PREQUALIFICATION OF WPS?

[Fizza453]

What is pre-qualification of WPS as covered in Chapter 3 of AWS D1.1?
Such pre-qualification is not discussed in ASME Section IX.

Nasir
Welding Engineer
DESCON ENGINEERING LIMITED
PAKISTAN

 

[gtaw]

Prequalified WPSs are WPS that do not need to be qualified by testing. As long as all the requirements of Clause 3 are met, the WPS need only be written before it is used for production.

ASME does not subscribe to the concept of prequalifications.



Best regards - Al

 

[qcrobert]

Although ASME does recognize the use of many AWS Standard Welding Procedure Specifications that only require a Demonstration Test.