[ RadSafe ] efficiency rating for HEPA filter in rad hood

Stroud, Ed Ed.Stroud at dphe.state.co.us
Thu Oct 20 12:19:16 CDT 2011

Hello Curtis,
A HEPA filter, alone, would have a very low efficiency for I-131, if at all. Normally, some type of charcoal filter is used to remove/lessen these emissions. 

Ed Stroud, Compliance Lead
Radioactive Materials Unit
Colorado Department of Public Health and Environment

-----Original Message-----
From: radsafe-bounces at health.phys.iit.edu [mailto:radsafe-bounces at health.phys.iit.edu] On Behalf Of Hofer, Curtis
Sent: Thursday, October 20, 2011 11:15 AM
To: The International Radiation Protection (Health Physics) Mailing List
Subject: [ RadSafe ] efficiency rating for HEPA filter in rad hood


Does anyone the efficiency rating for a HEPA filter in a fume hood that may be used for radioiodinations?  I was unable to find anything in 10 CFR 20 about fume hoods.

Thanks in advance and have a great day!

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