Radiological Safety Assessment for a Near-Surface Disposal Facility Using RESRAD-ONSITE Code
| Autor: | Tae-Man Kim, Jiseon Jang, Dae Sung Lee, Chun-Hyung Cho |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Radionuclide
Waste management Renewable Energy Sustainability and the Environment Radioactive waste Management Monitoring Policy and Law Contamination Land area Erosion rate Nuclear decommissioning Fuel Technology Nuclear Energy and Engineering Radiological weapon Environmental science Contamination zone Waste Management and Disposal |
| Zdroj: | Journal of Nuclear Fuel Cycle and Waste Technology(JNFCWT). 19:123-132 |
| ISSN: | 2288-5471 1738-1894 |
| DOI: | 10.7733/jnfcwt.2021.19.1.123 |
| Popis: | Radiological impact analyses were carried out for a near-surface radioactive waste repository at Gyeongju in South Korea. The RESRAD-ONSITE code was applied for the estimation of maximum exposure doses by considering various exposure pathways based on a land area of 2,500 m2 with a 0.15 m thick contamination zone. Typical influencing input parameters such as shield depth, shield materials’ density, and shield erosion rate were examined for a sensitivity analysis. Then both residential farmer and industrial worker scenarios were used for the estimation of maximum exposure doses depending on exposure duration. The radiation dose evaluation results showed that 60Co, 137Cs, and 63Ni were major contributors to the total exposure dose compared with other radionuclides. Furthermore, the total exposure dose from ingestion (plant, meat, and milk) of the contaminated plants was more significant than those assessed for inhalation, with maximum values of 5.5×10−4 mSv‧yr−1 for the plant ingestion. Thus the results of this study can be applied for determining near-surface radioactive waste repository conditions and providing quantitative analysis methods using RESRAD-ONSITE code for the safety assessment of disposing radioactive materials including decommissioning wastes to protect human health and the environment. |
| Databáze: | OpenAIRE |
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