[labnetwork] Toxic gases

[Carsen Kline]

Hi Manish,

Stanford is governed by the Santa Clara County Toxic Gas Ordinance, which exceeds or embellishes California building and fire code. (For reference: https://www.sccgov.org/sites/hazmat/programs/tgo/Pages/home.aspx) With automated gas cabinets and the required gas detection, we can keep our cylinders always open and available. The built-in engineering controls on the cabinets (normally closed valves, flame detectors for silane, pneumatic cylinder valves in many cases) both satisfy County code and let us sleep at night.

Best,
Carsen


Carsen Kline
Lab Operations Manager
Stanford Nanofabrication Facility
650-724-8214
snfexfab.stanford.edu
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From: labnetwork-bounces at mtl.mit.edu <labnetwork-bounces at mtl.mit.edu> on behalf of Manish Keswani <manish.keswani01 at gmail.com>
Sent: Friday, December 4, 2020 2:11 PM
To: labnetwork at mtl.mit.edu <labnetwork at mtl.mit.edu>
Subject: [labnetwork] Toxic gases


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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