Environmental Indices for Radioactivity Releases
Release of radioactive material to the environment may result in significant radiation exposure of man. Radiation exposure may occur through any one of a number of exposure modes; each mode, in turn, may have any number of subordinate exposure pathways of potential importance. The exposure modes of principal importance following an environmental release of radioactivity may be classified in two groups: (1) internal (radiation source within the body, i.e., inhalation and ingestion) and (2) external (radiation source outside the body, i.e., immersion in contaminated air, submersion in contaminated water, and exposure to a contaminated surface). Adequate assessment of an environmental release of radioactivity requires that consideration be given to possible dose contributions for each of these exposure modes.
KeywordsRadiological Protection Environmental Release Dose Model Environmental Impact Statement Exposure Mode
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