Neutronics Analysis for Core Assembly in Inverted Hydride-Fueled Pressurized Water Reactor
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摘要: 为得到物理性能较优的燃料栅元尺寸,利用蒙特卡罗(MCNP)程序对内冷式压水堆(IPWR)堆芯组件的中子学问题进行初步研究。通过计算不同可溶硼浓度下无限增殖系数(kinf)随轻重比(H/HM)的变化,确定组件燃料栅元的尺寸范围,通过分析比较不同燃料栅元尺寸下组件物理性能,得到物理性能方面较优的组件参数。结果表明,在H/HM为6.5,水棒直径(Dci)范围为9～11 mm时,组件具有较好的物理性能和固有安全性。
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关键词:
- 内冷式压水堆(IPWR) /
- 组件中子学 /
- 氢化物燃料
Abstract: In order to obtain the size of assembly cell with a better physical performance,a preliminary neutronics study was carried out for IPWR core using MCNP program.Firstly,the paper have studied how the keff changed with different H/HM（Hydrogen atoms/Heavy metal atoms） in different soluble boron concentration,and a size arrangement of assembly cell lattices is obtain.By comparing the physical performance of different size of assembly cell lattices,some assembly cell lattices which have a better physical performance are obtained.The result shows that:when the H/HM is 6.5 and water channel diameter ranges from 9 to 11mm,the assemblies have a better physical performance and an inherent safety. -
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