Implementation of the NCRP Wound Model

Richard E. Toohey PhD CHP
Associate Director Independent Environmental Assessment & Verification (IEAV)
& Senior Scientific Advisor, REAC/TS
Oak Ridge Institute for Science & Education (ORISE)
Oak Ridge Tennessee USA

Abstract

The NCRP Wound Model describing the retention of selected radionuclides at the site of a contaminated wound and their uptake into the transfer compartment has been combined with the ICRP element-specific systemic models for those radionuclides to derive dose coefficients for intakes via contaminated wounds. These coefficients can be used to generate derived regulatory guidance (i.e., the activity in a wound that would result in an effective dose of 20 or 50 mSv, or in some cases, an organ equivalent dose of 500 mSv; and clinical decision guidance, i.e., activity levels that would indicate the need for consideration of medical intervention to remove activity from the wound site, administration of decorporation therapy or both. Data are provided for thirty-eight radionuclides commonly encountered in various activities such as those involving nuclear weapons, fuel fabrication or recycling, waste disposal, medicine, research, and nuclear power. These include: 3H, 14C, 32P, 35S, 59Fe, 57,58,60Co, 85,89,90Sr, 99mTc, 106Ru, 125,129,131I, 134,137Cs, 192Ir, 201Tl, 210Po, 226,228Ra, 228,230,232Th, 234,235,238U, 237Np, 238,239,240,241Pu, 241Am, 242,244Cm, and 252Cf.