by U.S. Environmental Protection Agency, Office of Radiation and Indoor Air in Washington, D.C .
Written in English
|Other titles||Exposure-to-dose coefficients for general application, based on the 1987 federal radiation protection guidance|
|Statement||[prepared for the Office of Radiation and Indoor Air, U.S. Environmental Protection Agency ; by Keith F. Eckerman and Jeffrey C. Ryman (Oak Ridge National Laboratory)]|
|Series||Federal guidance report -- no. 12|
|Contributions||Ryman, Jeffrey Clair, United States. Environmental Protection Agency. Office of Radiation and Indoor Air, Oak Ridge National Laboratory|
|The Physical Object|
|Pagination||x, 235 p.|
|Number of Pages||235|
Federal Guidance Report No. 15 (FGR 15), External Exposure to Radionuclides in Air, Water and Soil, tabulates age-specific reference person effective dose rate coefficients for 1, radionuclides based on external exposure to radionuclides distributed in air, water or soil. Federal Guidance Report No. 15, External Exposure to Radionuclides in Air, Water and Soil, is part of a series designed to provide technical information for use in implementing radiation. External exposure to radionuclides in air, water, and soil. FEDERAL GUIDANCE REPORT NO. 12 EXTERNAL EXPOSURE TO RADIONUCLIDES IN AIR, WATER, AND SOIL Exposure-to-Dose Coefficients for General Application, Based on the Federal Radiation Protection Guidance Keith F. Eckerman and Jeffrey C. Ryman Oak Ridge National Laboratory Oak Ridge, Tennessee Office of Radiation and Indoor Air U.S.
DOE () External dose-rate conversion factors for calculation of dose to the public. DOE/EH Department of energy, Washington; Eckerman KF, Ryan JC. External exposure to radionuclides in air, water, and soil. Federal guidance report no. Oak Ridge: Oak Ridge National Laboratory; Endo A, Yamaguchi Y, Eckerman KF. External exposure to radionuclides in Air, Water, and Soil. Federal Guidance Report No Office of Radiation and Indoor Air, U.S. EPA, Washington, DC (). Exposure to Radionuclides (FRG # 13), September This document is a compilation of risk factors for doses from external gamma radiation and internal intakes of radionuclides. FRG #13 is the basis of the radionuclide risk coefficients used in the EPA Health Effects Assessment Summary Tables (HEAST, EPA ) and in computer dose codes such. The brine water flowed across a livestock field, entering a stream and then a city reservoir, forcing the town to temporarily shut it down. (The EPA safe drinking-water .
SourcesThere are two sources of radioactive contamination in drinking water. The first is naturally occurring radionuclides contained in the soil that water moves through. Some areas in Florida are susceptible to contamination from phosphate-rich soils and rock. The second source of radioactive contamination comes from man-made sources. There is no known man-made contamination. As part of a broader effort to calculate effective dose rate coefficients for external exposure to photons and electrons emitted by radionuclides distributed in air, soil or water, age-specific stylized phantoms have been employed to determine dose coefficients relating dose rate to organs and tissues in the body. Equation 4: Screening Level Equation for External Exposure to Radionuclides in Soil ssr - TR EXT T^TJ SFex(—)xEDx ACF x [ETo + (ETi x GSF)] Parameter/Definition (units) TR/target cancer risk (unitless) SFe/external exposure slope factor (g/pCi/yr) EF/exposure frequency (d/yr) ED/exposure duration (yr) ACF/area correction factor ET0/exposure. How the EPA conducts risk assessment to protect human health and the environment. Several assessments are included with the guidelines, models, databases, state-based RSL Tables, local contacts and framework documents used to perform these assessments.