Evaluation of Effects of Impurities in Nuclear Fuel and Assembly Hardware on Radiation Source Term and Shielding
(주)코리아스칼라
- 최초 등록일
- 2023.07.31
- 최종 저작일
- 2023.06
- 12페이지/ 어도비 PDF
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서지정보
ㆍ발행기관 : 한국방사성폐기물학회
ㆍ수록지정보 : 방사성폐기물학회지 / 21권 / 2호
ㆍ저자명 : Taekyung Lee, Dongjin Lee, Kwangsoon Choi, Hyeongjoon Yun
목차
1. Introduction
2. Methodology
2.1 Theory and Computer Code
2.2 Activation and Source Terms
2.3 Shielding
3. Results
4. Conclusions
Acknowledgements
영어 초록
To ensure radiological safety margin in the transport and storage of spent nuclear fuel, it is crucial to perform source term and shielding analyses in advance from the perspective of conservation. When performing source term analysis on UO2 fuel, which is mostly used in commercial nuclear power plants, uranium and oxygen are basically considered to be the initial materials of the new fuel. However, the presence of impurities in the fuel and structural materials of the fuel assembly may influence the source term and shielding analyses. The impurities could be radioactive materials or the stable materials that are activated by irradiation during reactor power operation. As measuring the impurity concentration levels in the fuel and structural materials can be challenging, publicly available information on impurity concentration levels is used as a reference in this evaluation. To assess the effect of impurities, the results of the source term and shielding analyses were compared depending on whether the assumed impurity concentration is considered. For the shielding analysis, generic cask design data developed by KEPCO-E&C was utilized.
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