Hi Syam:

An additional approach is to reduce exhaust down to lower but still safe levels. Flow Sciences has developed a CONSTASNT VOLUME hood that can save 62% of exhaust which was formerly used at 100 FPM. See links below. This hood works even more economically with VAV.

https://www.youtube.com/watch?v=jWfCIakvAik

https://www.youtube.com/watch?v=SAkeRDNYoTA

Very Truly Yours,

Dr. Bob Haugen
Director of Product and Technology Development
Flow Sciences Inc.
2025 Mercantile Drive
Leland, NC 28451

Phone 910 332 4878

-----Original Message-----
From: DCHAS-L Discussion List [mailto:dchas-l**At_Symbol_Here**med.cornell.edu] On Behalf Of Debbie M. Decker
Sent: Monday, July 06, 2015 1:49 PM
To: DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU
Subject: Re: [DCHAS-L] number of fume hoods per researcher

Hi Syam:

In chemical synthetic research, our default is an 8 foot fume hood that two researchers would share. In organic teaching laboratories, those are 6 foot fume hoods and two students share. They use micro-scale reactions, for the most part, so it's a bit easier to have two students share.

There isn't a requirement, necessarily, for fume hood space. California Fire Code requires 50 sq ft of (floor) space per student in higher ed teaching laboratories. To my knowledge, there isn't a similar requirement for research labs.

Hope this helps,
Debbie

Debbie M. Decker, CCHO, ACS Fellow
Chair, Division of Chemical Health and Safety University of California, Davis
(530)754-7964
(530)304-6728
dmdecker**At_Symbol_Here**ucdavis.edu

Birkett's hypothesis: "Any chemical reaction that proceeds smoothly under normal conditions, can proceed violently in the presence of an idiot."

-----Original Message-----
From: DCHAS-L Discussion List [mailto:dchas-l**At_Symbol_Here**MED.CORNELL.EDU] On Behalf Of Syam Kumar Prabhakaran
Sent: Wednesday, July 01, 2015 6:47 PM
To: DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU
Subject: Re: [DCHAS-L] DCHAS-L Digest - 29 Jun 2015 to 30 Jun 2015 (#2015-131)

Dear All,

We are looking for a design requirement for number of fume hood per researcher in chemistry labs. Is sharing of hoods a good idea? In safety point of view, we should provide adequate space for researchers to work but the energy cost will increase based on the number of hoods in lab. Please share if you have or aware of some requirements or good practices on the allocation of hood space in Chemistry labs.

Thanks in advance

Syam Kumar Prabhakaran (Mr) :: Associate Director, Dean's Office, Faculty of Science :: National University of Singapore

use it for any purpose, nor disclose its contents to any other person. Thank you.

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