[labnetwork] Toxic Gases tubing

[Collins, Deon Douglas]

Semi has standards that you can and should refer to for these matters. This will give you a good baseline. After that you should look at your local codes to make sure they don’t take it to a higher level.

For me any toxic gas outside of a gas cabinet should be ran in coaxial tubing.

Deon D. Collins

FACILITY MANAGER
Holonyak Lab
University of Illinois at Urbana-Champaign
208 N Wright St Rm. 248 | 2250
Urbana, IL 61801
217-300-7531 | deonc69 at illinois.edu<mailto:deonc69 at illinois.edu>


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From: labnetwork-bounces at mtl.mit.edu <labnetwork-bounces at mtl.mit.edu> On Behalf Of Kamal Yadav
Sent: Monday, September 14, 2020 11:43 AM
To: labnetwork at mtl.mit.edu
Subject: [labnetwork] Toxic Gases tubing

Dear All,

We will be installing SS gas tubing for Cl2, BCl3, HBr, SiH4.

I have some experience in how industry does it, but wanted to know how different universities do this. From some prior posts, I got to know University of Michigan has co-axial tubing for all these gases and every connector location for these gases is exhausted as well at their facility

My queries are:
1. Is this how most of the Universities do it or there are places where these gases are in single tubing [non co-axial or double contained].
2. Also if you do orbital welding or just bending of the tubes?

I have been informed it is based on the fire code of the city or county, but it's not apparent from those documents.

Thanks for your help.

--
Thanks,
Kamal

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