DCHAS-L Discussion List Archive
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Subject: Re: [DCHAS-L] Fume Hood Regs
Date: Wednesday, August 23, 2017 at 11:59:06 PM
Author: James Saccardo <James.Saccardo**At_Symbol_Here**CSI.CUNY.EDU>
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Subject: Re: [DCHAS-L] Fume Hood Regs
Date: Thu, 24 Aug 2017 08:39:37 -0400
Author: Ken Kretchman
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From: Monona Rossol <0000030664c37427-dmarc-request**At_Symbol_Here**LISTS.PRINCETON.EDU>
Subject: Re: [DCHAS-L] Fume Hood Regs
Date: Thu, 24 Aug 2017 08:07:32 -0400
Reply-To: ACS Division of Chemical Health and Safety <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
Message-ID: 15e1423ebf7-46e1-9530**At_Symbol_Here**webjas-vab059.srv.aolmail.net
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Thanks Harry, I knew someone would get this. OSHA doesn't require any specific ventilation equipment. OSHA requires 1) a chemical exposure risk assessment after which the employer must provide 2) whatever works to keep exposure below any action level or PEL. And since the PPE rules require engineering controls when "feasible" rather than respirators, that leaves the obvious conclusion that ventilation is needed.
For chemists, the best solution is the fume hood. In art where work in the open is needed, usually some other local exhaust system such as a spray booth, slot hood, flex duct, etc.
In the case of labs, this is complicated by the vast numbers of different chemicals that might be used. No one would want to have people work with each of these chemicals in the open so they could do a personal monitoring to assess the risk for each. So the assumption is made that snorting solvents is probably not a good thing and using all the nasty stuff in a hood saves time and money because no personal monitoring risk assessment is usually needed.
I really think the desire to see a written requirement for fume hoods is generated by the inability of many of our administrators to follow this logical reasoning. Most seem to need (or demand) short, simple rules under the heading: "achtung."
Monona Rossol, M.S., M.F.A., Industrial Hygienist
President: Arts, Crafts & Theater Safety, Inc.
Safety Officer: Local USA829, IATSE
181 Thompson St., #23
New York, NY 10012 212-777-0062
-----Original Message-----
From: Harry J. Elston <helston**At_Symbol_Here**MIDWESTCHEMSAFETY.COM>
To: DCHAS-L <DCHAS-L**At_Symbol_Here**PRINCETON.EDU>
Sent: Thu, Aug 24, 2017 5:16 am
Subject: Re: [DCHAS-L] Fume Hood Regs
Monique,
The short answer is that there are no
regulations as to when a hood is required. Russ has it down, with the inclusion that the Laboratory Standard employers to maintain exposure levels below the Action Level (if one is present) or PEL (if one is present) for the chemicals being used in a laboratory.
ANSI Z9.5 is not a regulation: It is an industry consensus standard or best management practice.
Harry
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