There is a new drama that seems to appear everyday and it is becoming increasingly difficult to ensure contractor compliance when the specs are full of holes, Thanks again and have a great day, Shane.Hello guys, Can someone help with advice or direction please.
Aws Weld Repair Procedure Full Of HolesIs there anything in API 650 ASME IX that governs repair welding using different processes. Specifically SMAW repair welding over EGW, SAW and FCAW-SS original welds. The contractor has a qualified WPS for SMAW single vee butt welding but does not have a specific repair procedure. ASME IX permits a combination of welding procedures to be used to make a weld and they may be qualified either separately or in combination. A SMAW repair of a weld made with another process is permissible. Requalification is not required for repairing welds made with another process. Thanks Marty, The basis for my original question was whether a procedure had to be specific to the repair. The contractor has just got a note on each WPS that any repairs must be carried out in accordance with a SMAW single vee butt WPS. It was my opinion that this gives no guidance to the welder in terms of excavation, rewelding, retesting etc. Aws Weld Repair Procedure Code To BeI havent run across a case where those activities were specifically required by a code to be addressed on a WPS, except that method of preparation and joint details must be addressed. Typically, excavation, cavity preparation, NDE to verify removal, rewelding and final testing are addressed per the companys quality manual, such as on a weld traveler, a detailed repair instruction which references the WPS, or a supplemental sheet attached to a WPS. Aws Weld Repair Procedure Verification Of RemovalShane, MBSims You are quite right, excavation, cavity preparation, NDE verification of removal of defect, rewelding and post weld NDE are generally mentioned in quality manual or specification for welding. After excavation and cavity preparation, the shapedepth of weld groove can not be predicted. Nominating a single vee buttweld WPS as the repair procedure does not assist the welder who is performing the repair. The other thing that concerns me is an excerpt from a Lincoln Datasheet regarding intermixing. When Innershield ( FCAW-S) weld deposits are intermixed with weld deposits from other welding processes, a decrease in weld metal Charpy V-notch toughness properties may occur. Would this not be sufficient justification to require a specific qualified repair procedure if you were going to intermix SMAW with FCAW-S Regards, Shane. There is nothing specific in any Code (to my knowledge) that prohibits using one process in lieu of another. ![]() Shane, If your service specification doesnt require qualification with impacts I wouldnt worry too much about the loss of toughness by welding over FCAW-S. The loss of toughness would be a concern were your service to be siesmic or low temp. ![]() Thanks guys, We are governed by specifications that leave a lot to be desired and are pretty much chasing our tails.
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