Metadata in geological disposal of radioactive waste. The RepMet libraries

The OECD Nuclear Energy Agency (NEA) launched the Radioactive Waste Repository Metadata Management initiative (RepMet) in 2014 under the auspices of the Integration Group for the Safety Case (IGSC) technical advisory body. The initiative involves programmes from over ten different countries working on the formulation of a consistent set of guiding principles for capturing and generating metadata, recommending a shortlist of selected relevant standards and guidelines on international good practices. One of the main objectives of RepMet is to provide descriptions of conceptual data models and controlled vocabularies, forming the so-called 'libraries' in the project context, which support data and metadata use for relevant topics within radioactive waste repository programmes. RepMet has developed a Site Characterisation Library, a Waste Package Library, and a Repository Library. This paper describes the three libraries and discusses their relationship to the overall RepMet initiative. (author)