Minor casting weld repairs Minor casting weld repairs ngauge (Materials) (OP) 12 Jan 03 19:30 Is there some exception in ASME regarding not having to perform PWHT on minor surface weld repairs (i.e. porosity of RTJ surface), eventhough the WPS has been qualified with PWHT. Northern Gauge Sherwood Park Ab RE: Minor casting weld repairs deanc (Specifier/Regulator) 13 Jan 03 08:12 Look in SecIX,the QW-250 section. Be careful and make sure you check the construction code before proceeding. IESecI+SecVIII for additional requirements. RE: Minor casting weld repairs GRoberts (Materials) 17 Jan 03 14:49 There is no exception in ASME IX for using a procedure qualified with PWHT in the no PWHT condition. However, as mentioned in the previous post by deanc, the constuction code also has things to say about your application, and depending on the material, thickness, etc, you may not be allowed to put the casting into service without PHWT even if your weld procedure is qualified as such according to ASME section IX.