What aspect does the ASME Code primarily govern?

The ASME Code, particularly the ASME Boiler and Pressure Vessel Code (BPVC), primarily governs the standards for the design, fabrication, inspection, and testing of pressure vessels and boilers. A significant part of this code encompasses the welding and brazing processes involved in the assembly of these structures. It not only addresses the materials and techniques used in welding but also specifies the qualifications required for welders and the testing methodologies necessary to ensure the integrity and safety of welded joints.

While the other aspects mentioned, such as non-destructive testing procedures, equipment safety, and the quality of construction materials, are related to the overall framework of ensuring safety and quality in engineering practices, the central focus of ASME is indeed on the welding processes as they pertain to pressure vessel and boiler construction. Thus, understanding the welding and brazing processes is critical for professionals working under the ASME Code since they directly impact the safety and functionality of pressure-retaining structures.