期刊论文

Control rod strategy for long-term small rod-controlled pressurized water reactors

中文

核技术

0253-3219

2024

47

3

123-132

10.11889/j.0253-3219.2024.hjs.47.030604

本校为第一机构

小型棒控压水堆舍弃了可溶硼,并高度依赖控制棒与可燃毒物棒控制堆芯的反应性.为研究控制棒对堆芯关键性能的影响,本文以核动力破冰船用KLT-40模型为对象,以轴向功率偏移、堆芯寿期、燃料利用率与径向功率峰因子为指标,开展长寿期小型棒控压水堆控制棒布置与动作策略设计分析.首先,基于OpenMC程序开发带棒燃耗程序;其次,比较堆芯带控制棒与无控制棒运行时的堆芯寿期等指标;最后,分析不同动作策略对轴向功率偏移等指标的影响.结果表明:控制棒将堆芯寿期从590 EFPDs(等效满功率天,Effective full power days)延长至650～698 EFPDs;低价值棒组优先动作策略使轴向功率偏移程度由-0.69与+0.80分别下降...

[Background]Small rod-controlled pressurized water reactors have foregone the use of soluble boron and heavily rely on control rods and burnable poison rods for reactor control.[Purpose]This study aims to explore the influence of control rods on the key performance metrics of a long-term small rod-controlled pressurized water reactor.[Methods]First,a KLT-40 reactor used for nuclear icebreakers was taken as research object,and a critical rod position-search burnup code was developed based on OpenMC.Then,the core lifetime and other indicators suc...