Estimates of internal-dose equivalent from inhalation and ingestion of selected radionuclides
This report presents internal radiation dose conversion factors for radionuclides of interest in environmental assessments of nuclear fuel cycles. This volume provides an updated summary of estimates of committed dose equivalent for radionuclides considered in three previous Oak Ridge National Laboratory (ORNL) reports. Intakes by inhalation and ingestion are considered. The International Commission on Radiological Protection (ICRP) Task Group Lung Model has been used to simulate the deposition and retention of particulate matter in the respiratory tract. Results corresponding to activity median aerodynamic diameters (AMAD) of 0.3, 1.0, and 5.0 ..mu..m are given. The gastorintestinal (GI) tract has been represented by a four-segment catenary model with exponential transfer of radioactivity from one segment to the next. Retention of radionuclides in systemic organs is characterized by linear combinations of decaying exponential functions, recommended in ICRP Publication 30. The first-year annual dose rate, maximum annual dose rate, and fifty-year dose commitment per microcurie intake of each radionuclide is given for selected target organs and the effective dose equivalent. These estimates include contributions from specified source organs plus the systemic activity residing in the rest of the body; cross irradiation due to penetrating radiations has been incorporated into these estimates. 15 references.
- Research Organization:
- Evaluation Research Corp., Oak Ridge, TN (USA)
- DOE Contract Number:
- AC04-78AL05346
- OSTI ID:
- 5596544
- Report Number(s):
- WIPP-DOE-176; ON: DE83017998
- Resource Relation:
- Other Information: Microfiche only, copy does not permit paper copy reproduction. Original copy available until stock is exhausted
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
RADIOISOTOPES
DOSE EQUIVALENTS
ACUTE EXPOSURE
DATA COMPILATION
DOSE COMMITMENTS
GASTROINTESTINAL TRACT
INGESTION
INHALATION
INTERNAL IRRADIATION
LUNGS
MAN
ORGANS
ANIMALS
BODY
DATA
DIGESTIVE SYSTEM
INFORMATION
INTAKE
IRRADIATION
ISOTOPES
MAMMALS
NUMERICAL DATA
PRIMATES
RESPIRATORY SYSTEM
VERTEBRATES
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