燃料组件修复系统设计与验证

Design and Verification of Fuel Assembly Repair System

为充分利用辐照后燃料组件,结合其密集型和重量轻的特点,提出了一种燃料组件的修复工艺,设计了一套辐照后燃料组件修复系统,对关键零部件进行了详细设计并采用ANSYS软件进行抗震校核。结果表明,燃料组件修复系统主体框架应力和变形均满足要求;通过工程试验样机验证,辐照后燃料组件修复系统能够安全可靠地实现具有密集型棒束特点的燃料组件的拆卸和复装作业,为辐照后燃料组件再次入堆创造了条件。

In order to make full use of the post-irradiation fuel assembly,a fuel assembly repair process was proposed,and a repair system for post-irradiation fuel assembly was designed based on the dense and lightweight characteristics of the fuel assembly.Main parts were designed in detail and checked by seismic analysis using ANSYS.The results show that the stress and deformation of the main frame of the fuel assembly repair system meet the requirements.It is verified by the engineering test prototype that the system could dismantle and assemble the post-irradiation fuel assembly safely and reliably,and created conditions for the return of the fuel assembly.