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Hi Kostis,</div>
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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.</div>
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I don't know if it's mandated, but it makes a lot of sense for the many of the gasses we are using.</div>
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Kind regards</div>
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Mark.</div>
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Mark Chiappa</div>
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NTNU NanoLab</div>
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K1-111</div>
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Sem Sælansdsvei 14</div>
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7034 Trondheim</div>
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+47 91897617</div>
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<b>From: </b>labnetwork <labnetwork-bounces@mtl.mit.edu> on behalf of Michelakis, Kostis <kostis@slac.stanford.edu><br>
<b>Date: </b>Wednesday, 22 April 2026 at 01:43<br>
<b>To: </b>labnetwork@mtl.mit.edu <labnetwork@mtl.mit.edu><br>
<b>Subject: </b>[labnetwork] Automatic gas shutoff at the source<br>
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Dear Labnetwork colleagues,<br>
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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</div>
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<span style="font-family: Arial, sans-serif; font-size: 9pt; color: black;"><b>Kostis Michelakis, PhD</b></span></p>
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<span style="font-family: Arial, sans-serif; font-size: 9pt; color: black; line-height: 115%;">DMF Lab Manager</span></p>
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<span style="font-family: Arial, sans-serif; font-size: 9pt; color: rgb(70, 120, 134); line-height: 115%;"><u><a href="mailto:kostis@slac.stanford.edu" class="moz-txt-link-freetext" data-outlook-id="df54d314-0897-4899-909a-b74f02cfca3a" style="color: rgb(70, 120, 134); margin-top: 0px; margin-bottom: 0px;">kostis@slac.stanford.edu</a></u></span></p>
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<span style="font-family: Arial, sans-serif; font-size: 9pt; color: rgb(134, 17, 6); line-height: 115%;"><b>SLAC National Accelerator Laboratory </b></span></p>
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