裂变室探测器在高温气冷堆核电站示范工程核测量系统中的应用
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摘要
高温气冷堆核电站示范工程是我国中长期发展规划中的重大专项之一,也是我国第一座拥有自主知识产权的核电站。文章介绍了高温气冷堆核电站核测量系统的工作原理和系统组成,剖析了裂变室中子探测器的特点及其在核测量系统中的应用。裂变式探测器所具有的γ信号甄别能力强、中子通量测量范围宽等优点,应用于高温气冷堆核测量系统,可以满足大空间、宽范围的堆外中子通量测量需求,有利于简化系统组成、提高经济性。与其他压水堆核电站的核测量系统相比较,应用裂变室中子探测器具有一定的优越性。
The Demonstration Project of HTR-PM(High Temperature Reactor-Pebble-bed Modules) Nuclear Power Plant is one of the major projects in China's Medium and Long Term Development Plan, and it is also the first nuclear power plant with independent intellectual property rights in China. This paper introduces the function and system components of Nuclear Instrument System(NIS) in HTR-PM, and analyses the characteristics of the fission chamberneutron detector and its application in NIS. Fission detector has the advantages of strong γ signal discrimination ability and wide range of neutron flux measurement. It can be used in NIS to meet the HTR-PM needs of large space and wide range of exterior reactor neutron flux measurement, which is conducive to simplifying the system compositio n and improving the economy. Compared with other NIS of PWR nuclear power plants, the application of fission chamber neutron detectors has certain advantages.
The Demonstration Project of HTR-PM(High Temperature Reactor-Pebble-bed Modules) Nuclear Power Plant is one of the major projects in China's Medium and Long Term Development Plan, and it is also the first nuclear power plant with independent intellectual property rights in China. This paper introduces the function and system components of Nuclear Instrument System(NIS) in HTR-PM, and analyses the characteristics of the fission chamberneutron detector and its application in NIS. Fission detector has the advantages of strong γ signal discrimination ability and wide range of neutron flux measurement. It can be used in NIS to meet the HTR-PM needs of large space and wide range of exterior reactor neutron flux measurement, which is conducive to simplifying the system compositio n and improving the economy. Compared with other NIS of PWR nuclear power plants, the application of fission chamber neutron detectors has certain advantages.
引文
[1]ZHANG Zuoyi,WU Zongxin,WANG Dazhong,et al.Current status and technical description of Chinese2×250 MWth HTR-PM demonstration plant[J].Nuclear Engineering and Design,v239,2009:1212.
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[3]于孝忠.核辐射物理学[M].北京:原子能出版社,1981:172.
[4]US.Nuclear Regulatory commission,Criteria for Accident Monitoring Instrumentation for Nuclear Power Plants[R].RG1.97,Revision 4,June 2006.
[5]Clark J.Artaud.SHIDAOWAN HTR Ex-core Neutron Flux Monitoring Systems[C].7th International Topical Conference On High Temperature Reactor.Weihai,2014.
[2]国家核安全局.HAD102-14核电厂安全有关仪表和控制系统[S].1988.
[3]于孝忠.核辐射物理学[M].北京:原子能出版社,1981:172.
[4]US.Nuclear Regulatory commission,Criteria for Accident Monitoring Instrumentation for Nuclear Power Plants[R].RG1.97,Revision 4,June 2006.
[5]Clark J.Artaud.SHIDAOWAN HTR Ex-core Neutron Flux Monitoring Systems[C].7th International Topical Conference On High Temperature Reactor.Weihai,2014.