Re: progeny nuclides and ALI/DAC

[LIPTONW@dteenergy.com]

10 CFR 20, Appendix B, states that, "The ALI and DAC values relate to
exposure 
to the single radionuclide named, but also include contributions from the 
in-growth of any daughter radionuclide produced in the body by the decay of 
the parent.  However, intakes that include both the parent and the daughter 
radionuclides should be treated by the general method appropriate for 
mixtures." 
 
The opinions expressed are strictly mine. 
It's not about dose, it's about trust. 
 
Bill Lipton 
liptonw@dteenergy.com 
 
You wrote: 
 
>Can anyone tell me if dose from progeny nuclides are included in the FGR 11 
>ALI and DAC numbers?  I am going through some Ra-226 calculations and would 
>like to know if these must be repeated for each downstream nuclide.  I have 
>looked through the introductory matter in FGR 11 and have also looked 
>through ICRP 30 but have been unable to make this determination.   

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