Welding - repairs to repairs
Welding - repairs to repairs
(OP)
Hi,
I have a carbon steel presure vessel with a 6"NB XXS nozzzle which is terminated in a pipe cap.
X-ray of the nozzle to pipecap weld found a defect in the weld which has been repaired.
However, x-ray of the repair has shown a defect in the repaired weld (albeit not as bad as the original defect).
Am I ok to repair the repair ?
Are there any restrictions concerning repairs of repairs, can I go on as many times as is needed until they get it right ?
Advice will be appreciated.
I have a carbon steel presure vessel with a 6"NB XXS nozzzle which is terminated in a pipe cap.
X-ray of the nozzle to pipecap weld found a defect in the weld which has been repaired.
However, x-ray of the repair has shown a defect in the repaired weld (albeit not as bad as the original defect).
Am I ok to repair the repair ?
Are there any restrictions concerning repairs of repairs, can I go on as many times as is needed until they get it right ?
Advice will be appreciated.





RE: Welding - repairs to repairs
RE: Welding - repairs to repairs
Regards,
Luis C.
RE: Welding - repairs to repairs
RE: Welding - repairs to repairs
Back to the ASME codes, and others for that matter, as metengr noted, the number of PWHT cycles is a essential variable and will need to be qualified. I have used and seen many client specification that state that WPS's need to be qualified with a minimum of 3 PWHT cycles.
RE: Welding - repairs to repairs
Cheers