Excessive heat input may result from weld repair of the defect discovered by post-weld NDT. Should such procedure be pre-qualified, and how?
It is appropriate to demonstrate that the weld repair has not damaged the material, i.e., to qualify the repair in much the same way as the procedure was qualified. So fabricators have qualified reasonably anticipated repair procedures in advance. Alternatively, the repair practice can be documented and simulated on a production runout tab, with the usual production test plate procedures then being applied to the repaired weld.
