Ok.
When I review table 9.14 for tubular with backing I see base metal ≤3/8" (less than or equal to) qualifies the welder to 1/8" to 3/4" maximum.
Is this in effect saying that If I use a test piece that is less than 3/8" thick, that the welder is still qualified up to 3/4" ?
Tribal knowledge has always inferred that the welder was qualified to 2x the base metal thickness, but I don't see it in the table or in the supporting text.
9.17.1 . "For tests on tubulars, the number and type of test specimens
and the range of qualified production welding
thicknesses and diameters for which a welder or welding
operator is qualified shall be in conformance with Table 9.14.
Or for that matter; any test thickness that exceeds 3/8" appears to qualify for unlimited?