核电厂一回路主管道铸造奥氏体不锈钢热老化管理现状与展望  

Management Status and Outlook on Thermal Aging of Cast Austenitic Stainless Steels Used in Primary Coolant Pipes of Nuclear Power Plant

作　　者：杨广宇 史芳杰[1,2] 石鹏 万璟 李乾武 Yang Guangyu;Shi Fangjie;Shi Peng;Wan Jing;Li Qianwu(Suzhou Nuclear Power Research Institute,Suzhou 215004,China;National Nuclear Power Plant Safety and Reliability Engineering Technology Research Center,Suzhou 215004,China)

机构地区：[1]苏州热工研究院有限公司,苏州215004 [2]国家核电厂安全及可靠性工程技术研究中心,苏州215004

出　　处：《核安全》2024年第4期43-47,共5页Nuclear Safety

基　　金：国家重点研发计划:核电站重要设备部件先进智能老化监检测技术开发与验证,项目编号:2020YFB1901500。

摘　　要：在核电厂老化管理中,一回路主管道铸造奥氏体不锈钢母材与焊缝的结构完整性对于核电厂的安全运行至关重要。主管道在运行工况下面临热老化问题,需要采取有效的管理手段。本文综合介绍了目前主管道热老化问题的国际及国内工程管理现状,总结了主管道在实际管理过程中的难点与不足,结合无损检测手段和研究现状,提出了未来的关注方向。通过对母材和焊缝的热老化评估与检查实现有效管理,为核电厂主管道的安全服役提供有力支撑。For the aging management of nuclear power plants,the structural integrity of the cast austenitic stainless steel base metal and welds of the primary coolant pipes is essential to the safe operation.The primary pipes face the problem of thermal aging after long-time operation,which requires effective management methods.This article comprehensively introduces the international and domestic engineering management status of the primary pipes for thermal aging.The difficulties and shortcomings in the actual management process of the pipes are summarized.Combining non-destructive testing methods and research status,the future direction is proposed.Effective management is achieved through thermal aging assessment and inspection for base materials and welds,which provides strong support for the safe service of primary pipes.

关 键 词：铸造奥氏体不锈钢 主管道母材 焊缝 老化管理 

分 类 号：TL351.6[核科学技术—核技术及应用]