Several Nuclear Energy Agency (NEA) member countries have agreed to establish the Component Operational Experience, Degradation and Ageing Programme (CODAP) to encourage multilateral co-operation in the collection and analysis of data relating to degradation and failure of metallic piping and non-piping metallic passive components in commercial nuclear power plants. The scope of the data collection includes service-induced wall thinning, part through-wall cracks, through-wall cracks with and without active leakage, and instances of significant degradation of metallic passive components, including piping pressure boundary integrity. This joint database project is organised under the NEA Committee on the Safety of Nuclear Installations (CSNI).
This report describes the status of the CODAP Project at the conclusion of its second term (2015-2017). It gives a high-level overview of the passive metallic component operating experience as documented in the CODAP event database, including trends-and-patterns, material degradation mitigation effectiveness, and experience with different nondestructive examination techniques.