NUCLEAR REACTOR INSTALLATION AND ACCIDENT PROCESSING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a nuclear reactor installation and an accident processing method in which local increase of hydrogen concentration is alleviated in a case of hydrogen leakage in a nuclear reactor building by adding a minimum facility.SOLUTION: A nuclear reactor installation 100 comprises a nuclear reactor building 10 which is arranged surrounding a nuclear reactor containment 3. In the nuclear reactor building 10, a plurality of floors are formed being partitioned by slabs 14 extending horizontally, and a staircase 15a vertically extending through the floors at least to the highest floor is installed. The nuclear reactor installation 100 comprises: a hatch 14c which is arranged at the slab 14 in which the upper and lower floors are communicated with each other at a position different from the staircase 15a; a plurality of door openings 15b which communicates the staircase 15a to each of the floors and a plurality of door mechanisms which are arranged at the same; a hydrogen processing device 7 which is installed at the highest floor of the nuclear reactor building 10; a hydrogen detector 21 and a smoke detector 22 which are respectively arranged at the floors; and a controller which controls a circulation path in the nuclear reactor building according to output of the hydrogen detector and the smoke detector.SELECTED DRAWING: Figure 1