反应堆冷却剂流量测量不确定性分析研究  

Study on the Measurement Uncertainty Analysis of Reactor Coolant Flowrate

作　　者：朱建敏 胡友森 李昌莹 张薇 ZHU Jianmin;HU Yousen;LI Changying;ZHANG Wei(China Nuclear Power Technology Research Institute,Shenzhen of Guangdong Prov.518000,China)

机构地区：[1]中广核研究院有限公司,广东深圳518000

出　　处：《核科学与工程》2023年第1期35-41,共7页Nuclear Science and Engineering

摘　　要：反应堆冷却剂流量是压水堆核电厂设计和运行重点关注的热工安全参数及运行监测参数之一。论文介绍了弯管流量计法和热平衡法两种测量CPR1000核电机组反应堆冷却剂流量的数学物理模型,根据不确定性分析数学原理分别建立了两种方法的完整反应堆冷却剂流量不确定性分析模型,结合CPR1000核电机组数据对反应堆冷却剂流量的不确定性进行了对比分析及敏感性研究。本文模型可用于反应堆冷却剂流量测量不确定性的量化评估,还可用于确定影响反应堆冷却剂流量测量不确定性的关键因素以及优化流量测量系统设计。The reactor coolant flowrate is one of the key safety parameter in the operation and design of PWR nuclear power plant.The mathematical principle of the elbow flowmeter and the heat balance method of CPR1000 reactor coolant flowrate measurement is introduced in this paper,and a systematic uncertainty analysis model of reactor coolant flowrate measurement is developed based on uncertainty analysis principle.The sensitivity study of reactor coolant flowrate uncertainty is carried out combined with the CPR1000 data.The uncertainty analysis model proposed in this paper can be used to quantitaively assess the uncertainty of reactor coolant flowrate measurement,and can be also used to obtain the major effect factors and design optimization of the uncertainty of reactor coolant flowrate measurement.

关 键 词：反应堆冷却剂流量 不确定性 弯管流量计 热平衡 

分 类 号：TL341[核科学技术—核技术及应用]