External Exposure to Radionuclides in Air, Water, and Soil: Exposure-to-Dose Coefficients for General Application, Based on the 1987 Federal Radiation Protection Guidance. Federal Guidance Report No. 12. Erratum.

摘要

This report tabulates dose coefficients for external exposure to photons and electrons emitted by radionuclides distributed in air, water, and soil. It is intended to be a companion to Federal Guidance Report No. 11 which tabulated dose coefficients for the committed dose equivalent to tissues of the body per unit activity of inhaled or ingested radionuclides. The dose coefficients for exposure to external radiation presented here are intended for the use of Federal agencies in calculating the dose equivalent to organs and tissues of the body, as were those in Federal Guidance Report No. 11. Note that the dose coefficients for air submersion in this report update those given in Federal Guidance Report No. 11. These dose coefficients are based on previously developed dosimetric methodologies, but include the results of new calculations of the energy and angular distributions of the radiations incident upon the body and the transport of these radiations within the body. Particular effort was devoted to expanding the information available for the assessment of the radiation dose from radionuclides distributed on or below the surface of the ground. Details of the underlying calculations and of changes from previous work are presented in Section II and in the appendices.