反应堆压力容器水位测量不确定度评定研究

Research on the Uncertainty Evaluation of Reactor Pressure Vessel Water Level Measurement

摘要: 压力容器水位是核电厂设计和运行关注的重点参数之一，本文利用标准不确定度评定方法，结合CPR1000核电厂RPVL测量方法及相关数据，建立了压力容器水位测量不确定度评定模型，为压力容器水位测量不确定度评定提出了具体的方法。为今后核电厂压力容器水位设计和运行，以及进行性能改进提供了理论依据和指导方向。

Abstract: Pressure vessel water level is one of the key parameters in nuclear power plant design and opera-tion. This paper researched on general uncertainty analysis model of pressure vessel water level measurement, based on the standard uncertainty analysis method. And the CPR1000 nuclear power plant RPVL measurement system and data were used to elaborate the specific uncertainty analysis method of water level measurement. This uncertainty analysis method could be retained as reference and guidance to pressure vessel water level measurement design, maintenance and performance improvement.