气冷微堆燃料设计的中子学特性影响研究

TL424; 为分析气冷微堆燃料设计的中子学特性影响,基于方形燃料组件模型,利用蒙特卡罗程序RMC研究了TRISO颗粒、燃料芯块在燃料设计中的主要参量对组件中子学特性的影响.研究结果表明,燃料颗粒体积占比和包覆层厚度不变时,组件寿期随燃料核芯直径的增大先显著增大,而后趋于平稳;燃料颗粒体积占比和燃料核芯直径不变时,组件寿期随包覆层厚度的增大而减小;燃料装载量不变时,芯块直径增大,组件寿期显著增大,而芯块高度影响较小;无燃料区厚度的增加对组件中子学特性有明显的负面影响,基体材料密度、基体杂质硼当量对组件中子学特性的影响较小.研究结果将为后续气冷微堆包覆颗粒弥散燃料的设计优化提供指导....

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Published in原子能科学技术 Vol. 55; no. 11; pp. 2062 - 2069
Main Authors 张成龙, 刘国明, 贺楷, 朱思阳
Format Journal Article
LanguageChinese
Published 中国核电工程有限公司,北京 100840 20.11.2021
Subjects
气冷微堆;燃料设计;中子学特性
Online AccessGet full text
ISSN1000-6931
DOI10.7538/yzk.2021.youxian.0026

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Abstract TL424; 为分析气冷微堆燃料设计的中子学特性影响,基于方形燃料组件模型,利用蒙特卡罗程序RMC研究了TRISO颗粒、燃料芯块在燃料设计中的主要参量对组件中子学特性的影响.研究结果表明,燃料颗粒体积占比和包覆层厚度不变时,组件寿期随燃料核芯直径的增大先显著增大,而后趋于平稳;燃料颗粒体积占比和燃料核芯直径不变时,组件寿期随包覆层厚度的增大而减小;燃料装载量不变时,芯块直径增大,组件寿期显著增大,而芯块高度影响较小;无燃料区厚度的增加对组件中子学特性有明显的负面影响,基体材料密度、基体杂质硼当量对组件中子学特性的影响较小.研究结果将为后续气冷微堆包覆颗粒弥散燃料的设计优化提供指导.
AbstractList TL424; 为分析气冷微堆燃料设计的中子学特性影响,基于方形燃料组件模型,利用蒙特卡罗程序RMC研究了TRISO颗粒、燃料芯块在燃料设计中的主要参量对组件中子学特性的影响.研究结果表明,燃料颗粒体积占比和包覆层厚度不变时,组件寿期随燃料核芯直径的增大先显著增大,而后趋于平稳;燃料颗粒体积占比和燃料核芯直径不变时,组件寿期随包覆层厚度的增大而减小;燃料装载量不变时,芯块直径增大,组件寿期显著增大,而芯块高度影响较小;无燃料区厚度的增加对组件中子学特性有明显的负面影响,基体材料密度、基体杂质硼当量对组件中子学特性的影响较小.研究结果将为后续气冷微堆包覆颗粒弥散燃料的设计优化提供指导.
Author 张成龙
朱思阳
贺楷
刘国明
AuthorAffiliation 中国核电工程有限公司,北京 100840
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ZHANG Chenglong
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ZHU Siyang
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