Re: MDA of radionuclides in soil

[LIPTONW@detroitedison.com]

--Boundary-1613719-0-0

The licensing documentation (Technical Specifications, Offsite Dose 
Calculation Manual, etc.)for nuclear power plants specify detection 
capabilities for environmental sample analysis. These are defined as the 
maximum acceptable LLD's.  Although none are specified for soil, the LLD's for 
"sediment", in units of pCi/kr (dry) are 150 for Cs-134 and 180 for Cs-137.  
These are 10X the LLD's for water, in units of pCi/liter.  We thus generally 
take the required LLD's for sediment as 10X those for water.  They would be: 
H-3    20000 
 
Mn-54, Co-58, Co-60, Zr-95, Nb-95, Ba-140, and La-140   150 
 
Fe-59 and Zn-65      300 
 
I-131    10  
 
Contact me directly if you need additional information. 
 
Bill Lipton 



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Subject: MDA of radionuclides in soil
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Does anybody know of a reference which has values of realistically
achievable Minimum Detectable Activities for various radionuclides (as many
as relevant) in soil?

Thanks,

Kim Kearfott.


**********************************************************************
                  Kim Kearfott, Sc.D., C.H.P.

Professor                           Director of Faculty Development
Program Advisor,                 & Faculty/Women in Engineering Office
  Radiological Health Engineering   College of Engineering
Dept. of Nuclear Engineering
    & Radiological Sciences
University of Michigan              University of Michigan
Ann Arbor, MI 48109-2104            Ann Arbor, MI 48109-2116

                 telephone: (313) 763-9117
                       fax: (313) 763-4540
                    e-mail: kearfott@umich.edu
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     TIME, DISTANCE, AND SHIELDING: Good for what ails you!
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