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From: "Brian T. Mars" <bmars**At_Symbol_Here**CARLETON.EDU>
Subject: Re: [DCHAS-L] Liquid nitrogen storage
Date: March 8, 2013 11:10:38 AM EST
Reply-To: DCHAS-L <DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU>
Message-ID: <5564F9EDC11C09468EE5DAF02B5CB30F29529073**At_Symbol_Here**BY2PRD0410MB376.namprd04.prod.outlook.com>

A lot depends on how many containers in what size room.

-Brian

----- Original Message -----
From: "Ralph B Stuart"
To: DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU
Sent: Friday, March 8, 2013 9:40:28 AM
Subject: [DCHAS-L] Liquid nitrogen storage

Does anyone have a rule of thumb for a ventilation rate in a room which is being used to store liquid nitrogen containers? Several credible web sources recommend a "well-ventilated area" without mentioning numbers. We have a room under consideration for this purpose with about 1 air change per hour. This seems low to me, but I thought I would sanity check it with DCHAS-L.

Thanks for any help with this.

- Ralph

Ralph Stuart CIH
Chemical Hygiene Officer
Department of Environmental Health and Safety
Cornell University

rstuart**At_Symbol_Here**cornell.edu

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