For the NEA, a web-based application of Features, Events and Processes (FEP) relevant to the long-term safety of geological disposal facilities for radioactive waste is being developed. This application is to be managed by the NEA. The application has an administrative interface, through which the NEA will be implementing its updated International FEP List and national member organisations can define their own project-specific FEP lists, with version control and review and approval processes built in. It also has a public facing interface though which published versions of the FEP Lists and links between them can be viewed. Security of the database is important for this application, given its exposure to the public internet.