Complete penetration and complete fusion are required for welds joining shell plates to shell plates. Inspection for the quality of
the welds shall be made using either the radiographic method specified in 8.1 or alternatively, by agreement between the Purchaser
and the Manufacturer, using the ultrasonic method specified in 8.3.1 (see Appendix U). In addition to the radiographic or
07 ultrasonic examination, these ,velds shall also be visually examined. Furthermore, the Purchaser's inspector may visually inspect
all butt-welds for cracks, arc strikes, excessive undercut, smface porosity, incomplete fusion, and other defects. Acceptance and
repair criteria for the visual method are specified in 8.5.