Radioactive Waste Management

Nuclear Energy Agency

1990-0325 (online)
1990-0333 (print)
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A series of publications from the OECD Nuclear Energy Agency on various aspects of radioactive waste management. The publications in this series of analytical reports and conference proceedings focus on the development of strategies for a safe, broadly acceptable management of sustainable and all types of radioactive waste and materials.

Also available in French
Linkage of Geoscientific Arguments and Evidence in Supporting the Safety Case

Linkage of Geoscientific Arguments and Evidence in Supporting the Safety Case

Second AMIGO Workshop Proceedings, Toronto, Canada, 20-22 September 2005 You do not have access to this content

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03 July 2007
9789264021747 (PDF) ;9789264019669(print)

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The long-term safety of deep disposal of radioactive waste is strongly dependent on the performance of the geological setting. The geology fulfils important safety functions including isolating the waste from human contact or intrusion, providing a stable physical and chemical environment, insulating against external disturbances, and preventing or delaying the transport of radioactive materials away from the waste.  Thus, a sound understanding of the geology's history and evolution is central in supporting assessments that examine the long-term performance and safety of deep disposal. This conference proceedings examines how geoscientific arguments and data are compiled and linked to create a unified description of the geological setting to support a safety case. It also examines practical aspects and limitations in collecting, linking, extrapolating and communicating such information.

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Table of Contents

1. Introduction
-AMIGO and its Objectives
-Summary of the AMIGO-1 Workshop
-Structures of AMIGO-2 and Outline of this Report
2. Summary of Host and Key Topics Presentations
-OPG and CNSC Presentations
-Key Topics Presentations
-Plenary Discussion
3. Summary of the Working Groups Discussions
-Working Group A. Geoscience Indicators for Safety
-Working Group B: Communication of Geoscience Safety Arguments
-Working Group C: Realities of Site Investigation
-Working Group D: Assembling Geoscience Knowledge and Argument
4. Plans for an AMIGO Geoscience Compendium
5. Conclusions and Recommendations
-Observations and Recommendations
-Recommendations concerning AMIGO-3
Part A. Reports of the Working Groups
-Working Group A. Geoscience Indicators for Safety
-Working Group B. Communication of Geoscience Safety Arguments
-Working Group C. Realities of Site Investigation
-Working Group D. Assembly and Integrationof Geoscientific Knowledge and Arguments
Part B. Compilation of Papers
B.1. Plenary Session I. The Canadian Geoscience Programme
-The Deep Geologic Repository Technology Programme: Toward a Geoscience Basis for Understanding Repository Safety by M.R. Jensen, OPG Canada
-Long-Term Climate Change: The Evolution of Shield Surface Boundary Conditions by W. R. Peltier, University of Toronto
-Fracture Network Modelling: An Integrated Approach for Realisation of Complex Fracture Network Geometries by R. M. Srivastava, FSS Canada, Ltd.
-The Evolution of Groundwater Flow and Mass Transport in Candian Sheild Flow Domains: A Methodology for Numerical Simulation by J. F. Sykes and E. A. Sudicky, S. D. Normani, Y-J Park, F. Cornaton and R. G. McLaren, University of Waterloo, Canada
Geoscientific Information in the Assessment of Long-Term Safety: Application of CNSC Regulatory Guide G-320 by P. Flavelle, CNSC, Canada
B.2. Plenary Session II: Key Topics Presentations
-Potentials and Limitations of the Use of Geohistory for the Understanding of Current Features and Conditions and Possible Future Evolutions by M. Laaksoharji, Geopoint, Sweden; P. Pitkanen, VTT, Finland; J.-O. Selroos, SKB, Sweden; and M. Mantynen, POSIVA, Finland
-Transferability of Features and Processes from Underground Rock Laboratories and Natural Analogues - Use for Supporting Safety Cases in Argillaceous Formations by M. Mazurek, University of Bern; A. Gaustschi, P. Marschall, and W. R. Alexander, Nagra, Switzerland; G. Vigneron, P. Lebon and J. Delay, Andra, France
-Geoscientific Data Collection and Integration for the Waste Isolation PIlot Plant by R. L. Beauheim and S. McKenna, SNL, USA, D. W. Powers, USA, R. M. Holt, University of Mississippi, USA
-Review of a Site Developer's Geoscientific Data and Site Characterisation Information to Support Repository Certification by R. T. Peake, C. Byrum, and S. Ghose, EPA, USA
B.3. Keynote Presentations
-Geological Storage of CO2 at the Weyburn Oil Field, Saskatchewan: Summary of Results of the IEA GHG Weyburn CO2 Monitoring and Storage Project by S. Whittaker, Saskatchewan Industry and Resrouces, Canada
-Current Status of the OECD/NEA Project on "Natural Tracer Profiles Across Argillaceous Formations" CLAYTRAC, by M. Mazurek, University of Bern, Switzerland
B.4. Working Groups Presentations
-Use of Geoscientific Arguments in the Nirex Phased Geological Repository Concept: Illustrative Desk Study by S. Norris, B. Breen, and L. Knight by UK Nirex, Ltd.
-Past Geologic, Climatic, and Geomorphologic Forcing Influence on Present-Day Hydrodynamnics, a Key to Understanding Future Evolution: Example of the Paris Basin, France by S. Violette, A. Jost, and J. Goncalves
-Spatial Extension and Parameter Integration into the Safety Case - Examples from the Hyungarian LLW/ILW and HLW Disposal Projects by F. Fedor and I. Szucs, Mecsekerc, Ltd, Hungary
-Complex Branching Structures in Crystalline Rock: Treatment of Uncertainty in Safety Assessment by J. E. Geier, Clearwater Hardrock Consulting, USA
-Assessment of Uncertainty and Confidence in Site Descriptive Models - Experience from the Ongoing Site Investigation Programme in Sweden by J. Andersson, J. Streamflow, Sweden; K. Skagius, Kemakta Consultants, Sweden; A. Windberg, Conterra, Sweden, and A. Strom, SKB, Sweden.
List of Participants

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