High pressure pipe welding must be qualified according to which section of the ASME code?

The correct answer focuses on Section 9 of the ASME code, which pertains specifically to the qualifications for welding and brazing. This section outlines the requirements for the qualification of welders and welding procedures, which is essential in ensuring that high-pressure piping systems are safe, reliable, and meet industry standards. For high-pressure pipe welding, it is crucial that the weld quality and procedures are thoroughly evaluated and qualified, as the integrity of the piping system is critical in preventing failures that could lead to hazardous situations.

Section 5 deals with nondestructive examination (NDE), while Section 8 covers rules for constructing pressure vessels. Section 11 addresses the inspection of nuclear power plants. Although these sections are important in their respective areas, they do not specifically address the qualifications of welders and welding procedures needed for high-pressure pipe applications. Thus, Section 9 is the authoritative reference for qualifying welding procedures and personnel involved in high-pressure pipe welding.