welding heat control
Common Audit Finding
Requirement
Correction
Welder not checking preheat and interpass min/max at appropriate times or locations
Ensure welders check preheat and interpass temperatures at specified times and locations.
S9074-AR-GIB-010/278 4.2.2
Calibrate devices used for checking temperatures and ensure their accuracy.
Device for checking minimum and maximum preheat and Interpass
S9074-AR-GIB-010/278 4.2.2, S9074-AQ-GIB-010/248 4-7.2.c
temperatures not accurate (infrared device not calibrated, canted contact pyrometer)
Post weld heat treatment (see Tech Pub 278 Section 8 if applicable or for guidance): Non- weld spec driven thermal processes (such as stress relief of formed of CuNi fittings or nitriding) effectively become PWHT that must be qualified
Qualify non-weld spec driven thermal processes as PWHT if applicable.
S9074-AQ-GIB-010/248 4-7.2.c
Oven temperature measurement devices not calibrated
Regularly calibrate oven temperature measurement devices.
S9074-AQ-GIB-010/248 4-7.2.c
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