TECHNICAL INSTRUCTION FOR WELDING REPARATION

焊缝返修工艺指导

Indications detected by visual or magnetic inspection

目视或者MT识别缺陷

If the indication is shallow, identify the indication area and grind it superficially. A QC technician must check if the indication is completely removed by the same method use to found it.

如果是简单的表面缺陷，将缺陷区域标出做轻微打磨处理，QC检验员必须进行目视检查确保缺陷已经清除。

If after the first grind the indication is still present, it must be recorded and reported.

如果经过初次打磨后缺陷仍然存在，就必须做好记录并报告

After report, digging the indication until a QC technician verify the ground area by visual and magnetic test and report the indication was completely removed.

报告后，继续清除缺陷，并经过目视和MT检查，确保缺陷已经完全清除后，QC质检员必须做好记录。

After a satisfactory inspection, recovery by welding as per applicable WPS.

经过充分检查后，按照返修工艺文件和适用的WPS进行返修。

The repaired weld must be re-checked as per quality request.

返修后的焊缝必须按照质量要求进行二次检查。

Indication detected by ultrasonic examination

用UT进行缺陷识别

All the indications detected by ultrasonic testing must be recorded and reported.

所有UT检验识别的缺陷都应记录和报告。

After area’s identification, digging by grind, machining or carbon arc gouging to remove the indication length plus 50 mm per side. The area must be cleaned and QC technician verify the complete indication removal by visual and magnetic inspection.

在标定缺陷位置后，可以用打磨，机加工或者碳弧气爆的方式去除缺陷，清除区域应在缺陷长度两端各延长50mm, 缺陷必须完全清除并经过质检人员通过目视和MT的方式确认。

After a satisfactory inspection, recovery by welding as per applicable WPS.

经过充分检查后，按照返修工艺文件和适用的WPS进行返修。

The repaired weld must be re-checked as per quality request.

返修后的焊缝必须按照质量要求进行二次检查

It is mandatory to report all Visual Inspections as well all NDT done, and keep it as a record on final QC Book.

必须提交焊缝外观检查报告，这是个强制性的要求，而且必须放在最终文件里