堆芯段筒体快速断裂计算

Analysis for Fast Fracture of Cylinder Section Outside Reactor Core

本工作研究反应堆压力容器在60年寿期末是否会出现快速断裂。文章采用断裂力学分析方法计算寿期末堆芯段筒体的应力强度因子,其计算结果满足RCC-M规范的要求,即在寿期末堆芯段筒体不会发生快速断裂。

In this paper,the possibility of non-ductility fracture of the reactor vessel at the life end of 60 years was investigated.The fracture mechanic method was used to calculate the stress intensity factor of the reactor vessel at the life end.The calculation results satisfy the requirement of RCC-M,that is,at the life end,the reactor vessel will not occur non-ductility fracture.