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Seal structure, nuclear reactor building having this seal structure, nuclear power generation plant including the nuclear reactor building, and construction method of seal structure
Seal structure, nuclear reactor building having this seal structure, nuclear power generation plant including the nuclear reactor building, and construction method of seal structure
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机译：密封结构，具有该密封结构的核反应堆建筑物，包括该核反应堆建筑物的核电站以及密封结构的建造方法
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摘要
PROBLEM TO BE SOLVED: To provide a seal structure capable of ensuring fireproof even if a gap is generated between a fireproof member and a wall surface.SOLUTION: A seal structure includes: an arrangement member 2 extending along an axis O so as to be inserted into a hole 13 formed in a wall 10; a fireproof seal material 3 for closing a space between an outer circumferential surface of the arrangement member 2 and an inner circumferential surface of the hole 13; a fireproof member 5 fixed to the outer circumferential surface of the arrangement member 2 on one side of the wall 10 in a direction of the axis O, contacting the wall 10, and having a concave portion 51 formed therein to be recessed from the other side in the direction of the axis O; and a first heat expansion fireproof material 6 provided in the concave portion 51 and expanding by heat. The heat is propagated to the first heat expansion fireproof material 6 via a gap between the fireproof member 5 and the wall 10 formed by relative movement of the arrangement member 2 and the wall 10 in the direction of the axis O, whereby the first heat expansion fireproof material 6 expands.
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