[labnetwork] Toxic gases- Great conclusion by Manish

[Srinivasa Reddy]

Dear Manish,

Your table making and summing  is nice and easy to understand

Thanks & Regards
Srinivasa Reddy Kuppireddi
Project Manager
Center for NEMS & Nano Photonics (CNNP)
ESB 225, Dept. of Electrical Engineering
Indian Institute of Technology(IIT) Madras
Chennai-600036, Indian
+91 44 2257 5493 (O)
+91 789 326 8010(M)


On Mon, Dec 7, 2020 at 2:13 AM Manish Keswani <manish.keswani01 at gmail.com>
wrote:

> 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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