API 577







None! Number of welds to RT is established by the primary code - ANS How many welds does 577 require to be RT'd



Arc blow - ANS Deflection of an arc from normal path because of opposing magnetic forces



Arc length - ANS Distance from the tip of the welding electrode to the adjacent surface of the weld pool



Autogenous - ANS Welds made without filler metal



Backing - ANS Material or device placed on back side of a joint, to support and retain weld metal



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