STORAGE UNIT OF POLLUTED WATER

摘要

PROBLEM TO BE SOLVED: To provide a storage unit of polluted water capable of simplifying the unit and reducing the cost.SOLUTION: The storage unit includes: a tank 11 having a hollow shape, which is capable of reserving polluted water containing radioactive substance therein; a suction/discharge unit 12 that sucks gas to discharge the gas from the tank 11 to the outside; a removal unit 13 that removes the radioactive substance from the gas discharged from the tank 11; and an air supply device 14 capable of supplying the air from the outside to the inside of the tank 11 when the differential pressure between the inner pressure of the tank 11 and the external pressure reaches a preset predetermined differential pressure.