MULTI-POSITION APPARATUS FOR EMERGENCY REDUCTION OF NUCLEAR REACTOR POWER Russian patent published in 2021 - IPC G21C7/36 

FIELD: nuclear physics and equipment.

SUBSTANCE: invention relates to means of controlling nuclear reactor with forced circulation of heat carrier of stationary and transport nuclear reactor plants. Invention employs two self-contained automatic controllers. One automatic regulator maintains heat carrier temperature at reactor outlet by changing power output. Second automatic regulator maintains average heat carrier temperature by changing the power takeoff by the reactor heat carrier. Nuclear reactor operation control mode is possible, wherein the second regulator is disconnected when the first regulator is operational, which maintains temperature of heat carrier at reactor outlet, and includes second regulator at the moment of termination of action of the first regulator, which maintains coolant temperature at reactor outlet.

EFFECT: technical result is possibility of safely urgently reduce power of nuclear reactor, improving tactical-technical characteristics of reactor, increasing service life and efficiency of turbine and entire power plant, as well as reduced total displacement of control elements during operation, which will increase their service life, higher maneuverability of the reactor at power levels, reduced thermal stresses in its structures.

1 cl, 1 dwg