NEA Component Operational Experience, Degradation and Ageing Programme (CODAP)

The Component Operational Experience, Degradation and Ageing Programme (CODAP) combines the follow-up of two previous NEA projects: the Pipe Failure Data Exchange Project (OPDE) and the stress corrosion cracking part of the Stress Corrosion Cracking and Cable Ageing Project (SCAP).


The Pipe Failure Data Exchange Project (OPDE) was established in May 2002 to produce an international database on the piping service experience applicable to commercial nuclear plants. The OPDE project was completed at the end of May 2011. In 2006 the SCAP project was established by the NEA to assess two subjects, stress corrosion cracking (SCC) and degradation of cable insulation, due to their implication for nuclear safety and their relevance for plant ageing management. The project ran successfully from June 2006 to June 2010. Seventeen NEA member countries joined the SCAP project. The International Atomic Energy Agency (IAEA) and the European Commission also participated as observers.

Following the completion of the SCAP project, SCC participants recognised that there are many similarities between the OPDE and SCAP SCC projects and therefore, the concept of a new project was envisaged to combine the two projects and build two new database projects called: Component Operational Experience, Degradation and Ageing Programme (CODAP) and Cable Ageing Data and Knowledge Project (CADAK). The cable ageing part of the SCAP project concerning electrical and I&C cables and management of their ageing effects is managed by another NEA database project, CADAK.


The objectives of the CODAP are to:

The CODAP is managing information in the CODAP Online Event Database and the CODAP Knowledge Base. The database also includes the CODAP Knowledge Base part with national documents and records of the participants.

During the 2012-2014 period, the CODAP published the status report and two technical reports based on the analysis of the events collected in the database.

Project period

February 2015 to December 2017


Canada, Chinese Taipei, Czech Republic, France, Germany, Japan, Korea, Slovak Republic, Spain, Switzerland and the United States


EUR 75 000 per year

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Last reviewed: 26 February 2016