DIGITAL PERIOD METER-REACTIVITY METER Russian patent published in 2018 - IPC G21C17/14 G21C17/104 

FIELD: nuclear physics and equipment.

SUBSTANCE: invention relates to the field of nuclear reactors control and can be used in nuclear reactors control and protection systems. Period meter-reactivity meter contains smoothing filter, analog-to-digital converter, period meter with output to the indicating instrument, inverter with output to the second indicating instrument, a multiplication unit and reactivity calculator with output to the second indicating instrument.

EFFECT: simplification of the reactivity meters algorithmic and instrumental implementation, unification of reactivity meters and period meters, allowing to graduate the period meters in reactivity units, reduction in the number of indicating instruments in the NPP ACS, improvement of the NPP ACS ergonomics and efficiency, and ensuring consistency between the current values of period and reactivity from the safety system settings point of view for the adequate decision making on the nuclear power plant state.

1 cl, 5 dwg