Description
The processes and conditions that directly affect the health or give rise to other impacts on human beings and the environment from given concentrations of any repository-derived contaminants in environmental media.
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.
- FEP Subgroup
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.
2000 List
A reference to the related FEP(s) within the 2000 NEA IFEP List.
Related References
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Thorne M and Kelly M (), Radionuclides Handbook, Environment Agency, R&D Technical Report P3-101/SP1b, Environment Agency, Bristol, ISBN : 1844321762, 212pp, http://www.gov.uk/government/uploads/system/uploads/ attachment_data/file/291128/sp3-101-sp1b-e-e.pdf
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UNSCEAR (), Source and Effects of Ionizing Radiation, United Nations Scientific Committee on the Effects of Atomic Radiation (UNSCEAR) Report to the General Assembly with Scientific Annexes, United Nations, New York, ISBN 978-92-1-142274-0, http://www.unscear.org/docs/reports/2008/09-86753_Report_2008_Annex_B.pdf
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UNSCEAR (), Biological mechanisms of radiation Actions at Low Doses: A White Paper to Guide the Scientific C Committee’s Future Programme of Work, United Nations Scientific Committee on the Effects of Atomic Radiation White Paper, United Nations, New York, 45, http://www.unscear.org/docs/reports/ Biological_mechanisms_WP_12-57831.pdf