About This Archive  | DCHAS-L 2021 Index   | DCHAS-L Yearly Index
person wearing a disposable face shield and surgical style mask

Check out Safety Emporium for your N95, N99, and face shield needs.

Previous by Date:
Subject: [DCHAS-L] Current status, challenges, and future directions of university laboratory safety in China
Date: Monday, December 6, 2021 at 7:53:55 AM
Author: CHAS membership <membership**At_Symbol_Here**DCHAS.ORG> 		Next by Date:
Subject: Re: [DCHAS-L] Hydrogen gas exhaust
Date: Mon, 6 Dec 2021 11:04:41 -0500
Author: Jeffrey Lewin

From: Margaret Rakas <mrakas**At_Symbol_Here**SMITH.EDU>
Subject: [DCHAS-L] Hydrogen gas exhaust
Date: Mon, 6 Dec 2021 10:42:00 -0500
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Message-ID: CAAszpkwrENFo+CXdZLdkRrkNbsw+5dCjKEHWAeV20e3q2oiQ4g**At_Symbol_Here**mail.gmail.com


Good (?) morning,

I am trying to determine the minimum exhaust for hydrogen gas (not liquified) and see that in NFPA 55, section 6.17.3.2 requires a minimum exhaust of 1 scf/min/ft2. I had to look up scf--it is 'standard cubic foot' and is defined as 1 cubic foot of natural gas at 60F and normal atmospheric pressure.

If I know the size of the room and air changes per hour, is it possible to calculate my exhaust without doing an experiment?

MANY thanks!
Margaret

--
Margaret A. Rakas, Ph.D.
Lab Safety & Compliance Director
Clark Science Center
413-585-3877 (p)

--- For more information about the DCHAS-L e-mail list, contact the Divisional membership chair at membership**At_Symbol_Here**dchas.org Follow us on Twitter **At_Symbol_Here**acsdchas

Previous post   |  Top of Page   |   Next post


The content of this page reflects the personal opinion(s) of the author(s) only, not the American Chemical Society, ILPI, Safety Emporium, or any other party. Use of any information on this page is at the reader's own risk. Unauthorized reproduction of these materials is prohibited. Send questions/comments about the archive to secretary@dchas.org.
The maintenance and hosting of the DCHAS-L archive is provided through the generous support of Safety Emporium.