线性趋势外推法测算核电厂辐射基准点中子剂量率

Linear Trend Extrapolation Calculates Neutron Dose Rate of Radiation Datum Point in Nuclear Power Plant

基于压水堆核电厂核功率与堆芯平均热中子注量率成正比的物理原理,提出线性趋势外推测算辐射基准点中子剂量率的方法,给出了外推原则。用线性趋势外推法分析了两座CPR1000核电厂部分高中子剂量率辐射基准点历史数据,该方法外推数据可靠性优于历史外推数据,且可用于检查实测数据的可靠性。对某三代技术路线压水堆核电厂辐射基准点中子剂量率外推方法进行了简要分析。

Based on the physical theory that nuclear power is direct proportion to the core average thermal neutron flux in PWR nuclear power plant,a method that the linear trend extrapolation applied to calculate neutron dose rate of radiation datum point,and provide the extrapolation principle was put forward.Applied this method to analyze some radiation datum points＇ history data with high neutron dose rate of the two CPR1000 nuclear power plants,drawn the conclusion that the reliability of the data got from this method is better than the history extrapolation data,and this method can be used to check the reliability of the measured data. A brief analysis of the radiation datum point＇s neutron dose rate extrapolation method of a third generation technology route PWR nuclear power plant is carried out.