Date: Fri, 27 May 2011 16:01:07 +0000
Reply-To: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
Sender: DCHAS-L Discussion List <DCHAS-L**At_Symbol_Here**LIST.UVM.EDU>
From: "George D. McCallion" <medchem**At_Symbol_Here**COMCAST.NET>
Subject: Re: Horizontal hood sash signage?

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We use these hood systems with the sashes that go both direction s. We typically keep the vertical plumb to the surface (minus power cords, but cork rings work here) and the horizontal sahes are what is used to  ;gain access.
We have our hoods rated at 100fpm, with all sashes down and horizontals at ~50% accessability. With all sashes closed fpm jump to ~150-160fpm, and We typically see "tornados" when performing smoke tests.
Signage will consist of the type of work being performe d, as well as the understanding that when not in use, have all sashes in th e closed position. When I was performing cGMP Cytotoxics, We would hav e EHS perform surrogate testing that related to the solvents, reagents, etc , that were to be used in the specific hood (prior to usage). Once approved , We would post suitable signage to reflect this.
Hope this helps.
George D. McCallion
Chemist III
Chemical Process Research & Developm ent
Johnson Matthey Pharmaceutical Materials
2003 Nolte Drive
West Deptford, NJ 08066-1742
Voice: 856.384.7255
Fax: 856.384.7186
E-M ail: mccalgd**At_Symbol_Here**
---------------------------------------- ----------------------------------------------------------------
----- O riginal Message -----
From: "Ralph B Stuart" <rstuart**At_Symbol_Here**CORNELL.EDU>
To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU
Sent: Friday, May 27, 2011 11:30:20 AM
S ubject: [DCHAS-L] Horizontal hood sash signage?

Has anyone developed signage and/or for fume hoods with horizontally moving sashes that help us ers understand how they are to be used? We have a collection of new hoods a t Cornell that have sashes that move both horizontally and vertically and w e'd like to come up with a pithy way of explaining to users how to use them effectively.

Thanks for any help with this.

- Ralph

< BR>Ralph Stuart CIH
Laboratory Ventilation Specialist
rstuart**At_Symbol_Here**cornell .edu

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