Chapter 18 Weld Inspection and Repair
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Postweld Inspection
All of the nondestructive testing (NDT) required
for fi nal acceptance of the weld must be completed
after the weld repair is done. This means that even
if several inspections were satisfactory before the
weld was rejected, all of the inspections must be
redone. Repairs can cause new problems in a weld.
After a repair is made, the entire weldment must be
reinspected.
Repair Review
Repairs are expensive and often detract from the
appearance of the fi nal weld. Everything within reason
should be done to eliminate defects that require costly
repairs. Review every fl aw and defect in the weld,
regardless of its severity, to determine its cause. Plan
the possible corrective action that can be taken in the
future to eliminate similar problems.
Repair review should include the following areas:
• base material
• tooling
• preparation for welding
• joint preparation
• process application (welding variables)
• welder training and skill