Forum Technical Discussions      Re: Repair after Heat Treatment Posted by: Nigel Armstrong (PID_728), E-mail: Address, on November 26, 2008 at 16:10 : In Reply to: Re: Repair after Heat Treatment posted by : Afshin , E-mail: Address, on November 26, 2008 at 15:35 : Good point, Afshin. And if PWHT IS required after weld repair, then the final acceptance NDE should be after that post-repair HT. But if the manufacturer decides to omit this process on the basis of his/her interpretation of the Code, then its for the Authorised Inspector or the Owner's representative agree or not and either to allow this or to inform the manufacturer that the product will not clear final acceptance unless the post-repair HT is performed. Resolution of any conflicting opinions will decide if the NDE technician is called back to repeat the inspection or not. The NDE technician's responsibility is to perform the test according to procedure and produce detailed factual reports including scope, time (stage) and outcome of test. Establishing or arguing one way or the other about the Code requirements for heat treatment are outside the scope of his/her responsibility. Cheers Nigel ----------- Start Original Message ----------- : No ,you can refer to mentioned ASME code add.and note to reqirements of welding after PWHT. : : The main reason PWHT is done is to relieve stress due to welding. Obviously, if you have to repair a component (by welding) that was specified to be PWHT, you need to carry out PWHT. : : : Dear Friend, : : : For necessary or no to again PWHT after repaired area which have been PWHT,you can refer to ASME-Sec.VIII-Div.1-UCS-56 if your design code is ASME. : : : : Hellooo alll...... Iam facing a problem right now please help me to sort it out.... i did a carbon steel vessel TOFD with 72mm thickness. after heat treatment we found a repair on one joint ( they forgot to attend the repair first time) with 100 mm length and 26mm depth with 5 mm size. After the repair scanning manufacture telling us to submit a report with out Repair indication. And they are saying up to 35mm it’s not required to Heat treat again. Please let me know if manufacture is right or not.. : : : : Thanks in advance : : : : Cheers ------------ End Original Message ------------ Follow Ups: Post a Followup: Name: E-Mail: Subject: Comments: ----------- Start Original Message ----------- : Good point, Afshin. And if PWHT IS required after weld repair, then the final acceptance NDE should be after that post-repair HT. But if the manufacturer decides to omit this process on the basis of his/her interpretation of the Code, then its for the Authorised Inspector or the Owner's representative agree or not and either to allow this or to inform the manufacturer that the product will not clear final acceptance unless the post-repair HT is performed. Resolution of any conflicting opinions will decide if the NDE technician is called back to repeat the inspection or not. : The NDE technician's responsibility is to perform the test according to procedure and produce detailed factual reports including scope, time (stage) and outcome of test. Establishing or arguing one way or the other about the Code requirements for heat treatment are outside the scope of his/her responsibility. : Cheers : Nigel : : No ,you can refer to mentioned ASME code add.and note to reqirements of welding after PWHT. : : : The main reason PWHT is done is to relieve stress due to welding. Obviously, if you have to repair a component (by welding) that was specified to be PWHT, you need to carry out PWHT. : : : : Dear Friend, : : : : For necessary or no to again PWHT after repaired area which have been PWHT,you can refer to ASME-Sec.VIII-Div.1-UCS-56 if your design code is ASME. : : : : : Hellooo alll...... Iam facing a problem right now please help me to sort it out.... i did a carbon steel vessel TOFD with 72mm thickness. after heat treatment we found a repair on one joint ( they forgot to attend the repair first time) with 100 mm length and 26mm depth with 5 mm size. After the repair scanning manufacture telling us to submit a report with out Repair indication. And they are saying up to 35mm it’s not required to Heat treat again. Please let me know if manufacture is right or not.. : : : : : Thanks in advance : : : : : Cheers ------------ End Original Message ------------ Optional Link URL: Example: "http://www....html". Alternative write "http://www.ndt.net/wshop/attach/filename.htm" if you transfered a filename.htm via FTP Page Title: is important! Optional Image URL: http://www....gif Attention! Please click the button only once. This may take a moment to process Forum Technical Discussions Help