Dose assessment for ingestion of a 330 kilobecquerel 60Co hot particle
| Autor: | W. J. Chase, W. H. Wolodarsky, D. W. Whillans |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Canada
Radiation Dosage Models Biological Sensitivity and Specificity Whole-Body Counting Effective dose (radiation) Nuclear Reactors Occupational Exposure Humans Ingestion Computer Simulation Radiology Nuclear Medicine and imaging Cobalt Radioisotopes Particle Size Radiometry Radiation Radiological and Ultrasound Technology Equivalent dose business.industry Radiochemistry Public Health Environmental and Occupational Health Reproducibility of Results General Medicine Organ Specificity Kilobecquerel Dose assessment Body Burden Environmental science Radiochemical analysis Hot particle Whole body Nuclear medicine business Relative Biological Effectiveness |
| Zdroj: | Radiation Protection Dosimetry. 127:90-92 |
| ISSN: | 1742-3406 0144-8420 |
| DOI: | 10.1093/rpd/ncm256 |
| Popis: | On leaving the irradiated fuel bay at Pickering A nuclear power station, a worker triggered a whole body monitor alarm with activity in or on his head, and despite careful decontamination techniques he subsequently swallowed a hot particle. Over the next 3 d, the radioactivity was tracked through the body. It was then excreted in a single faecal sample and recovered for physical and radiochemical analysis. This analysis demonstrated that the particle contained 330 kBq of 60Co and only traces of other radioactivity. Its dimensions were approximately 50-130 microm and its composition was consistent with that of Stellite 6. A dose assessment was carried out taking into account the residence time of the particle in the mouth and its transit through the body. The estimated committed effective dose was 1.4 mSv, and the equivalent dose to the maximally exposed 1 cm2 of skin, 81 mSv. |
| Databáze: | OpenAIRE |
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