GTAW For weld repair of GTAW/SMAW Welded pipe butt weld jt

By Aanish Date 03-09-2021 09:43

Hi, I want to know if it is allowed to repair a butt welded joint initially welded by GTAW/SMAW process using GTAW process. Near surface porosity was observed during RT, the porosity is to be removed by grinding and is planned to weld back the particular area by GTAW.

By Lawrence (*****)

Date 03-09-2021 14:57

How can you possibly expect an accurate answer when nobody knows the governing specification, the base metal, or intended service of service of the weldment?

By 803056

Date 03-09-2021 15:54

Details my good man, we need details.

What does your WPS say on the subject?

What, no WPS? Good Lord, what are we going to do?

Al

By Jim Hughes (***)

Date 03-15-2021 11:24

Aanish,
What code of construction are you welding to? If you have a qualified welding procedure, then to what code was it qualified? It helps if you have that information along with client requirement. (if any) Some client specifications are specific about weld repairs. But in general, if you have a GTAW/SMAW qualified welding procedure to ASME Sec. IX, then yes you would be able to repair the weld using either of those welding processes.