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Subject: Re: HF digestion safety
Date: Mon, 30 Nov 2009 13:56:59 -0500
Author: "Kohler, Chris E" 		Next by Date:
Subject: 4 Chemical Safety Stories from google
Date: Tue, 1 Dec 2009 08:08:34 -0500
Author: List Moderator


Date: Mon, 30 Nov 2009 14:23:34 -0500
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: Joseph Passante <Joe**At_Symbol_Here**EHRS.UPENN.EDU>
Subject: Re: HF digestion safety
In-Reply-To: <F0878287277A634C92AA608455E652A80B3B45EEA3**At_Symbol_Here**iu-mssg-mbx08.ads.iu.edu>

Chris

What quantity of  HF does your facility discharge  per month?

Joe
Joseph R. Passante, CIH, CHO
Associate Director
Chemical Hygiene Officer
Environmental Health & Radiation Safety
University of Pennsylvania
215.746.6550



On Nov 30, 2009, at 1:56 PM, Kohler, Chris E wrote:

> We just installed an HF hood with plastic ducts and fan parts, etc.  
> No scrubbers or filters though. You might check with Sentry or  
> Captair and check their ductless fume hoods to see if HF is an  
> acceptable application. I have heard the filters are expensive and  
> you must be prepared to change them at the appropriate time. The  
> other option may be to use a Parr bomb with a Teflon liner.
>
> Chris
>
> -----Original Message-----
> From: DCHAS-L Discussion List [mailto:DCHAS-L**At_Symbol_Here**LIST.UVM.EDU] On  
> Behalf Of Joseph Passante
> Sent: Monday, November 30, 2009 9:41 AM
> To: DCHAS-L**At_Symbol_Here**LIST.UVM.EDU
> Subject: [DCHAS-L] HF digestion safety
>
> Does anyone on this list have experience with proper exhaust design
> for small scale digestion using 48% HF?  The geochemistry researcher I
> am working with anticipates evaporating 2 liters of concentrated HF
> per month in a fume hood.
>
> I am interested in scrubbing technologies and if anyone has designed
> local exhaust systems that do not involve a fume hood.
>
> Thanks
>
> Joe
>
>
> Joseph R. Passante, CIH, CHO
> Associate Director
> Chemical Hygiene Officer
> Environmental Health & Radiation Safety
> University of Pennsylvania
> 215.746.6550

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