The U. S. Environmental Protection Agency (USEPA) has prepared a listing of "exposure to dose" conversion factors in two reports. For internal doses, the report is entitled "Limiting Values of Radionuclide Intake and Air Concentration and Dose Conversion Factors for Inhalation, Submersion and Ingestion". For external doses, the report is called "External Exposure to Radionuclides in Air, Water, and Soil". The factors found in these two reports are useful for assessing the radiation dose to individuals who can be reasonably characterized as equivalent to "Reference Man". (For your information, Reference Man is a hypothetical individual with well-defined values for daily intakes of air and water or carrier elements, breathing rates, excretion rates, organ sizes, metabolic features, and other physical parameters. You can learn more about him by pressing the red "Reference Values" category on the left.)
The factors for various exposure scenarios have been divided into separate sections. To read each section, simply press the red section number, below. When you are through with a particular section, press the "Dose Conversion Factors" category on the left (or use your browser's "back" button) to return to this list.
Section 1 - "Inhalation Dose Conversion Factors"
Section 2 - "Ingestion Dose Conversion Factors"
Section 3 - "External Dose Factors from Radioactivity in Soil - Infinite Thickness"
Section 4 - "External Dose Factors from Radioactivity in Soil - 15 cm. Thickness"
The International Commissionon Radiological Protection (ICRP) has also prepared a listing of dose coefficients for inhalation intakes. These are provided for both one (1) and five (5) micron AMAD particle sizes and are based upon biokinetic models and data that are more current than those used for USEPA factors. To read the listing, simply press the red section number, below. When you are through, press the "Dose Conversion Factors" category on the left (or use your browser's "back" button) to return to this list.
Section 5 - "Inhalation Dose Conversion Factors", ICRP 68
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