From:
Richard Palluzi <000006c59248530b-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU>
Subject:
Re: [DCHAS-L] Experience with Low Flow Fume Hoods
Date:
Sep 13, 2024 14:54 UTC
Reply-To:
ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU>
Message-ID:
<007a01db05ec$d9bd3c80$8d37b580$@verizon.net>
In-Reply-To:
<YQXPR01MB4264ACB17E2A171351D1B684F3642**At_Symbol_Here**YQXPR01MB4264.CANPRD01.PROD.OUTLOOK.COM>
Out in hose testing showed that they worked fine if effectively empty. As more equipment and “stuff” was put I the hood they started to fail and required a higher face velocity to ensure capture and containment. As we always had crowded hoods this was the rationale for not switching to low flow hoods despite a very large economic incentive.
The testing program involved dozens of hoods with different levels of equipment but was pretty consistent. We did not evaluate the effect of operations since the base case was an issue.
Richard Palluzi
BE(ChE), ME(ChE), PE, CSP,FAIChE
Pilot plant and laboratory consulting, safety, design, reviews, and training
www.linkedin.com/in/richardppalluzillc/
www.pilotplants.us
Richard P Palluzi LLC
72 Summit Drive
Basking Ridge, NJ 07920
rpalluzi**At_Symbol_Here**verizon.net
908-285-3782
From: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**Princeton.EDU> On Behalf Of Stephen Beaton
Sent: Thursday, September 12, 2024 3:45 PM
To: DCHAS-L**At_Symbol_Here**Princeton.EDU
Subject: [DCHAS-L] Experience with Low Flow Fume Hoods
Hello everyone,
I recall there was some discussion a couple of years ago regarding low-flow fume hoods, and I’d like to revisit the topic. Specifically, I am interested in hearing about your experiences using low-flow fume hoods sized with a maximum average face velocity of 60 FPM at an 18” sash opening in high-risk, highly variable academic research environments.
If you have insights or experiences—positive or negative—regarding their effectiveness, safety, or any challenges you’ve encountered, I would greatly appreciate your input.
Thank you in advance for your feedback!
Best regards,
Steve
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