EMERGENCY PROTECTION EQUIPMENT OF ATOMIC REACTION Russian patent published in 1995 - IPC

FIELD: atomic technology. SUBSTANCE: emergency protection equipment of atomic reactor has ionization chamber transforming reactor power into electric signal. Converter taking logarithms which output signal is proportional to logarithm of measured power and differentiating amplifier with delay (time constant 5-7 s) which forms signal inversely proportional to period under mode of change of power with steady-state period are connected in series. It also includes comparator, emergency protection circuit, setting master unit which output is coupled to input of comparator linked in series, differentiating amplifier and adder connected in series. Input of amplifier is coupled to output of amplifier with delay which is linked to second input of adder and output of adder is linked to information input of comparator. EFFECT: increased speed of response of protection with emergency changes of reactivity. 5 dwg