Which ASME BPVC Section lists base and filler metal specifications that are permissible for use in qualifying welders and procedures?

• A. Section IX
• B. Section II Part D
• C. Section II Part C
• D. Section VIII

Answer: (A)

Main concept: The section that governs how welders and welding procedures are qualified, including what materials can be used in those qualifications, is Section IX. It provides the framework for welding procedure qualification and welder performance qualification and specifies that the base metal and filler metal used in the qualification must be those listed as acceptable in Section II. The actual material specifications live in Section II (base metals in Part A and filler metals in Part D), but Section IX ties the qualification process to those permissible materials and sets the requirements for performing the qualification tests. Other sections cover the material specifications themselves, properties, or boiler construction, not the qualification framework.