堆外核仪表系统(RPN)的预设效验系数理论计算

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Calculation of Calibration Coefficient of Out-core RPN System

1. Institute of Applied Physics and Calculation Mathematics, Beijing, 100088, China;
2. Guangdong Nuclear Power Joint Venture Co. Ltd.,, Shenzhen, 518124, China;
3. Nuclear Power Institute of China, Chendu, 610041, China

摘要: 用蒙特卡罗方法及程序模拟给出了某核电厂堆内各组件(节块)对堆外探测器的响应矩阵。通过响应矩阵算出堆外探测器各节电流及堆外核仪表系统(RPN)刻度系数,进而得到堆芯热功率水平(P_r)及堆芯轴向功率偏差(ΔI)。通过不同循环、不同氙振荡理论计算与实验对比,表明数值模拟是可行的,计算结果完全满足精度要求。
- 蒙特卡罗方法 /
- 探测器 /
- 响应矩阵 /
- 功率偏差
Abstract: The response Matrix of assembly （or Node） to out-core chamber of a nuclear power plant is calculated by Monte Carlo Method （M.C.） and code. By means of which, the currents of each section of the chamber and the calibration coefficient are calculated. Therefore the theory in-core thermal power level P_r and axial offset ΔI are obtained. The theory results of different cycles and different Xe oscillation steps are compared the measured data. It shows that the numerical method is suitable for modeling out-core RPN system. The accuracy of calculation is sufficient for engineering precision.
- Monte Carlo method /
- Chamber /
- Response matrix /
- Axial offset