This publication is an update of IAEA TECDOC Series No. 1119 and provides current ageing management guidance for pressurized water reactor (PWR) vessel internals. Directed towards all those involved in the operation and regulation of PWRs, this publication deals with age related degradation and ageing management of PWR vessel internals. It presents the requirements and methodologies utilized for the assessment and management of ageing of these components and provides the technical basis for ensuring that the required safety and operational margins are maintained throughout the remainder of plant life.
