基于一步法的重反射层反应堆启动物理试验控制棒价值校核计算研究  

Check Calculation of Control Rod Worth for the Start up Physics Test in Reactor With Heavy Reflector Based on One-Step Method

作　　者：李志峰 李帆[2] 赵常有[1] 刘宙宇 朱宇翔[1] 许怀金 LI Zhifeng;LI Fan;ZHAO Changyou;LIU Zhouyu;ZHU Yuxiang;XU Huaijin(China Nuclear Power Technology Research Institute Co.,Ltd.,Shenzhen,Guangdong Province 518026,China;School of Nuclear Science and Technology,Xi’an Jiaotong University,Xi’an 710049,China)

机构地区：[1]中广核研究院有限公司,广东深圳518026 [2]西安交通大学核科学技术学院,西安710049

出　　处：《现代应用物理》2024年第1期88-91,共4页Modern Applied Physics

基　　金：国家重点研发计划资助项目(2022YFA1602000);广东省基础与应用基础研究基金资助项目(2022A1515011462)。

摘　　要：由于重反射层可减低中子泄漏从而提升中子经济性,因此某些大型先进压水堆采用重反射层减少临界尺寸来优化空间布局。由于重反射层与以往常用的围板水反射层差异较大,采用传统的两步法物理计算程序获得重反射层反应堆的精确中子学参数存在一定的难度,因此使用先进的一步法物理计算程序对重反射层反应堆启动物理试验控制棒价值展开了计算,计算结果表明,确定论一步法程序NECP-X计算结果与蒙特卡罗参考值吻合良好。Enhanced neutron economy is due to heavy reflector that reduce neutron leakage,so some large advanced pressurised water reactors(APWRs)use heavy reflectors to optimise the space layout by reducing the critical size.Due to the great difference between the heavy reflector and the commonly used shroud water reflector,it is difficult to obtain the accurate neutronics parameters of the reactor with heavy reflector by using the traditional two-step physical calculation code.Therefore,this paper uses the advanced deterministic one-step physical calculation code NECPX and Monte Carlo code to calculate the value of the control rod for the start-up physics test of heavy reflector reactor.The results show that the calculation result of deterministic one-step code NECP-X is in good agreement with the Monte Carlo reference value and measurement values.

关 键 词：一步法 NECP-X程序 重反射层 控制棒价值 

分 类 号：TL32[核科学技术—核技术及应用] TL423