Re: To Bioassay or not to Bioassay!!, per Alex Zapantis

["Charles Meyer" <CMEYER@brc1.tdh.state.tx.us>]

> All opinions appreciated. Also, am I reinventing the wheel here? I suspect
> that I might be.


Alex,
      You might be interested in reviewing our Nuclear Regulatory  
Commission's Regulatory Guide's 8.9 and 8.25. In 8.9, I believe, the 
NRC states that for the purpose of determining whether or not 
internal dose estimation is necessary,a licensee may defacto 
establish that bioassays for intake of airborne radionuclides are not 
necessary if less than 10,000 ALI's are handled in the lab per year.  
This is based on, again, I believe, Alan Brodsky's empirically 
derived 10E-6 resuspension factor.  If the inhalation and ingestion 
ALI's for the radionuclides in question are significantly different, 
you might want to consider that in your policy/procedure manual.

             ***************************************
               Russ Meyer                            
               Internet: cmeyer@brc1.tdh.state.tx.us 
               tel: 512/834-6688                                                    
               fax: 512/834-6654
             ***************************************