DCHAS-L Discussion List Archive
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Subject: Re: Horizontal hood sash signage?
Date: Fri, 27 May 2011 08:36:13 -0700
Author: "Demer, Frank R - (demer)"
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Subject: Re: Horizontal hood sash signage?
<
div style='font-family: Arial; font-size: 12pt; color: #000000'> 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.
Cheers!
---------------------------------------------
Date: Fri, 27 May 2011 16:01:07 +0000
Author: "George D. McCallion"
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Date: Fri, 27 May 2011 12:00:34 -0400
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: "Haugen, Bob" <BobHaugen**At_Symbol_Here**KEWAUNEE.COM>
Subject: Re: Horizontal hood sash signage?
In-Reply-To: <B9C496515E843746B60EA72DA38D8CA835333A3924**At_Symbol_Here**MBXA.exchange.cornell.edu>
The hood manufacturer should have such signage.
-----Original Message-----
From: DCHAS-L Discussion List [mailto:DCHAS-L**At_Symbol_Here**list.uvm.edu] On Behalf Of Ra
lph B Stuart
Sent: Friday, May 27, 2011 11:30 AM
To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU
Subject: [DCHAS-L] Horizontal hood sash signage?
Has anyone developed signage and/or for fume hoods with horizontally moving
sashes that help users understand how they are to be used? We have a colle
ction of new hoods at Cornell that have sashes that move both horizontally
and vertically and we'd like to come up with a pithy way of explaining to u
sers how to use them effectively.
Thanks for any help with this.
- Ralph
Ralph Stuart CIH
Laboratory Ventilation Specialist
rstuart**At_Symbol_Here**cornell.edu
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