The Integrated Performance Assessment in SKI Project-90

by J. Andersson, Swedish Nuclear Power Inspectorate, Stockholm, Sweden,
K. Andersson, Swedish Nuclear Power Inspectorate, Stockholm, Sweden,
T. Carlsson, Swedish Nuclear Power Inspectorate, Stockholm, Sweden,
F. Kautsky, Swedish Nuclear Power Inspectorate, Stockholm, Sweden,
S. Norrby, Swedish Nuclear Power Inspectorate, Stockholm, Sweden,
B. Sundström, Swedish Nuclear Power Inspectorate, Stockholm, Sweden,
S. Wingefors, Swedish Nuclear Power Inspectorate, Stockholm, Sweden,



Document Type: Proceeding Paper

Part of: High Level Radioactive Waste Management 1991

Abstract: The SKI Project-90 is a performance assessment of a hypothetical repository system with KBS-3 features in crystalline rock. A large part of the effort has been to identify and characterize the underlying uncertainties and scenarios that may affect the repository. The central analysis is a sensitivity study of the release and transport of radio-nuclides from the repository. In most situations only small amounts of radio-nuclides will be released, but there are some areas of uncertainty where the performance of the repository could be questioned. In both near-field and far-field the capacity for matrix diffusion and sorption, which depends on both geochemical and hydrological processes, has a dominant influence on the release of a large number of important nuclides. The uncertainties are partly of a conceptual or site characterization nature, but they may also be influenced by external events like faulting or failure in sealing the repository.

Subject Headings: Project management | Uncertainty principles | Sensitivity analysis | Hydrology | Sealing | Rocks | Matrix (mathematics) | Diffusion

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