COOLING WATER RESERVOIR AND NUCLEAR REACTOR BUILDING PASSIVE COOLING SYSTEM COMPRISING SAME

摘要

The purpose of the present invention is to prevent a nuclear reactor building from being pressurized and heated again when the nuclear reactor building is cooled in the event of a severe accident. The present invention comprises: a reservoir tank in which cooling water is stored; a partition part which is disposed in the reservoir tank and partitions the inside of the reservoir tank into a first storage tank and a second storage tank so as to separate the cooling water in the reservoir tank; and an inflow part which is disposed in the partition part and allows the cooling water of the second storage tank to naturally flow into the first storage tank by the difference between the water levels of the first and second storage tanks when the water level of the first storage tank is lowered. Accordingly, the present invention can quickly stabilize the performance of a passive cooling system for a nuclear reactor building, thereby preventing a deterioration in the performance of the passive cooling system for the nuclear reactor building, and can continuously reduce the pressure and temperature of the nuclear reactor building, thereby preventing the occurrence of a secondary accident such as the destruction of the nuclear reactor building.