FIELD: power industry.
SUBSTANCE: system contains an air heat exchanger circuit with internal bottom heat exchanger located directly in the reactor active zone, and external heat exchanger in the air exhaust duct outside the sealed envelope. At that, heat exchangers and connecting pipelines are filled with liquid sodium, and a magnetohydrodynamic pump connected to an additional thermocouple installed in the reactor active zone is included into the rupture of one of the external heat exchanger pipelines. The external receiver of excess heat energy where the external heat exchanger is installed, can be made from a ventilated duct connected to the station exhaust pipe or as an additional heat exchanger connected to the external heat exchanger pipeline.
EFFECT: increased reliability due to provision of a continuous mode of operation for energy releases removal from the reactor active zone, regardless of the state and operation of the existing active system for excess heat energy removal from the reactor, as well as for complete disconnections of the main and backup power sources of the nuclear power plant.