【摘要】 核电厂承压边界的健康状态直接影响机组运行的安全性和经济性。如在定期在役检查中发现了承压容器或管道的一定容许缺陷，对这些缺陷进行检测、跟踪和评估具有非常重要的意义。本文开展超声导波技术对承压边界中缺陷的定位算法研究及装置开发，进而完成了某核电厂的常规岛某管道焊缝容许缺陷检测的应用。研究表明该方法能够较为准确地对已有缺陷进行定位，现阶段作为在役检查的辅助手段，对在役承压容器的使用寿命及其继续运行的安全评估有非常重要的指导意义。更多还原

【Abstract】 The health of the pressure boundary of nuclear power plant operation affects the safety and economy of NPP directly. Pressure vessels and pipelines may have manufacturing defects such as pores, slag inclusion during manufacturing, or certain allowable defects are found in regular in-service inspection. It is of great significance to detect, track and evaluate these defects. In this paper, the localization algorithm and device development of defects in the pressure boundary by ultrasonic guided wave technology are studied and applied. As an auxiliary means of in-service inspection, this method has very important guiding significance for the pressure vessels and evaluation of their continuous operation.更多还原