中子通量测量系统可靠性

核电堆芯中子通量测量系统是对核反应堆进行中子通量实时精准测量的专用工具,其可靠性对核反应堆的运行也有重要影响.针对中子通量测量系统多状态的特点,提出一种将Markov模型和GO法结合的方法.首先通过Markov状态空间法对中子通量测量系统的可靠性进行分析建模,求得系统处于各个运行状态下的概率,然后根据系统原理构建GO图,用GO法实现了多状态下的中子通量测量系统可靠性分析.最后以某核电站中子通量测量系统为算例,验证了该方法,为中子通量测量系统可靠性的分析提供了有效的手段.

Reliability analysis of neutron flux measurement system

The nuclear reactor core neutron flux measurement system is a special tool for the real-time and accurate measurement of the nuclear reactor neutron flux. Its reliability also has an important impact on the operation of the nuclear reactor. In this paper, according to the characteristics of neutron flux measurement system with multiple states, a method combining Markov model and go method is proposed. Firstly, the reliability of the neutron flux measurement system is analyzed and modeled by Markov state space method, and the probability of the system in each operating state is obtained. Then, the go diagram is constructed according to the system principle, and the reliability analysis of the neutron flux measurement system in multiple states is realized by go method. Finally, taking the neutron flux measurement system of a nuclear power plant as an example, the method is verified, which provides an effective means for the reliability analysis of the neutron flux measurement system.