Final answer:
According to ASME B31.3, a piping inspector must have at least 5 years of experience in the design, fabrication, or inspection of industrial pressure piping.
Step-by-step explanation:
According to ASME B31.3, a piping inspector must have a minimum of 5 years of experience in the design, fabrication, or inspection of industrial pressure piping. This experience can be obtained through a combination of education and work experience. The purpose of this requirement is to ensure that the inspector has the necessary knowledge and skills to effectively perform their job and ensure the safety and integrity of the piping system.