Disclosed is nuclear power plant fuel assembly integrity judgment method

The invention belongs to the technical field of nuclear reactor radiochemistry, and particularly relates to a nuclear power plant fuel assembly integrity judgment method. The method includes: samplingand analyzing gamma nuclide concentration data of the main coolant system, wherein the gamma nuclide...

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Main Authors YE ZHANGHAN, ZHANG JUNWEI, WU ZHONGLIANG, WANG BAO, CAI JINPING, ZENG QINGJIE, CAI GUANGMING, ZHANG YU, TAN HAIQING
Format Patent
LanguageChinese
English
Published 08.05.2020
Subjects
NUCLEAR ENGINEERING
NUCLEAR PHYSICS
NUCLEAR REACTORS
PHYSICS
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Summary:The invention belongs to the technical field of nuclear reactor radiochemistry, and particularly relates to a nuclear power plant fuel assembly integrity judgment method. The method includes: samplingand analyzing gamma nuclide concentration data of the main coolant system, wherein the gamma nuclide concentration data comprises Xe-133 and Xe-135; dividing the Xe-133 concentration data obtained byanalysis by the Xe-135 concentration data to obtain a ratio; ranking the ratios of Xe-133 to Xe-135 in all the main coolant sampling analysis data in the reactor operation period in an ascending order from small to large; carrying out straight line fitting on the data subjected to ascending sort to obtain a fitting straight line formula and a straight line slope thereof; when the Xe-133/Xe-135 ratio fitting straight line slope is greater than 0.01, determining that the fuel assembly is damaged, and when the Xe-133/Xe-135 ratio fitting straight line slope is less than 0.005, determining that the fuel assembly is not da
Bibliography:Application Number: CN201911396837