Procedure qualification vs Welder qualification

[waqasmalik]

Hi all, i am having hard time in understanding this that what should be qualified first and why? procedure qualification or welder qualification?

Thanx in advance

 

[BigInch]

The welder must qualify to a specific a procedure.
With a good welder, both could conceivably be accomplished simultaneously.

 

[EngrRodri]

Procedure is documents needed by welder prior to weld. to obtain it , must first have procedure qualification.
after having procedure passed, then comes along with welder qualification. same routine. once it passed then you can proceed for production

 

[BigInch]

That's the old Chicken or Egg problem?

 

[SectionIX]

Or the chicken and the egg...

ASME Section IX QW 301.2

The welder or welding operator who prepares the WPS
qualification test coupons meeting the requirements of
QW-200 is also qualified within the limits of the performance
qualifications, listed in QW-304 for welders and
in QW-305 for welding operators. He is qualified only
within the limits for positions specified in QW-303.