[ RadSafe ] Fume Hood Face Velocity Requirement Origin

bobcherry at satx.rr.com bobcherry at satx.rr.com
Thu Oct 19 10:16:12 CDT 2006

This question came up in the seventies when I was at USAEHA (now CHPPM). As I recall, the answer was some IH publication.
But for the real answer, ask Gordon Lodde.. He probably is the one who first put it in the AMEDD technical bulletins.
Bob C

----- Original Message ----- 
From: "Falo, Gerald A Dr KADIX" <Jerry.Falo at us.army.mil> 
Date: Thursday, October 19, 2006 10:03 am 
Subject: [ RadSafe ] Fume Hood Face Velocity Requirement Origin 
To: radsafe at radlab.nl 

> Good morning all, 
> I was asked to look into the recommended face velocity for fume 
> hoods of 
> 125 linear feet per minute (lfpm). Specifically, I am looking for the 
> origin of this recommendation, if there is any regulation 
> requiring this 
> face velocity, and measurement protocol/requirements. I have 
> Shapiro'stext (4th edition) that does cite the 125 lfpm but 
> doesn't give the 
> source nor measurement protocols. My colleagues and I assume that the 
> measurements should be made with the hood sash open about 30 - 40 cm, 
> although I've heard about measurements being made with the hood fully 
> open. 
> Any leads would be greatly appreciated. 
> Jerry Falo 
> ________________________________ 
> The statements and opinions expressed herein are my 
> responsibility; no 
> one else (certainly not my employer) is responsible, but I still 
> reservethe right to make mistakes. 
> Don't panic! - Douglas Adams in "The Hitchhiker's Guide to the Galaxy" 
> Gerald A. Falo, Ph.D., CHP 
> Kadix Systems 
> U.S. Army Center for Health Promotion and Preventive Medicine - Health 
> Physics Program 
> jerry.falo at us.army.mil 
> 410-436-4852 
> DSN: 584-4852 
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