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자료유형
학술저널
저자정보
이충위 (울산과학기술원) 이동현 (울산과학기술원) 김희령 (울산과학기술원) 이승준 (울산과학기술원)
저널정보
한국원자력학회 Nuclear Engineering and Technology Nuclear Engineering and Technology 제52권 제9호
발행연도
2020.9
수록면
2,085 - 2,091 (7page)
DOI
https://doi.org/10.1016/j.net.2020.02.010

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The license for Kori-1, the ?rst commercial reactor in Busan, Korea, was terminated in June 2017; therefore, preparations are being made for its decommissioning. Because the radioactivity of Bio-shield varies greatly throughout the structure, the doses received by the workers depend on the location, order, and duration of dismantling operations. Thus, a model for evaluating the worker external dose during the dismantling of the Kori-1 bio-shield was developed, and work scenarios for dose assessment were designed. The Dose evaluation code VISIPLAN was used for dose assessment. The dose rate around the bio-shield was evaluated and the level of exposure to the operator was evaluated according to the work scenario. The maximum annual external dose was calculated as 746.86 mSv for a diamond wire saw operator under dry cutting conditions, indicating that appropriate protective measures, such as changing dismantling sequence, remote monitoring, shield installation, and adjustment of work team are neces- sary for the safe dismantling of the bio-shield. Through these protective measures, it was found that the worker's dose could be below the dose limit

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