This Practice provides guidelines for specifying the requirements for the examination and leak testing of metallic, lined metallic, and nonmetallic piping systems designed in accordance with ASME B31.3 Process Piping, hereinafter referred to as the Code. The requirements include examination of piping materials, components, fabrication, assembly, installation; and associated documentation. This Practice also covers the extent of examination, criteria for acceptance, and correction of defective work. It describes the types of leak tests, bases for selecting the appropriate tests, and arrangements for testing piping.