关于管道无损探伤问题? 我们这边是这样要求的: 1.割前作ut 2.焊后由承包商和管理公司的质检员做外观检查 3.100%rt 4.100%硬度测试(如果材料要求或热处理) 原文:tie- ins which will be hydro tested shall be examined as following: - ut before cutting - mt/pt (only if required) - 100% fit- up inspection by construction contractor qc and site qc - 100% vt (visual inspection) - 100 % leak tested on reinforcement pad (if applicable) - rt, mt/ pt as per line nde requirements - 100% hardness test (if required by material or heat treated).查看更多