Origination, Assumptions, Restrictions for Use of Uranium SA Calculation

["Redmond, Randy R. (RXQ) " <RXQ@ornl.gov>]

All,

I have been unable to locate the origin/good documentation of  the  uranium
gaseous diffusion process specific activity formula:  

Specific Activity  = [0.4 + 0.38 (enrichment) + 0.0034 (enrichment)^2] E-6.


The formula can be found in the Health Physics Manual of Good Practices for
Uranium Facilities and 10 CFR 20, App. B.  What I'm  really interested in
is:  (1)  how accurate is  the formula; and, (2)  is it applicable to
enrichments < 0.71  - 10 CFR 20,  App. B implies it is good only for
enrichments >  0.72.

Any help and prodding in the right direction is appreciated.

Randy Redmond
Lockheed Martin Energy Systems
P.O. Box 2009
Bldg.  9769,  MS 8081
Oak Ridge, TN  37831-8081
Email:  rxq@cosmail3.ctd.ornl.gov
Phone:  423-574-5640
Fax:  423-576-6047

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