[dsg-hallb_rich] Cannot use nitrogen in aerogel tents if people will work inside tents

[Tyler Lemon]

Hello again,

I talked to Marc and he reminded me that we cannot use nitrogen in the aerogel tents.

The tents were approved for use with dry air purge only.

-Tyler
________________________________
From: dsg-hallb_rich <dsg-hallb_rich-bounces at jlab.org> on behalf of Tyler Lemon <tlemon at jlab.org>
Sent: Tuesday, May 17, 2022 10:17 AM
To: dsg-hallb_rich at jlab.org <dsg-hallb_rich at jlab.org>
Subject: [dsg-hallb_rich] Cannot use nitrogen in aerogel tents if people will work inside tents

Hi Marco M, Marco C, Sandro, and Dario,

I noticed today that there's now a nitrogen supply line running from the manifold near the window of the cleanroom back to the corner where the aerogel tents are.

I do see that that line is not connected to the manifold, but if people will be working inside the tents, nitrogen cannot be used to purge the tents as it creates an Oxygen Deficiency Hazard (ODH) situation inside the tent.

If it needs to be more dry inside the tents, we will have to come up with a safer way to proceed.

-Tyler


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