9: Non-destructive Examination

9.2 MATERIALS IDENTIFICATION
During welding inspection, the inspector may need to verify the conformance
of the base material and filler metal chemistries with the selected or specified
alloyed materials. This may include reviewing the certified mill test report,
reviewing stamps or markings on the components, or require PMI testing. It is
the responsibility of the owner/user to establish a written material verification
program indicating the extent and type of PMI to be conducted. Guidelines for
material control and verification are outlined in API RP 578.
Keyword:
Extents of PMI is Owner’s responsibility