원문정보
초록
영어
MCCI, one of the ex-vessel phenomena during a severe accident, is generally caused by mutual reactions between molten core and reactor building basemat concrete, but occurs between sacrificial materials made by concrete and corium in APR nuclear power plant with PECS applied. In this paper, MCCI analysis was performed to design and apply a device to block the core melt at the junction connected to the ICI cavity sump from the core catcher installed in the reactor cavity of the APR. Unlike the sacrificial material, which has a cooling effect by inducing erosion of the ex-vessel core melt, the device is composed of concrete applied as a barrier to protect the ICI cavity sump. The decent thickness of the barrier wall of the device was calculated.
목차
1. 서론
2. 코어캐처 노심용융물 차단설비
2.1 노심용융물 차단 원리
2.2 노심용융물 차단 설비 형상 및 재질
3. 해석 조건 및 방법
3.1 전산해석코드 및 분석조건
3.2 사고 시나리오 선정
4. 해석결과 및 고찰
4.1 노외 노심용융물
4.2 희생물질 침식
5. 결론
References