In BWR fuel assembly design, the axial enrichments require repeated adjustment for the optimization of the design. Every time the axial enrichments change, a lot of effort has to be spent to perform lattice calculations for generating a new cross section data library. The inconvenient situation can be circumvented by using scoping libraries that enable the two-group constants interpolation functionality for various enrichments of a fuel segment. Before the application of scoping libraries on BWR fuel assembly designs, several aspects of the applicability need to be examined. In this study, we examined the linearity of macroscopic group constants, errors in power peaking related parameters and core analysis results when scoping libraries were applied. The results showed the applicability of scoping libraries on fuel assembly designs when the fuel segment enrichments for generating a scoping library have an enrichment interval of less than 0.4%.

在BWR燃料组件设计中，轴向浓缩需要重复调​​整以优化设计。每次轴向富集发生变化时，都必须花费大量精力来执行晶格计算以生成新的横截面数据库。通过使用范围库可以避免不方便的情况，该范围库启用两组常数内插功能以实现燃料段的各种浓缩。在将范围界定库应用于BWR燃料组件设计之前，需要检查其适用性的几个方面。在这项研究中，我们研究了应用范围域库时宏观组常数的线性，功率峰值相关参数的误差以及核心分析结果。