高速无源燃料棒^(235)U富集度检测设备研制  

Development of High-speed Passive Fuel Rod^(235)U Enrichment Detection Equipment

作　　者：王长虹 刘明 张雷 黄少川 马金波 汪陆 WANG Changhong;LIU Ming;ZHANG Lei;HUANG Shaochuan;MA Jinbo;WANG Lu(China Nuclear Power Engineering Co.,Ltd.,Zhengzhou Branch,Zhengzhou 450052,China)

机构地区：[1]中国核电工程有限公司郑州分公司,郑州450052

出　　处：《核电子学与探测技术》2023年第6期1113-1121,共9页Nuclear Electronics & Detection Technology

基　　金：中国核电工程有限公司自主科研项目ZZKY1701。

摘　　要：高速无源燃料棒235U富集度检测设备采用小型化模块化BGO+SiPM探测器串列及集成了放大、甄别、信号采集、网络传输、I/O功能的多通道核电子仪器组成检测体,设计恒温箱对检测体温度进行精准控制,通过燃料棒传输及上下料装置完成燃料棒235U富集度及棒内富集度异常芯块的全自动检测。设备具有良好的芯块年龄校正功能。测试表明,单通道96只探测器检测速度6 m/min时,富集度检测精度优于2.1%,对基体富集度3.4%、富集度偏差8.73%的异常芯块检出率为70%,检测置信度95%。The high-speed passive fuel rod^(235)U enrichment detection equipment adopts a miniaturized modular BGO+SiPM detector in series and a multi-channel nuclear electronic instrument integrated with amplification,discrimination,signal acquisition,network transmission,and I/O functions to form a detection body.A constant temperature box is designed to accurately control the detection temperature,and the fuel rod~(235)U enrichment and abnormal enrichment pellets inside the rod are fully automatically detected through the fuel rod transmission and loading and unloading devices.This detection equipment has good age correction function of pellet.The test shows that when the detection speed of 96 detectors in a single channel is 6 m/min,the enrichment detection accuracy is better than 2.1%,and the detection rate of abnormal pellets with a substrate enrichment of 3.4%and an enrichment deviation of 8.73%is70%,with a detection confidence of 95%.

关 键 词：燃料棒 无源 ^(235)U富集度 检测设备 BGO SIPM 

分 类 号：TL329[核科学技术—核技术及应用]