1993/07/31-Regulatory Guide 8.9 (Revision 1), Acceptable Concepts, Models, Equations, and Assumptions for a Bioassay Program

Section 20.1204 of 10 CFR Part 20, "Standards for Protection Against Radiation," requires that each licensee, when required by 10 CFR 20.1502, take suitable and timely measurements of quantities of radionuclides in the body, quantities of radionuclides excreted from the body, concentrations of radioactive materials in the air in the work area, or any combination of such measurements as may be necessary for detection and assessment of individual intakes of radioactive material. Furthermore, 10 CFR 20.1204 (c) (1) allows for the use of specific information on the physical and biochemical properties of the radioactive material deposited in the body in determining an individual's internal dose. Also, as stated in 10 CFR 20.1703(a)(3)(ii), if respiratory protection equipment is used to limit intakes of airborne radioactive material, the licensee's respiratory protection program is to include bioassay measurements, as appropriate, to evaluate actual intakes of airborne