kostis <<a href="mailto:kostis@slac.stanford.edu">kostis@slac.stanford.edu</a>> wrote:</p></div><blockquote style="border:none;border-left:solid #cccccc 1.0pt;padding:0in 0in 0in 6.0pt;margin-left:4.8pt;margin-right:0in"><div><p class="MsoNormal"><span style="font-size:13.5pt;font-family:"Times New Roman",serif">Dear Labnetwork colleagues,<br><br>We are reviewing our emergency procedures and I would like to ask, specifically for your hazardous and toxic gases, in the case of a fire alarm being triggered, if you make use of the building's Fire Alarm Control Panel (FACP) respective signal to automatically shutoff gases at the source.<br><br>We have at our disposal a range of engineering controls to shutoff gases at the source, but I am specifically interested to learn if the method of using directly the fire alarm signal has been mandated or otherwise chosen in your setting.<br><br>Thank you in advance for your consideration,<br>Kostis</span></p><div><p class="MsoNormal">-- </p><div><p style="margin:0in"><b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black">Kostis Michelakis, PhD</span></b></p><p class="MsoNormal" style="mso-margin-top-alt:auto"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black">DMF Lab Manager</span></p><p class="MsoNormal" style="mso-margin-top-alt:auto"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black"><a href="mailto:kostis@slac.stanford.edu" target="_blank">kostis@slac.stanford.edu</a></span></p><p class="MsoNormal" style="mso-margin-top-alt:auto"><b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#861106">SLAC National Accelerator Laboratory </span></b></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:#861106"><a href="http://slac.stanford.edu" target="_blank" title="slac.stanford.edu"><span style="color:#861106">slac.stanford.edu</span></a></span></p><p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> </p></div></div></div><p class="MsoNormal">_______________________________________________<br>labnetwork mailing list<br><a href="mailto:labnetwork@mtl.mit.edu" target="_blank">labnetwork@mtl.mit.edu</a><br><a href="https://mtl.mit.edu/mailman/listinfo.cgi/labnetwork" target="_blank">https://mtl.mit.edu/mailman/listinfo.cgi/labnetwork</a></p></blockquote></div></div></body></html>