From: "Wilhelm, Monique" <mwilhelm**At_Symbol_Here**UMFLINT.EDU>
Subject: [DCHAS-L] NMR Ventilation ?
Date: Sun, 9 Aug 2015 19:36:21 +0000
Reply-To: DCHAS-L <DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU>
Message-ID: 1109037139E1524980CF9CBEB247661883AD4657**At_Symbol_Here**

Hello Everyone,

I am looking for advice for installation for a new 400 MHz NMR. Our faculty and EHS people (from another campus) cannot seem to agree about the ventilation for cryogen safety. Does anyone have any ideas what best practices are for a 400 MHz? The EHS people are not agreeing with Bruker's recommendations.

Is emergency exhaust or a quench pipe more reasonable for a small space on a 400 MHz system? I am worried that having the quench pipe for the He would not be sufficient to protect against any N2 accumulations. Is there a "best practice" for a NMR in its own small space (approx. 1500 cu ft)?

I appreciate any advice that can be provided.

Thank you,
Monique Wilhelm
Laboratory Supervisor/Adjunct Lecturer/Chem Club Co-Advisor
Department of Chemistry & Biochemistry
University of Michigan-Flint
Flint, MI 48502

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