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Rick0001, thank for your input. I am pretty sute that the production welding is in accordance wit the late code, but different formulas for calculations with same results. I need some independent opinions.

The PQR was qualifed before 2010, with impact testing as required by ASME III. The welding power source is plused current for PQR welding and productin welding. It should be waveform controlled. But the calculation formula is V x A / Travel Speed for the code before 2010, but A was and is...

We have GMAW machined welding equipment with pulsed amperage power sources, wire feeder, travelling system and ADM (arc data monitor). The PQR and WPS were qualified with heat input calculated per QW-409.1 (a) Voltage x Amperage /Travel Speed where A was actually average amperage based on 25k...

We have GMAW machined welding equipment with pulsed amperage power sources, wire feeder, travelling system and ADM (arc data monitor). The PQR and WPS were qualified with heat input calculated per QW-409.1 (a) Voltage x Amperage /Travel Speed where A was actually average amperage based on 25k...

Further to corrosion and erosion, and the acceptance of weld by RT, there is a concern of crack of the weld attaching the backing material after years operation, and the loose material become a risk of system blockage.

Agree with DekDee, you need to qualify a welding procedure for this repair. Suggest to review the Lincoln Wearshield MI electrode for the welding repair with preheating. The welded area should be verified for the hardness.