原子能科学技术2018，Vol.52Issue(2)：295-301,7.DOI:10.7538/yzk.2018.52.02.0295
压水堆燃料包壳锆同位素共振计算研究
Study on Resonance Self-shielding Calculation for Zirconium Isotope in PWR Fuel Cladding
张宏博 1汤春桃 1杨伟焱 1杨波1
作者信息
- 1. 上海核工程研究设计院,上海 200233
- 折叠
摘要
Abstract
Zirconium alloys are widely used in PWR fuel assembly manufacture because of their corrosion resistance,mechanical strength,and neutronics characteristics.How-ever,zirconium isotopes have resonances in the medium energy range,which are often ignored or treated by a typical background cross section in conventional equivalence theory calculations.These may cause reactivity deviation even up to 200-300 pcm.In this paper,the factors which impact the effective cross section for zirconium isotope resonance in PWR fuel cladding were analyzed,and a method based on the cross section pre-tabulation strategy was studied.The numerical results demonstrate that the proposed method provides accurate zirconium isotope cross sections and improves kinf results.Moreover,the applicability of the method in the resonance calculation of disper-sion fuel zirconium base was preliminarily discussed as well.关键词
锆同位素/燃料包壳/共振计算/等价理论/组件计算/弥散型燃料Key words
zirconium isotope/fuel cladding/resonance self-shielding calculation/equivalence theory/lattice calculation/dispersion fuel分类
能源科技引用本文复制引用
张宏博,汤春桃,杨伟焱,杨波..压水堆燃料包壳锆同位素共振计算研究[J].原子能科学技术,2018,52(2):295-301,7.
