Re: Laboratory Ventilation Standards

[Rachid Zitouni <azittouni@yahoo.com>]

You haven't mentioned the air volume in your
laboratory but for the amount of radioactivity used,
10 air volume changes per hour appears to be far too
high. Ventilation for comfort should be enough to
maintain air concentrations below the applicable
regulatory limits (MPC's or DAC's). If you wish to
determine an optimised air renewal volume per hour,
you may consider using the models proposed in ICRP 37.

A. Zitouni,
azittouni@yahoo.com

--- Timothy.L.Popp@am.pnu.com wrote:
>   
>   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
>
************************************************************************
> The RADSAFE Frequently Asked Questions list,
> archives and subscription
> information can be accessed at
> http://www.ehs.uiuc.edu/~rad/radsafe.html
> 
__________________________________________________
Do You Yahoo!?
Talk to your friends online with Yahoo! Messenger.
http://im.yahoo.com
************************************************************************
The RADSAFE Frequently Asked Questions list, archives and subscription
information can be accessed at http://www.ehs.uiuc.edu/~rad/radsafe.html