摘要
M310型压水堆主回路系统设备蒸汽发生器水室分隔板由镍基合金制造而成,该种材料对一次侧应力腐蚀裂纹(PWSCC)有潜在的敏感性。为了对蒸汽发生器水室分隔板焊缝PWSCC显示进行针对性检查,确保一回路边界的完整性和可靠性以及减少检测人员的受辐照剂量,研发了一套远程控制蒸发器分隔板焊缝自动检查装置。该装置包括自动PT(渗透检测)、视频检查以及自动TOFD(超声波衍射时差法)三种检测技术。自动PT和视频检查用于发现显示并对显示进行长度测量,TOFD检测技术用于对显示进行深度测量。
The steam generator divider plate in PWR of M310 is made of nickel-based alloys.The study shows that nickel-based alloys could be possibly sensitive to PWSCC.Remote operated automatic inspection device and tools have been developed in order to inspect the PWSCC of the steam generator divider plate,aiming to ensure the integrity and reliability of the primary circuit and to minimize the radiation dose of the personnel performing the inspections.The inspection device consists of the auto liquid penetrant,the CCTV and TOFD.Auto liquid penetrant and CCTV techniques used to determine the length of the indications have been developed and qualified,and the TOFD inspection technique is used to determine the depth of the indications.
出处
《无损检测》
2018年第2期69-72,共4页
Nondestructive Testing
