Final answer:
ASME BPVC Section IX lists the base and filler metal specifications for qualifying welders and procedures, ensuring high-quality welding and brazing in line with code requirements.
Step-by-step explanation:
The ASME BPVC (American Society of Mechanical Engineers Boiler & Pressure Vessel Code) section that lists base and filler metal specifications that are permissible for use in qualifying welders and procedures is Section IX. This section contains guidelines for the qualification of welding and brazing procedures as well as the qualification of welders, brazers, and welding and brazing operators in order to ensure that welding and brazing are performed with high quality according to code requirements. It includes procedures for the qualification of welding and brazing variables to ensure the quality of welded joints and brazed joints through proper material selection and control of the welding or brazing process parameters.