钠冷快堆燃料破损在线监测系统探测器选型分析  

Detector Selection Analysis of Fuel Failure Online Monitoring System in Sodium-Cooled Fast Reactor

作　　者：潘君艳[1] 刘浩杰[1] 马强[1] 张杭[1] 李华[1] 段天英[1] Pan Junyan;Liu Haojie;Ma Qiang;Zhang Hang;Li Hua;Duan Tianying(Department of Fast Reactor Research and Design of China Institute of Atomic Energy,Beijing,102413,China)

机构地区：[1]中国原子能科学研究院,北京102413

出　　处：《仪器仪表用户》2022年第6期34-37,共4页Instrumentation

摘　　要：钠冷快堆燃料破损在线监测系统,由燃料破损覆盖气体监测系统和燃料破损缓发中子监测系统组成。结合系统探测方案和探测环境,阐述了国际快堆燃料破损覆盖气体监测系统和燃料破损缓发中子监测系统探测器的主要配置,对比分析了各类探测器的技术特性和应用特点。在此基础上,根据探测器的发展现状和系统的具体功能需求,归纳了探测器的选型原则和发展趋势。燃料破损覆盖气体监测系统适宜采用总放射性水平测量探测器和放射性核素分析探测器相结合的配置方案。缓发中子监测系统探测器的选型首要考虑探测环境,探测环境受制于探测方案,同时兼顾探测灵敏度和使用寿命的需求。The fuel failure online monitoring system in sodium-cooled fast reactor(SFR) is composed of the failed fuel cover gas monitoring subsystem and the failed fuel delayed neutron detection subsystem. Combined with the detection schemes and the detection environments, main configurations of radiation detectors for the failed fuel cover gas monitoring subsystem and the failed fuel delayed neutron detection subsystem have been presented. The important technical properties and the application characteristics of the radiation detectors have been compared and analyzed. On this basis, the principle and the future trend of detector selection for failed fuel detection are put forward according to the current performances and the specific functional requirements. For the fuel cover gas monitoring subsystem, the configuration scheme combining the total radioactivity detector and the radionuclide analysis detector is suitable. For the failed fuel delayed neutron detection subsystem, the neutron detector selection is mainly determined by the detection environment which is subjected to the detection scheme, and the detection sensitivity and the service life are the other influencing factors should be also taken into the consideration.

关 键 词：钠冷快堆 燃料破损探测 覆盖气体 缓发中子 选型分析 

分 类 号：TL81[核科学技术—核技术及应用]