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<p class="MsoNormal"><a name="x__MailAutoSig"><span style="font-size:11.0pt">Hi Kostis,<o:p></o:p></span></a></p>
<p class="MsoNormal"><span style="mso-bookmark:x__MailAutoSig"><span style="font-size:11.0pt"><o:p> </o:p></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:x__MailAutoSig"><span style="font-size:11.0pt">The answer will vary based on the statutory codes and AHJ of your location.<o:p></o:p></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:x__MailAutoSig"><span style="font-size:11.0pt"><o:p> </o:p></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:x__MailAutoSig"><span style="font-size:11.0pt">MIT.nano is equipped with a dedicated, stand-alone hazardous gas monitoring system that triggers automatic, fail-safe emergency shutoffs for associated gas equipment.
To satisfy the 'constantly attended control station' requirements in NFPA 55/72, and Massachusetts Fire Code, the gas detection system also communicates evacuation details to the building’s fire alarm system. If the building is in alarm from other fire alarm
initiation devices, it will send a “global gas off” to the hazardous gas monitoring system.<o:p></o:p></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:x__MailAutoSig"><span style="font-size:11.0pt"><o:p> </o:p></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:x__MailAutoSig"><span style="font-size:11.0pt">Happy to discuss more offline…but in short, if you have a very small system, leveraging the fire alarm maybe advantageous…If you have many points, a stand-alone system
you control is a huge advantage.<o:p></o:p></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:x__MailAutoSig"><span style="font-size:11.0pt"><o:p> </o:p></span></span></p>
<p class="MsoNormal"><span style="mso-bookmark:x__MailAutoSig"><span style="font-size:11.0pt">Best,<o:p></o:p></span></span></p>
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<p class="MsoNormal" style="background:white"><span style="mso-bookmark:x__MailAutoSig"><b><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">Nick Menounos, </span></b></span><span style="mso-bookmark:x__MailAutoSig"></span><span style="font-size:10.0pt;font-family:"Arial",sans-serif;color:black">PE</span><o:p></o:p></p>
<p class="MsoNormal" style="background:white"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black">MIT.nano - Associate Director of Infrastructure</span><o:p></o:p></p>
<p class="MsoNormal" style="background:white"><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black">Cell: </span><span style="color:black"><a href="tel:+15089320938"><span style="font-size:9.0pt;font-family:"Arial",sans-serif">(508) 932-0938</span></a></span><o:p></o:p></p>
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<p class="MsoNormal"><span style="font-family:"Calibri",sans-serif"> </span><span style="font-size:11.0pt"><o:p></o:p></span></p>
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<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 <labnetwork-bounces@mtl.mit.edu>
<b>On Behalf Of </b>Mark Chiappa<br>
<b>Sent:</b> Wednesday, April 22, 2026 2:40 AM<br>
<b>To:</b> Michelakis, Kostis <kostis@slac.stanford.edu>; labnetwork@mtl.mit.edu<br>
<b>Subject:</b> Re: [labnetwork] Automatic gas shutoff at the source<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black">Hi Kostis,<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="color:black">Here at NTNU NanoLab in Trondheim we use the fire alarm signal to shutoff all gases except N2 and CDA. We use ESO valves at the gas panel. We also have some bottles BCl3 for example where the ESO is part of the
bottle.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="color:black">I don't know if it's mandated, but it makes a lot of sense for the many of the gasses we are using.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="color:black">Kind regards<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black">Mark.<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="color:black">Mark Chiappa<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black">NTNU NanoLab<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black">K1-111<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black">Sem Sælansdsvei 14<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black">7034 Trondheim<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black">+47 91897617<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span style="color:black">From:
</span></b><span style="color:black">labnetwork <</span><a href="mailto:labnetwork-bounces@mtl.mit.edu">labnetwork-bounces@mtl.mit.edu</a><span style="color:black">> on behalf of Michelakis, Kostis <</span><a href="mailto:kostis@slac.stanford.edu">kostis@slac.stanford.edu</a><span style="color:black">><br>
<b>Date: </b>Wednesday, 22 April 2026 at 01:43<br>
<b>To: </b></span><a href="mailto:labnetwork@mtl.mit.edu">labnetwork@mtl.mit.edu</a><span style="color:black"> <</span><a href="mailto:labnetwork@mtl.mit.edu">labnetwork@mtl.mit.edu</a><span style="color:black">><br>
<b>Subject: </b>[labnetwork] Automatic gas shutoff at the source<o:p></o:p></span></p>
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<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>
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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>
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Thank you in advance for your consideration,<br>
Kostis<o:p></o:p></span></p>
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<p class="MsoNormal">--<br>
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<p class="wordsection1" style="margin:0in"><b><span style="font-size:9.0pt;font-family:"Arial",sans-serif;color:black">Kostis Michelakis, PhD</span></b><span style="font-family:"Times New Roman",serif"><o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:115%"><span style="font-size:9.0pt;line-height:115%;font-family:"Arial",sans-serif;color:black">DMF Lab Manager</span><span style="font-family:"Times New Roman",serif"><o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:115%"><a href="mailto:kostis@slac.stanford.edu"><span style="font-size:9.0pt;line-height:115%;font-family:"Arial",sans-serif;color:#467886">kostis@slac.stanford.edu</span></a><span style="font-family:"Times New Roman",serif"><o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:115%"><b><span style="font-size:9.0pt;line-height:115%;font-family:"Arial",sans-serif;color:#861106">SLAC National Accelerator Laboratory </span></b><span style="font-family:"Times New Roman",serif"><o:p></o:p></span></p>
<p class="MsoNormal" style="line-height:115%"><a href="http://slac.stanford.edu" title="slac.stanford.edu"><span style="font-size:9.0pt;line-height:115%;font-family:"Arial",sans-serif;color:#861106">slac.stanford.edu</span></a><span style="font-family:"Times New Roman",serif"><o:p></o:p></span></p>
<p class="MsoNormal" style="margin-bottom:8.0pt;line-height:115%"><span style="font-family:"Times New Roman",serif"> <o:p></o:p></span></p>
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