This chapter discusses the general requirements of Section XI of the ASME Boiler and Pressure Vessel Code that are applicable to all Code Classes of components, including steel vessels, piping, pumps, and valves, as well as concrete structures. It identifies applicability limits of Section XI, addresses interfaces with any applicable regulatory requirements, and explains the use of Code Editions and Addenda and Code Cases. The chapter describes periodic nondestructive examination (NDE) and pressure testing used to ensure the integrity of components (other than containment vessels) within the scope of the Code’s jurisdiction. The requirements of NDE are specified, ranging...