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对百万千瓦级参考核电站长燃耗堆芯(18个月换料)采用的可燃毒物(钆)含量与堆芯燃料管理主要结果进行了分析研究。该研究采用先进的燃料管理程序系统,对不同可燃毒物含量和不同可燃毒物棒根数的燃料组件进行了计算,给出了组件无限增殖因子(kinf)随燃耗的变化关系,据此对参考堆芯采用相同的装载进行了4种方案燃料管理计算。计算结果表明,对于堆芯燃料管理,采用低可燃毒物含量、含可燃毒物棒数多的装载方案明显优于高可燃毒物含量、含可燃毒物棒少的堆芯装载方案。
The main contents of combustible poisons (gadolinium) and core fuel management used in the fuel burn cores (18-month refueling) of a one-million-kilowatt reference nuclear power station were analyzed. In this study, an advanced fuel management program system was used to calculate the fuel assemblies with different flammable toxins and different numbers of flammable toxins. The relationship between kinf and fuel consumption was given. Based on this, The core uses the same loading for four scenarios of fuel management calculations. The calculation results show that for the core fuel management, the loading scheme with low combustible poison content and more stick with combustible poisoning is obviously better than the high combustible poison content, and the core loading scheme with less flammable poison stick.