FIELD: control of nuclear reactor during final stage of its heating for starting. SUBSTANCE: after signals of control devices are determined and set, nuclear-reactor heat-up is controlled by its power. Control elements move depending on control signal set up across final-element input. In the process, permanent signal is applied to final element input instead of power control signal in reactor heat-up section at constant value of forward action, negative temperature effect of reactivity, positive error signal, and positive results of comparison of desired value and measurement results of signal for temperature starting from time setting moment. Then power is further increased by displacing control element at slower speed towards reactivity increase. In addition, mentioned connection of permanent signal is made in desired time space upon setting time moment even in case results of mentioned comparison are inadequate provided other above-mentioned characteristics of reactor and its temperature condition are adequate. Such control is maintained up to arrival of signal indicating that heat-up of reactor has ceased which disconnects permanent signal from final element input. EFFECT: improved reliability of control. 9 cl, 1 dwg
