基于Bamboo-C软件的压水堆核电厂次临界刻棒方法研究及验证  

Research and Verification of Subcritical Rod Worth Measurement Method for PWRs Based on Bamboo-C Code

作　　者：李载鹏[1] 白家赫 万承辉 房何 潘泽飞 吴宏春[2] Li Zaipeng;Bai Jiahe;Wan Chenghui;Fang He;Pan Zefei;Wu Hongchun(Jiangsu Nuclear Power Co.,Ltd.,Lianyungang,Jiangsu,222042,China;School of Nuclear Science and Technology,Xi’an Jiaotong University,Xi’an,710049,China)

机构地区：[1]江苏核电有限公司,江苏连云港222042 [2]西安交通大学核科学与技术学院,西安710049

出　　处：《核动力工程》2024年第6期22-29,共8页Nuclear Power Engineering

基　　金：国家重点研发计划(2022YFB1902600)。

摘　　要：控制棒价值测量是核电厂核设计验证的重要内容,传统上普遍需要在零功率物理试验中单独设置一段时间,通过硼测法、换棒法或动态刻棒方法实现控制棒价值测量,导致零功率物理试验时间较长,经济性较低。因此,本文提出了三维中子源增殖方法,基于提棒达临界过程中源量程探测器的实测数据以及Bamboo-C软件的三维堆芯数值模拟,实现次临界反应性的测量,进而获得控制棒价值。整个过程直接依赖于现有的提棒达临界规程,具有优异的工程应用能力,能够显著提高核电厂的经济性。采用田湾核电站M310机组某个循环提棒达临界过程的实测数据对本文提出的方法进行验证,验证结果表明,绝大部分的控制棒价值测量值均能够满足±10%的工程验证准则,验证效果较好,证明本文提出的方法具有工程应用的研究价值。The measurement of control rod worth is very important for the validation of nuclear design.Conventionally,the control rod worth measurement is carried out through the boron-dilution method,the rod-swap method,or the dynamic rod worth measurement method.These conventional methods lead to the fact that the zero power physics test occupies too long time.Therefore,this paper proposes the three-dimensional neutron source multiplication method.This method can achieve the measurement of subcriticality as well as control rod worth based on the measured source-range detector signals during the rod withdrawal process and the simulation results by Bamboo-C code.The whole flowchart relies on the current procedure of rod withdrawal process.This method has excellent engineering application ability and can significantly improve the economy of nuclear power plants.The measurement data during the rod withdrawal process in the M310-type reactor of Tianwan NPP is adopted for the verification of the proposed method.Most measured results of control rod worth can meet the engineering acceptance criteria(±10%),which proves that the method proposed in this paper has research value in engineering application.

关 键 词：次临界刻棒 三维中子源增殖方法 源量程探测器 提棒达临界 控制棒价值 

分 类 号：TL329[核科学技术—核技术及应用]