Welder Qualified ASME IX

Date 07-08-2008 23:33

QW452.1 Cover THICKNESS OF WELD METAL QUALIFIED.
But I understand only maximum.
My question is: What is minimum Thickness Qualified?,
for example 1 in. is usually in test with groove, en WPQ only point 2 in as maximum and the minimum thinkness.

Thank you for you aswer

Dayanara

By swsweld (****)

Date 07-09-2008 04:11

QW-451.1 and QW-451.2 give the range of thickness for groove weld tension and bend tests.

This is for procedure qualification thickness limits.

By 803056

Date 07-09-2008 15:45

Under ASME Section IX, there is no minimum thickness for welder qualification.

Best regards - Al

By 3.1 Inspector Date 07-09-2008 19:54

Are you qualifying a procedure or a welder?

By DAYANARA (**)

Date 07-09-2008 23:43

I have qualified a welder perfomance.
But I thing all welder is qualified for 1 WPS.
Thanks
Dayanara

By romelrivera Date 07-11-2008 03:14

If you are qualifying a welder on 1" pipe and thickness of the pipe is less than 13mm, then the welder is qualified a maximum of 2t, where t is the thickness of the pipe. no minimum thickness...

By pipewelder_1999 (****)

Date 07-11-2008 18:30

The welder MAYA be qualified for more than 1 WPS. It just depends upon the range the welder is qualified AND the range that the WPS is used for production.

A welder may be qualifiied to work within the range of a WPS but may not be able to work within the entire range. The term "Qualified for a WPS" can be misleading. A welder may be qualified for ranges that a WPS's does not yet exist for in the company. Or he may use a WPS but not be qualified for the entire range.

If trhat was not what you were referring to, forgive me.

Gerald Austin
Iuka, Ms