METHOD AND SYSTEM FOR IMPROVING BORON METER MEASUREMENT ACCURACY

WIPO Patent Application WO/2023/130811

A1

The present invention relates to the field of pressurized water reactor nuclear power plant coolant boron concentration monitoring. Particularly disclosed are a method and system for improving boron meter measurement accuracy. The method for improving boron meter measurement accuracy in the present invention comprises the following steps: S1, performing temperature compensation for a collected neutron count rate on the basis of a pipeline temperature and a preset temperature compensation coefficient; S2, performing validity determination on the neutron count rate subjected to the temperature compensation; S3, selecting a reference neutron count rate from calibration test data; S4, determining, according to a normalized value of the neutron count rate measured by a boron meter, a measuring range to which the 10B concentration measured by the boron meter belongs; S5, calculating, on the basis of a calibration test fitting coefficient and the normalized value of the neutron count rate, 10B concentrations measured by the boron meter; and S6, calculating and outputting, on the basis of the 10B abundance in a nuclear island primary coolant and a selected and output 10B concentration measured by the boron meter, a total boron concentration measured by the boron meter.

ZHENG JUNWEI (CN)
LIU HANG (CN)

PCT/CN2022/127601

July 13, 2023

October 26, 2022

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CHINA NUCLEAR POWER ENG CO LTD (CN)
CHINA GENERAL NUCLEAR POWER (CN)
CGN POWER CO LTD (CN)

G21C17/022; G01N23/00

CN114400104A	2022-04-26
CN103680650A	2014-03-26
CN204102582U	2015-01-14
CN102376374A	2012-03-14
CN107610790A	2018-01-19

SCIHEAD IP LAW FIRM (CN)

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