Assessing dose equivalent from intensive short-term U product inhalation.
Intensive exposure of a product packaging operator to U product dust resulted in the uncontrolled inhalation of natural U. In-vivo counting yielded an estimate of about 40 mg of natural U initially deposited in the lung. An effective committed dose equivalent in the range of 67 mSv and 137 mSv was calculated to correspond to this lung contamination, using a single exponential lung clearance and the modified ICRP models, respectively. The effective committed dose equivalent of a person 47 y old involved in this incident can hardly be used to quantify the risk, and therefore committed and annual dose equivalent systems were discussed in light of risk assessment.
Kvasnicka
J
J
Department of Mines and Energy, Darwin, Northern Territory, Australia.
D000328:Adult; D000393:Air Pollutants; D000395:Air Pollutants, Occupational; D000396:Air Pollutants, Radioactive; D006801:Humans; D008168:Lung / Q000528:radiation effects; D008875:Middle Aged; D008954:Models, Biological; D009381:Neoplasms, Radiation-Induced / Q000453:epidemiology; D011829:Radiation Dosage; D011834:Radiation Monitoring / Q000379:methods; D012119:Respiration; D012306:Risk; D014501:Uranium
D000393:Air Pollutants; D000395:Air Pollutants, Occupational; D000396:Air Pollutants, Radioactive; D014501:Uranium