D1.1:2004 4.1.1.2 WPS Qualification to Other Standards.
"The acceptability of qualification to other standards is the Engineer's responsiblity, to be exercised based upon the specific structure, or service conditions, or both. AWS B2.1.XXX-XX Series on Standard Welding Procedure Specifications may, in this manner, be accepted for use in this code."
D1.1:2004 4.1.2.1 Previous Performance Qualification.
"Previous performance qualification tests of welders, welding operators, and tack welders that are properly documented are acceptable with the approval of the Engineer. The acceptability of performance qualification to other standards is the Engineer's responsibility, to be exercised based upon the specific structure, or service conditions, or both. Welders and welding operators qualified by standard test to AWS B2.1, Standard for Welding Procedure and Performance Qualification, may, in this manner, be accepted for use in this code."