From: Kyle Angjelo <kangjelo**At_Symbol_Here**GMAIL.COM>
Subject: Re: [DCHAS-L] Standard Chemical Fume Hood Face Velocities
Date: Mon, 18 Apr 2016 20:16:45 -0400
Reply-To: DCHAS-L <DCHAS-L**At_Symbol_Here**MED.CORNELL.EDU>
Message-ID: CA+shBzboXyuaWPFJ=D0iP4vtTVkVAHT1=BU8rp2+wdJHcFAE3w**At_Symbol_Here**

Hey Brandon,
As long as it passes the ASHRAE 110 in place and we verify that the fume hood is at the face velocity it passed when the ASHRAE 110 was performed, we're consider it acceptable; ASHRAE is really a test methodology (not a performance criteria). As you know, we have fume hoods operating from 60fpm all the way to 110fpm average face velocity (and some, probably). There is an ANZI/ AIHA Z9.5 guidance, there's also SEFA 1.2 1996 which is a recommended practice that superceded SAMA LF 10 1981. As you already know, Joan is the guru to ask from the Princeton EHS office though. Just thought I'd throw some abbreviations out there that you could look up.


On Mon, Apr 18, 2016 at 5:32 PM, Chance, Brandon <bchance**At_Symbol_Here**> wrote:

By a quick show of hands, what face velocity do all of you consider as an acceptable velocity for certifying standard chemical fume hoods in academic and research labs? OSHA is pretty vague on the issue (must provide adequate ventilation [1910.1450(e)(3)(iii)]). Appendix A (non-mandatory) references Prudent Practices, where 80-100 is standard, up to 120 is okay for high hazard (no containment benefit proven) and 60fpm may be okay for low flow, specially designed hoods.

Before getting into too much detail, I am curious as to what all of you are considering as passing at 18in sash height, and what you are considering as failing.


Brandon S. Chance, M.S., CCHO
Associate Director of Environmental Health and Safety
Office of Risk Management
Southern Methodist University
PO Box 750231 | Dallas, TX 75275-0231

"=E2=80=A6 our job in safety is to make the task happen, SAFELY; not to interfere with the work-" Neal Langerman

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