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on 11/8/24 at 3:02 PM
The Nuclear Energy Agency’s (NEA) Integration Group for the Safety Case (IGSC) and its predecessor, the Performance Assessment Advisory Group (PAAG), have carried out activities related to the compilation and use of lists and databases containing the features, events and processes (FEPs) of relevance to safety and performance assessment studies for deep geological repositories (DGRs) since the early 1990s. The NEA “International FEP (IFEP) List” is a comprehensive and structured list of generic FEPs, relevant to assessments of the post-closure safety of any DGR, which has been assembled through a long-term international collaboration between radioactive waste management organisations (RWMOs) through the NEA. It is intended to support national programmes in the production of their safety cases through the provision of a comprehensive and internationally accepted list of factors that may need to be considered when assessing the safety of DGRs. RWMOs have complemented the generic IFEP List with so-called “Project-specific FEP (PFEP) Lists” that are tailored to the specific wastes, geologies or disposal concepts of interest to them, and are therefore of less general applicability than the IFEP List. Individual Project FEPs have been related to relevant International FEPs in the past. In addition to the IFEP List, the NEA has commissioned the production of a number of “FEP Databases” that are designed to store the IFEP List and PFEP Lists in an easily navigable and searchable format.
The NEA released version 3.0 of the IFEP List in 2019. To coincide with this, a major revision was also made to the NEA FEP Database that moved it to a web-based system accessible from the public NEA website. This database was designed to allow full version control and was intended to provide a home for all releases of the IFEP List in future. The current document presents version 3.1 of the IFEP List that updates version 3.0 in light of a review of:
