welder performance qualification as per ASME SECTION IX

[qalab]

As per earlier code, when welder was qualified on 3/4" and above,base metal thickness qualified was max. to be welded. Now as per latest code ,if welder welds 1/2" and above, qualification range is maximum to be welded.

if we have qualified welder on 16 mm thick plate before the new code came in force,the thickness limit qualified was 32mm .Can we apply new code thickness limits and modify WPQ to allow welder to weld on maximum thickness.

 

[metengr]

If a welder has an original QW 484 Form indicating 1/2" actual weld metal deposited thickness for a process (in lieu of the 3/4" weld deposit as in the earlier version of the Code) which means a deposit thickness qualified to 1", you cannot go back and modify the original record to reflect the lowered thickness range for maximum weld deposit thickness qualification.

I would fill out a new QW 484A Form (transferring the weld process data from the original QW 484 Form) indicating the change to maximum weld metal deposit thickness on the new QW 484 A Form. Attach both forms together, and retain as a complete record.

 

[VeryPicky]

galab

I support metengr. A practical way is to issue a new revision of WPQ with clear identification of the rev number and rev subject, and revision reason.

I don't know how big your organization is and how many WPS you have. I take this change is not paralelled in WPS/PQR situation. Be cautios wrt the WPS qualification range.

BTW: I haven't seen that change in the Code since I am still anxiously awaiting for that baby to arrive. So, I am answering using information provided and common sense.
Doesn't the Code provide any guidance on how to handle that situation? I am expecting to see a lot of changes to the WPQs trigered by that.

 

[GenB]

You can perfectly fill out and certify a new PQR based on the original lab test since you are not falsifying any records.

fill out and certify as many WPS's as you need.
I would issue new WPS's instead of revising.
You have to upgrade your drawings anyways.

The Code will never tell you how is done, you have to consult your AI to get the final approval, but he can not refuse it.
Regards,
ER

 

[VeryPicky]

To clarify any confusion: the question was about performance not welder qualification. WPQ stands for Welder Performance Qualification (Test).

Putting Human Factor Back in Engineering

 

[VeryPicky]

Sorry, my mistake, my previous statement should have read
"welder performance not welding procedure".
Apologies for any confusion caused.

Putting Human Factor Back in Engineering