Why would 1 x repair require a retest.
That is ridiculous.
You do nothing but post negative comments.
If there was a BLOCK button I would be using it right now.
metaleng123,
This is a question for your client.
Submit a repair request to them.
If this was discovered after PWHT it would be a different story but a localised repair (20 mm) prior to PWHT should be no problem.
What is the fabrication / construction code ?
r6155,
Stop being so bloody critical all the time.
You do nothing on this forum but criticise.
"It is very difficult for me to explain the test results to Client." - do you with all your wisdom have an explanation to offer the Client ?
karik87 does not need to be qualified or to take a Welding...
No interpretation required.
The scenario that is commonly used world-wide is your example Pipe 01 GTAW but your Pipe 02 will be GTAW/SMAW and this covers the majority of welds the welder is likely to encounter on that particular project.
Unless there is a particularly stringent requirement you...
As noted it is not a code requirement but strongly recommend you include the MTR with your PQR.
I do not know any Clients or Clients Representatives (myself included) who will accept a PQR without confirmation of the mechanical and chemical properties of the test coupon.
On re-reading your post...
As noted more info would be helpful.
FB 50 could possibly be Flat Bar 50 mm width but without more info - ???
OX 520 is shown on Google as being equivalent to S355 J2 so that may help.
What is the reason you are investigating ? Replacement, Repair ????
If you are asking about insertion depth of pipe into a socket weld flange what is your construction / fabrication code ?
You will not find what you are looking for in B16.5
There is no issue with what you propose.
However, consider what I noted previously.
If you are getting root repairs on welds visually accessible internally then what about the rest of the welds in that "lot" ?
If it is 100% NDT then no problem.
If it is 5%, 10%, 20% and you have radiographed...
If you can access to reweld it is obvious you can visually examine.
What about all the joints without visual access or no NDT ?
Suggest an investigation of welder / s responsible would be a good idea.
Let us forget about the ASME requirements and look at the original question (as noted by GTAW)
" Can anyone share their experience on how to prevent this defect or provide recommendations for training the welders?"
GMAW is probably the worst process chosen for your application and Short Circuit...
As R6155 stated if the test plate has defects what do you do about the vessel weld ?
Seems a very weird scenario.
If you were doing test plates as run off plates it is common sense that the whole plate must be code compliant (NDT) before performing mechanical tests.
Not ignoring the defective...
