Description
The retention of records of the content and nature of a repository after closure and also the placing of permanent markers at or near the site.
Category
Categorisation as a Feature, Event and/or Process.
Features
are physical components of the disposal system and environment being assessed. Examples include waste packaging, backfill, surface soils. Features typically interact with one another via processes and in some cases events.Events
are dynamic interactions among features that occur over time periods that are short compared to the safety assessment timeframe such as a gas explosion or meteorite impact.- "Processes" are issues or dynamic interactions among features that generally occur over a significant proportion of the safety assessment timeframe and may occur over the whole of this timeframe. Events and processes may be coupled to one another (i.e. may influence one another).
The classification of a FEP as an event or process depends upon the assessment context, because the classification is undertaken with reference to an assessment timeframe. In this generic IFEP List, many IFEPs are classified as both Events and Processes; users will need to decide which of these classifications is relevant to their context and its timeframes.
- Feature
Relevance to Performance and Safety
The “Relevance to Performance and Safety” field contains an explanation of how the IFEP might influence the performance and safety of the disposal system under consideration through its impact on the evolution of the repository system and on the release, migration and/or uptake of repository-derived contaminants.
These records and markers will allow future generations to recall or identify the existence and nature of the repository following closure, and influence the likelihood of events such as future intrusion into the repository. The loss of such records and markers will increase the likelihood of inadvertent intrusion sometime in the future (FEP 1.4).
2000 List
A reference to the related FEP(s) within the 2000 NEA IFEP List.
Related References
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IAEA (), The Management System for the Development of Disposal Facilities for Radioactive Waste, Nuclear Energy Series No. NW-T-1.2, International Atomic Energy Agency, ISBN 978–92–0–113810–1, http://www-pub.iaea.org/MTCD/Publications/PDF/P1496_web.pdf
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IAEA (), Comparative Analysis of Methods and Tools for Nuclear Knowledge Preservation, IAEA Nuclear Energy Series No. NG-T-6.7, International Atomic Energy Agency, Vienna, http://www-pub.iaea.org/MTCD/Publications/PDF/Pub1494_web.pdf
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NEA (), Preservation of Records, Knowledge and Memory across Generations (RK&M): A Literature Survey on Markers and Memory Preservation for Deep Geological Repositories, NEA/RWM/R(2013)5, Nuclear Energy Agency/Organisation for Economic Cooperation and Development, http://www.oecd-nea.org/rwm/docs/2013/rwm-r2013-5.pdf