Patent ID: 11942228
Assignee: HITACHI-GE NUCLEAR ENERGY, LTD.
Field: Measurement (Instruments)
Classification: CPC G  Y | IPC G

Claim 0:
1. A device for prediction of reactor water quality of a nuclear reactor in a nuclear power plant, the device comprising:
one or more processors;
a display device; and
one or more storage devices, wherein
the one or more storage devices store a reactor water quality prediction model which is learned using learning data and with which future reactor water quality is predicted,
an explanatory variable of the reactor water quality prediction model includes a value in a predetermined period unit that is generated from data acquired in an operating nuclear power plant;
the one or more processors are configured to:
generate the value in a predetermined period unit from data acquired in a target nuclear power plant by calculating, as at least a part of the explanatory variable, a daily metal impurity accumulation amount in the nuclear reactor in the target nuclear power plant based on:
a fuel change history held on a cycle-by-cycle basis; and
a daily supplied water quality measured value;
acquire a first predicted value of the reactor water quality in the target nuclear power plant based on:
the reactor water quality prediction model; and
the value in a predetermined period unit;
receive information of a plurality of countermeasures for improving the reactor water quality; and
upon receiving the information of the plurality of countermeasures:
acquire other predicted values of the reactor water quality in the target nuclear power plant based on the countermeasures by inputting assumed values for the countermeasures, respectively and
simultaneously display, on the display device:
the first predicted value which is not based on a countermeasures; and
the other predicted values which are based on the countermeasures, respectively,
to enable comparison to determine an appropriate countermeasure from the plurality of countermeasures.