written and qualified in accordance with the rules of this
Section, and welders and welding operators of automatic
and machine welding equipment also qualified in accordance
with these rules may be used in any construction
built to the requirements of the ASME Boiler and Pressure
Vessel Code or the ASME B31 Code for Pressure Piping.
However, other Sections of the Code state the rules
under which Section IX requirements are mandatory, in
whole or in part, and give additional requirements. The
reader is advised to take these provisions into consideration
when using this Section.