RE: Laboratory Ventilation Standards

["Broseus, Roger (OD)" <rbroseus@exchange.nih.gov>]

Tim:

I checked in "Design of Biomedical Research Facilities," Proc of a Symp
conducted by NCI in 1979; NIH Publ 81-2305.  In there I cited the following:

Heinonen notes that ventilation with one-pass air and a negative pressure of a
few mm of water is proper for low-level labs; a max of 20 room air changes per
hour.  Nixon and Chapman suggest 12 changes / hr is adequate, with a press drop
of 5 mm of water.  These fellows wrote articles in IAEA Publ. IAEA-SM-209/47,
"Design of and Equipment for Hot Laboratories."  IAEA STI/PUB/436.

In my experience, the release of rad material does not dictate design special
beyond that for routine lab space, with the exception of nucl med departments.
Last time I checked, Reg Guide 10.8, App O (like letter "oh") had a method for
calculations in this case.  Go to
http://www.nrc.gov/NRC/RG/10/10-008r2.html#_1_48 and search for APPENDIX O.

Also of value: "Industrial Ventilation" (A Manual of Recommend Practice).
American Conference of Governmental Industrial Hygienists."

Best regards,


-- Roger W. Broseus, CHP, Ph.D.
   301-496-2253
   RogerB@nih.gov
   Roger@just.net after 1/25/2000

> -----Original Message-----
> From: Timothy.L.Popp@am.pnu.com [mailto:Timothy.L.Popp@am.pnu.com]
> Sent: Tuesday, January 11, 2000 8:15 AM
> To: Multiple recipients of list
> Subject: Laboratory Ventilation Standards
> 
> 
>   
>   I was wondering what other institutions with research type 
>   laboratories using radioactive materials required for ventilation 
>   purposes.  Currently, we require a minimum of 10 air 
> changes per hour 
>   in a laboratory using radioactive materials.  The majority of the 
>   research is done with minimal amounts of H-3 or C-14, 
> typically 1 to 2 
>   mCi or less per experiment.  For energy conservation 
> reasons, we are 
>   considering reducing this requirement.
>   
>   
>   Tim Popp
>   Pharmacia & Upjohn
>   timothy.l.popp@am.pnu.com
> **************************************************************
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