RE: Uranium Uptake Above 10 CFR 20 Limit

[William Lorenzen <LORENZEN_W@A1.TCH.Harvard.edu>]

          Why is a 10mg/week of "soluble" uranium limit even discussed?  Is 
          it more restrictive that the committed effective dose from the 
          class Y U3O8?  If one were to look at bioassay models for class Y 
          I'm not sure urinalysis is the preferred method.
          
          I though that ~10mg of insoluble U3O8 in the lungs would equate to 
          about, if not greater than, 5 rem TEDE.  Does anyone have INDOS and 
          can run a quick DIL table for U3O8 to see what fraction might be in 
          the urine?   
          
          William A. Lorenzen
          Children's Hospital
          Boston, MA 02115
          
          lorenzen_w@a1.tch.harvard.edu

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