WPS qualification

By zuhaibjokhio Date 10-31-2019 11:07

Dears

I have one quarry, I have qualified a WPS with 13mm plate thickness, Can i weld that wps with pipe having OD 30"Inch.

By Jim Hughes (***)

Date 10-31-2019 12:45

Depends on what code you qualified the PQ to. If we assume it's ASME Sec. IX then, yes you can weld that diameter.

By pipewelder_1999 (****)

Date 11-01-2019 20:32

Regardless of the code allowances, if the WPS indicates plate only, the it would have to be revised, a new one written, or a new one qualified.

In some codes, plate procedure qualification tests would qualify a WPS for pipe. But if that WOS indicated plate only, then you could not use that WPS for pipe until the WPS indicates so.