| 摘要 |
PROBLEM TO BE SOLVED: To provide a corium shield capable of efficiently solidifying molten debris directed to a sump pit from a pedestal floor in a flow channel.SOLUTION: A corium shield 5 provided in the sump pit 6 of a reactor container comprises: a lid part 8 for covering the sump pit 6; a flow channel 7 formed between the lid part 8 and the pedestal floor 3 of the reactor container and guiding drain water into the inside of the sump pit 6 from the floor surface; and a plurality of tabular cooling fins 9 extended downward from the bottom surface of the lid part 8 to meet the flow channel 7 and faced to the floor surface through a gap. The plurality of cooling fins 9 are arranged in the width direction of the flow channel 7 at a posture extended in the flow direction of the drain water. |
