秦山重水堆CPPF因子的修正

随着机组的老化,秦山重水堆堆芯燃料冷却能力下降,需要定期对区域超功率保护(ROP)停堆整定值(TSP)进行完整分析,以确保反应堆运行安全。分析结果通过修正用于停堆系统ROP探测器校正的通道功率峰值因子(CPPF)进行应用,并实现对热工水力、压力管蠕变等参数的持续跟踪。本文重点分析CPPF的ROP相关参数修正方法,并通过1号机组实际运行数据,分析修正前后相关参数的对比,以及修正后对换料等机组运行产生的影响,最后总结可以采取的运行优化和应对措施。

Correction of CPPF Factor in QINSHAN CANDU Reactor

With the aging of the unit, the core fuel cooling performance of QINSHAN CANDU reactor decreases. To ensure the safe operation of the reactor, it needs to do regular analysis of ROP TSP. The analysis result is applied by correcting the CPPF which is used to calibrate ROP detectors to continuously track thermal hydraulic, pressure tube creep and other parameters. This paper focuses on the analysis of the ROP related parameters correction method for CPPF. Based on the actual operation data of unit 1, it analyzes the comparison of relevant parameters before and after correction, as well as the influence of operation such as refueling. Finally, it summarizes the operational optimization and countermeasure that can be taken.