[labnetwork] Toxic gases

[Manish Keswani]

Thank you so much everyone for such an enthusiastic response.  It seems
clear that at most facilities (if not all), the gas cylinders are always
kept open. We also have TGMS in our cleanroom which allows monitoring of
the toxic gases at multiple locations (source and delivery point) and will
shut off the ESO valve in the event of a leak.

We will work with our safety and ES&H teams to change our current practice
of turning off the gases when not in use.



Regards,

Manish


[image: image.png]


On Fri, Dec 4, 2020 at 2:11 PM Manish Keswani <manish.keswani01 at gmail.com>
wrote:

> Happy Friday everyone,
>
>
> I have a question related to toxic gases in our nano fabrication center.
>
>
>
> We typically shut off our toxic gases at the source when not in use, using
> the in line valves on the Safety Manifolds, the ESO valves, and the
> cylinder valve. This is to comply with the administrative control stated in
> our gas safety notes. The following question came up for toxic gases. I
> would like to understand how this is being done at other facilities and the
> reasoning behind it.
>
>
>
> “Is there a good reason we turn off the toxic gases at the end of the day
> instead of just leaving them on? It seems like if there is a risk, it would
> be wear and tear on the valves etc, plus someone going in vault often to do
> it.”
>
>
>
>
>
> Thanks in advance,
>
> Manish Keswani
>
> Lawrence Livermore National Laboratory
>
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