DOPAS EPSP experiment
Jiří Svoboda, Jaroslav Pacovský, Markéta Dvořáková, Irena Hanusová, Petr Večerník, Dagmar Trpkošová, 2017. "DOPAS EPSP experiment", Radioactive Waste Confinement: Clays in Natural and Engineered Barriers, S. Norris, J. Bruno, M. van Geet, E. Verhoef
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The international DOPAS Project (Demonstration Of Plugs And Seals), which involves the participation of 14 European organizations (Posiva, ANDRA, DBE-TEC, GRS, NAGRA, RWA, SÚRAO, SKB, CTU, NRG, GSL, BTECH, VTT and ÚJV Řež), is concerned with the structural solution for sealing plugs to be used in deep geological radioactive waste repositories. The project is funded by the 7th Framework Programme – EURATOM.
The Czech contribution to the DOPAS project (the EPSP experiment – Experimental Pressure and Sealing Plug) consists of an experiment that is being conducted at the Josef Regional Underground Research Centre (Josef URC, Čelina-Mokrsko). The aims of the EPSP experiment are to develop, monitor and verify the functionality of such plugs, and to determine a detailed characterization of the materials from which the plug is constructed. The EPSP experiment is being conducted by a Czech consortium made up of SÚRAO, CTU and ÚJV Řež, a. s.
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It is internationally accepted that the safest and most sustainable option for managing radioactive waste is geological disposal, utilizing both engineering and geology to isolate the waste and contain the radioactivity.
This Special Publication contains 25 scientific studies presented at the 6th conference on ‘Clays in natural and engineered barriers for radioactive waste confinement’ held in Brussels, Belgium in 2015. The conference and this resulting volume cover many of the aspects of clay characterization and behaviour considered at various temporal and spatial scales relevant to the confinement of radionuclides in clay, from basic phenomenological process descriptions to the global understanding of performance and safety at repository and geological scales.
The papers in this volume consider research into argillaceous media under the following topic areas: large-scale geological characterization; general strategy for clay-based disposal systems; geomechanics; mass transfer; bentonite evolution and gas transfer.
The collection of different topics presented in this Special Publication demonstrates the diversity of geological repository research.