METHOD FOR MONITORING THE TECHNICAL CONDITION OF THE DIRECT CHARGE SENSOR OF THE IN-REACTOR CONTROL SYSTEM OF A NUCLEAR REACTOR Russian patent published in 2022 - IPC G21C17/00 

FIELD: technical diagnostics.

SUBSTANCE: invention relates to a means for technical diagnostics of direct charge sensors in in-reactor control systems of nuclear reactors. The sensor is included in the system for obtaining in-reactor information according to the equivalent circuit of the sensor measuring circuit in the diagnostic dynamic mode. Using the measurement results, the sensitivity value of the sensor is found and the value of the leakage current is estimated in the normal operation of the sensor. Then, taking into account the possible error in measuring the current through the load resistor, a conclusion is made about the possibility of further use of the sensor and, if necessary, it is replaced.

EFFECT: invention provides the ability to track the decrease in the detector sensitivity during the nuclear reactor campaign, which allows the detector to be decommissioned when the minimum allowable value of the detector sensitivity to the neutron flux is reached, as well as the ability to track the change in the neutron flux in the transient operating modes of a nuclear reactor, which makes it possible to use the sensor in transient operating modes of a nuclear reactor.

1 cl, 6 dwg