ASME
ASME Section IX
Welding, Brazing and Fusing Qualifications
How welding procedures and welders are qualified. It defines the WPS as the instruction, the PQR as the test evidence supporting it, and the performance qualification covering the person. Essential variables are the heart of it: change one and the procedure must be requalified.
This is an explanation, not the standard. PipingInspector is not affiliated with ASME and reproduces no part of the document. Always work to the current edition of the standard itself and to your project specification.
Where it is applied on this site
- Welding processes, WPS and NDT — what happens before an arc is struckPiping
- Reading a WPS and a PQR — what is on the sheet and what the tests provedPiping
- Section IX essential variables — what invalidates a procedure qualificationPiping
- Welder qualification and continuity — the ranges a ticket covers, and the register nobody updatesPiping
- Joint preparation and fit-up — the hold point you only get oncePiping
- Preheat and post-weld heat treatment — hydrogen, hardness, and reading the chartPiping
- Non-conformance and corrective action — the four dispositions, and why NCRs repeatPiping
- From isometric to installed line — fabrication, erection and testingPiping