ASME Section IX covers:

• A. Welding and brazing qualifications
• B. Piping design
• C. Material data requirements
• D. Heat treatment procedures

Answer: (A)

ASME Section IX is about qualification of welding and brazing. It establishes the rules for who is qualified to perform welding, brazing, and fusing, and how those qualifications are demonstrated through approved procedures and tests, with the necessary records to prove competence. This scope focuses on proving that the welding and brazing work will meet code requirements, not on how to design a system, specify materials, or dictate heat-treatment procedures. Piping design is covered by piping codes (such as the B31 series), material data requirements come from Section II and related material standards, and heat treatment procedures are addressed in the context of the project WPS and other code sections rather than by Section IX’s qualification rules. Therefore, the aspect being tested is welding and brazing qualifications.