Method for determining whether fuel assembly of nuclear power plant is damaged

• Main Authors: ZHANG CHENG, LU WEI, CHEN YONG, CAI JINPING, LI HAIKE, LIU CHUANG, ZHANG JUN, QU DI, CHENG XIU, CAO GANG, ZHAN XIAOCHUAN, YE ZHANGHAN, HUANG CHENG, WU ZHONGLIANG, FAN BINGCHEN, SONG KUIKUI, CHEN ZHICHEN
• Format: Patent
• Language: Chinese; English
• Published: 06.03.2020
• Subjects: NUCLEAR ENGINEERING; NUCLEAR PHYSICS; NUCLEAR REACTORS; PHYSICS

The invention discloses a method for determining whether a fuel assembly of a nuclear power plant is damaged. The method includes the following steps: S1, heating a normal fuel assembly, and recordingan activity change value X0 of Xe-133 before and after heating of the normal fuel assembly; S2, heating a suspicious fuel assembly, recording the activity change value X0 of Xe-133 before and after heating of the suspicious fuel assembly, determining that the suspicious fuel assembly is a normal assembly under the condition of N1/N0 < 2, and determining the suspicious fuel assembly as a suspicious fuel assembly under the condition of N1/N0 >= 2, and introducing the suspicious fuel assembly into the step S3; and S3, performing radioactivity tests on a Cs-containing water sample in the water loop of the suspicious fuel assembly in the step S2, and performing radioactivity tests on Cs-containing water sample in the water loop of fuel assemblies which are not heated in the step S1. 一种核电站燃料组件破损的判断方法，包括以下步骤：S1：对正常的燃料组件