Code of Construction

[sftyvlv1]

I have been reminded by my AI that when developing PQR's and WPS's that I need the pertaining code of construction to which the WPS/PQR are to be made.
I am curious, how are shop WPS/PQR's made and then applied to vessels and piping when each code has it's own rules?
Can these WPS/PQR's be used for both?
As usual I'm missing something here.
Dave

 

[david339933]

There is no requirement for the Code of Construction. You need to certify the PQR was prepared, welded and tested to Sec IX.
The Sample WPS/PQR in Section IX has no reference to Code of Construction.

Now that being said, is it a good idea? Sure. There are differences in the Codes that may require different WPSs. Especially impact testing requirements of various Codes.

 

[sftyvlv1]

thanks again David.

 

[weldstan]

While ASME I, III, VIII, B31.1, B31.3, etc. reference ASME IX, ASME IX does not reference any of them. The aforementioned Codes provide additional requirements involving PWHT, preheating, impact testing and other welding requirements/restrictions.

 

[XL83NL]

That being said, a WPS/PQR qualified to ASME IX (not certified to ASME IX, read the foreword) and used under VIII-1 may not be valid for certain B31.3 work when B31.3 sets additional requirements by means of essential variables that weren’t qualified previously.

 

[david339933]

If you don't certify that the PQR was prepared, welded and tested to Sec. IX, the PQR is invalid.

See QW-200.2(b) - "The PQR shall be certified accurate by the organization. The organization may not subcontract the certification function. This certification is intended to be the organization's verification that the information in the PQR is a true record of the variables that were used during the welding of the test coupon and that the resulting tensile, bend, or macro test results are in compliance with Sec IX."

FORM QW-483 - Sample PQR
"We certify that the statements in this record are correct and that the test welds were prepared, welded and tested in accordance with the requirements of Sec. IX of the ASME Boiler and Pressure Vessel Code."

 

[XL83NL]

You, as a person, or organization can certify anything. That's what the code says and wants. My point was that ASME itself doesnt certify anything, and that shouldnt be mistaken.
The following can be found in most (if not all) ASME standards:

 

[sftyvlv1]

Thanks Gentlemen.