지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2021.9
- 수록면
- 2,859 - 2,865 (7page)
- DOI
- https://doi.org/10.1016/j.net.2021.03.006
이용수
초록· 키워드
오류제보하기
One of the important issues raised from the Fukushima-Daiichi accident is the safety of multi-unit siteswhen simultaneous accidents occur at the site and recently a multi-unit PSA methodology is beingdeveloped worldwide. Since all operation modes of the plant should be considered in the multi-unit PSA,the accident analysis needs to be performed for shutdown operation modes, too. In this study, a stationblackout during the mid-loop operation is selected as a reference scenario. The overall accident progressionfor the mid-loop operation is slower than that for the full-power operation because the residualheat per mass of coolant is about 6 times lower than that in the mid-loop scenario. Though the fractionsof Cs released from the core to the RCS in both operation modes are almost the same, the amount of Csdelivered to the containment atmosphere is quite different due to the chemisorption in the RCS. While45.5% of the initial inventory is chemisorbed on the RCS surfaces during the full-power operation, only2.2% during the mid-loop operation. The containment remains intact during the mid-loop operation,though 83.9% of Cs is delivered to the containment.
목차
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