[labnetwork] Automatic gas shutoff at the source

[Dennis Schweiger]

Kostis,

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.

Our fire detection system has no control over any of our HPM gases.  It's
strictly used for fire cause/effect.

Thanks,

Dennis Schweiger
University of Michigan/LNF
Facilities

734.647.2055 Ofc


On Tue, Apr 21, 2026 at 7:58 PM Michelakis, Kostis <kostis at slac.stanford.edu>
wrote:

> Dear Labnetwork colleagues,
>
> 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.
>
> 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.
>
> Thank you in advance for your consideration,
> Kostis
> --
>
> *Kostis Michelakis, PhD*
>
> DMF Lab Manager
>
> kostis at slac.stanford.edu
>
> *SLAC National Accelerator Laboratory *
>
> slac.stanford.edu
>
>
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