welder qualifications when two methods are used
welder qualifications when two methods are used
(OP)
I am bidding on a pipe job which requires our welders to use GTAW as a root and FCAW as a cover. How should I qualify our welders.
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RE: welder qualifications when two methods are used
RE: welder qualifications when two methods are used
1. Qualify a new weld procedure with destructive testing and test welders to the new procedure.
2. Create a new weld precedure (paperwork) using two existing qualified (either prequalified or by destructive testing) weld procedures and select a welder from your company who is qualified to both of those procedures in the necessary positions.
RE: welder qualifications when two methods are used
RE: welder qualifications when two methods are used
Best regards - Al
RE: welder qualifications when two methods are used
RE: welder qualifications when two methods are used
You must also comply with the requirements of the applicable construction code (B31.1, B31.3, Section I, Section VIII, etc.)and you must have a WPS that covers the work being performed. If the F number is affected, you may not be covered, i.e., a change from F4 to F5 for instance or vice versa.
If a change in employers is involved, all bets are off.
Best regards - Al
RE: welder qualifications when two methods are used
You can also by Section IX, combine two different PQRs into one WPS as long as the GTAW root process is used, and the FCAW process is used in the other as long as all the essential, non-essential, and supplimentary essential variables are within the scope of combining them per ASME Section IX QW-200.4.
Hope this helps,
RE: welder qualifications when two methods are used
RE: welder qualifications when two methods are used
Double check the applicable ASME pressure piping code to verify downhill progression is permitted or to verify the WPS does not have to be qualified with the position and progression to be used in production.
Never forget what the letters "ASME" stand for; A - always, S- sometimes, M - maybe, E - except. The specific conditions, limitations, and exceptions are often addressed by the applicable construction code.
Best regards - Al