METHOD FOR MANAGING STOPPAGE OF PRESSURISED-WATER NUCLEAR REACTOR Russian patent published in 2019 - IPC G21C15/18 

FIELD: nuclear reactors.

SUBSTANCE: invention relates to a method for controlling the shutdown of a water-cooled nuclear reactor. In case of leak detection from first and/or second circuit in steam generator, leakage of first/second circuit of steam generator is detected; automatically shutting down the reactor and insulating the damaged steam generator; the corresponding emergency cooling means is actuated as soon as the pressure in the first circuit falls below the safety pressure of the safety valves of the steam generator, the emergency means of cooling of the damaged steam generator is isolated, and passive cooling of reactor is continued with the help of remaining steam generators and cooling means. First and/or the second circuit in the steam generator is equipped with a safety valve, besides, the generator is connected to the reactor and connected to the emergency cooling facility.

EFFECT: technical result is possibility to eliminate leakage of heat carrier from first circuit of steam generator to second without intervention of operator or external power supply in water-and-water reactor with passive safety without using main safety systems, providing for quick depressurisation in the first circuit by opening of protective shell or other intermediate container to minimize contamination of territory, and without emissions into environment.

4 cl, 3 dwg