Assessment of Radiation Dose to Workers Resulting from External Exposure to Potassium in NORM Industries in Korea
| Autor: | Woo Jin Kim, Seung Woo Ji, Jin Ho Park, Kwang Pyo Kim, Ji Young Song, Jung Hwan Jang |
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| Rok vydání: | 2018 |
| Předmět: |
Radionuclide
Initial dose Potassium Radiation dose General Physics and Astronomy chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology 030218 nuclear medicine & medical imaging Toxicology 03 medical and health sciences 0302 clinical medicine chemistry Dose assessment 0210 nano-technology Dose rate Exposure assessment |
| Zdroj: | Journal of the Korean Physical Society. 72:1387-1392 |
| ISSN: | 1976-8524 0374-4884 |
| DOI: | 10.3938/jkps.72.1387 |
| Popis: | Potassium is a naturally-occurring radioactive material (NORM). Potassium contains 40K, a natural radionuclide that may enhance the radiation dose to workers in potassium processing facilities. The objective of the present study is to assess radiation dose to workers resulting from external exposure to potassium in NORM industries in Korea. Five potassium processing facilities were selected for this dose assessment study. Initial dose rate mapping was made through the whole facility site for scanning purposes. Based on an analysis of the initial dose rate mapping and potassium processing, the areas requiring more detailed dose rate measurements were selected. Target workers for radiation dose assessment were selected based on the second step dose rate mapping results and specific working conditions. The annual radiation dose to the target workers was assessed using the measured dose rates and hypothetical exposure scenarios. Annual radiation dose to the workers resulting from external exposure to potassium ranged between 0.003 - 0.364 mSv/yr. The results of the present study can be used to better protect workers handling naturally-occurring radioactive materials. |
| Databáze: | OpenAIRE |
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