【摘要】 文章涉及3×3-2可拆卸组件和相应热室检验装置的设计及热室内组件的远距离再组装和拆卸;组件检验及平均燃耗(以金属铀计,全文同)为30.9GW·d/t和6.5GW·d/t燃料棒的非破坏性检验和破坏性检验;室温和高温下的燃料棒检漏。主要结果是:可拆卸组件及相应热室检验装置的设计合理,热室内远距离操作可行;经堆内考验后组件结构完整,但格架辐照弹簧松弛量较大;燃料棒性能完好,环脊明显,棒径减小显著;采用多种方法检漏,未发现破损的燃料棒。更多还原

【Abstract】 The paper concernes in the features of re-fabrication and dismantling of the fuel assembly and the design of hot cell examination devices, as well as the non-destructive and destructive examinations of the fuel rods with the average burnup of 30. 9 GW · d/t and 6. 5 GW · d/t. Leakage tests of fuel rods were carried out at room temperature and high temperature, respectively. Results show that design of the dismountable fuel assembly and the hot cell examination facility is reasonable, remote operation is practical inside hot cell. Irradiated fuel assembly maintains structure integrity, but the spring of the grid presents relative strong relax. Performance of the fuel rods is nice, but the ridges and the reduction of fuel rods diameter are obvious. No failure fuel rod is discovered by different kinds of examination methods.更多还原