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首页> 外文期刊>Annals of nuclear energy >Investigation of burnable poisons effects in reactor core design
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Investigation of burnable poisons effects in reactor core design

机译：反应堆堆芯设计中可燃毒物影响的研究

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Burnable absorber rods (BAR) and chemical shim are the main control poisons that are used in the core for improving the reactor behavior and satisfying the safety criteria during the core life time. These poisons have several constraints, criteria, advantages and also disadvantages from the safety and operation points of view; and these characteristics depend on the concentration and distribution of mentioned poisons in the reactor core. Therefore, understanding their effects on the reactor core behavior, especially the mutual interaction between them, is a crucial issue in reactor core design procedure. In this study, the influences of the burnable poisons on the main parameters of the reactor such as multiplication factor, burnup, soluble poison concentration, moderator temperature coefficient and power peaking factor over the reactor life time are investigated. The WER-1000 reactor was selected for this investigation. The reactor core was modeled by WIMS and CITATION codes. Several different loading patterns based on different distributions and concentrations of BARs were defined. Subsequently, the main parameters of the core for each pattern were calculated by the core model and were investigated to analyze the effects of BAR concentration and distribution on the reactor behavior. The presented results made it possible to analyze and understand the BAR and chemical shims effects on the behavior of the nuclear reactor core.
机译：可燃吸收棒（BAR）和化学填隙片是堆芯中使用的主要控制毒物，可用于改善堆芯寿命期间的反应堆性能并满足安全标准。从安全和操作的角度来看，这些毒药具有若干限制，标准，优点和缺点。这些特征取决于反应堆堆芯中所述毒物的浓度和分布。因此，了解它们对反应堆堆芯性能的影响，尤其是它们之间的相互影响，是反应堆堆芯设计程序中的关键问题。在这项研究中，研究了可燃毒物对反应堆主要参数的影响，例如乘数，燃耗，可溶毒物浓度，调节剂温度系数和功率峰值因数在反应堆寿命中的影响。选择WER-1000反应堆进行这项研究。反应堆堆芯由WIMS和CITATION代码建模。根据BAR的不同分布和浓度，定义了几种不同的加载方式。随后，通过堆芯模型计算了每种模式堆芯的主要参数，并对其进行了研究，以分析BAR浓度和分布对反应堆行为的影响。提出的结果使得有可能分析和了解BAR和化学填隙片对核反应堆堆芯性能的影响。

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