本报告基于前期国内外耐事故燃料（简称ATF）进展调研、国内外已有工作调研及中子学分析，通过基于Copernic 燃料棒性能计算分析程序进行二次开发，以传统燃料元件几何与边界条件为初步设计提供参考，在此基础上根据新型燃料元件材料特性而修改几何参数，提出较为合理的燃料元件概念设计，为专题1、2 和3 的相关工作提供支撑。

This report is based on the preliminary investigation of the progress of domestic and foreign accident resistant fuel (ATF), the investigation of existing work at home and abroad and the analysis of neutrons. Through the secondary development of the fuel rod performance calculation and analysis program based on Copernic, the traditional fuel element geometry and boundary conditions provide a reference for the preliminary design. On this basis, the geometric parameters are modified according to the material characteristics of the new fuel elements, and a more reasonable conceptual design of fuel elements is proposed, which provides support for the related work of topics 1, 2 and 3.