Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 13 of 13 for “"geological repository"”.
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Modelling long term conditions in Canadian deep geological repository
… of high-level nuclear waste includes a deep geological repository (DGR). The DGR design involves an engineered barrier system (EBS) within a low permeability host rock (crystalline or sedimentary) that serves as a natural barrier. The EBS includes copper coated used fuel containers (UFCs) …
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Practical Perspectives on Spent Nuclear Fuel Transportation Risks
… from temporary storage facilities to a geological repository. There has been a great deal of publicized concern over the hazard of shipments of radiological materials in recent years due to the proposed Yucca Mountain repository. This concern over the radiological material transport is …
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Brittle-viscous deformation cycles at the base of the seismogenic zone in the continental crust
… (SW Finland), located at the site of a deep geological repository for nuclear waste. Combined microstructural analysis, electron backscatter diffraction (EBSD), and mineral chemistry were applied to reconstruct the variations in pressure, temperature, fluid pressure, and differential stress …
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Ion Beam Synthesis and Irradiation for Si-Based Photonic Materials and Nuclear Waste Management
… simulate long-term radiation exposure under deep geological repository conditions. Alpha irradiation of UO₂ in the solid phase increased the fraction of U in the U(IV) state (surface reduction), while aqueous conditions promoted surface oxidation, with increased U(VI) compared to unirradiated UO₂. …
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Fracture Initiation and Propagation in Low Porosity Crystalline Rocks: Implications for Excavation Damage Zone (EDZ) Mechanics
The Deep Geological Repository (DGR) is the globally preferred concept for long-term storage of nuclear waste, in which the combination of engineered barriers and the surrounding geology are designed to safely and securely contain the radioactive waste. The construction processes of underground …
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Laboratory Strength Testing of Argillaceous Limestone Under Varying Saturation, Scale, Loading Rate, and Confinement Conditions
The Deep Geological Repository (DGR) concept is the proposed solution for the long-term storage of nuclear waste in Canada. While site selection processes are currently underway for high-level waste storage, a low and intermediate waste storage DGR is planned for development at depth in Kincardine, …
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Shallow Depths: Reproductions of Nuclear Landscapes and Anomalies of Consent at Chalk River
… designed to identify potential sites for a deep geological repository (DGR) to house radioactive waste. In this doctoral research, I examined the siting process for a Near Surface Disposal Facility (NSDF) in Chalk River, Ontario. I attended public hearings and community meetings as part of close …
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Proliferation Resistance of Utilizing Enriched Reprocessed Uranium
… U resources and reducing the volume of deep geological repository.
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An Investigation into the Decontamination of Carbon-14 from Irradiated Graphite
… biosphere. In addition the Low Level Waste (LLW) repository at Drigg has very strict guidelines regarding C-14 authorisation and there is currently no deep geological repository available in the UK. Varying amounts of carbonaceous deposits have been identified on irradiated graphite samples …
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Investigation of ThO2 as a structural analogue for spent nuclear fuel dissolution under repository conditions
… fuels in Finland and Sweden is disposal in a geological repository. In deep bedrock, the release of Th, U and other radionuclides through man-made barriers and the geo- and biosphere will be controlled by the dissolution of the fuel by groundwater. Thorium dioxide is isostructural to uranium …
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Coupling source term, mineral reactivity and flow in radionuclide transport
… predict its performance in the near field of a geological repository. A single-pass flow-through (SPFT) experimental system was used to measure the forward dissolution rates of MW25. Experiments were conducted in two parts. Experiment Part 1 considers the dissolution of the waste glass in …
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Coupled Hydro-Mechanical Modelling of Gas Migration in Saturated Bentonite
… for the engineering barrier system of a deep geological repository (DGR) where nuclear wastes are disposed, as it has several desirable properties for sealing the nuclear wastes, including low permeability, low diffusion coefficient, high adsorption capacity and proper swelling ability. …
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Analýza zdrojového členu vyhořelého jaderného paliva JE Dukovany pro hlubinné úložiště s uvažováním variant LTO
Diplomová práce se zabývá analyzováním zdrojového členu vyhořelého jaderného paliva Jaderné elektrárny Dukovany za účelem stanovení návrhů předávání vyhořelého jaderného paliva do hlubinného úložiště v České republice. Pro uvedení čtenáře do problematiky jsou stručně popsány hlavní aspekty, mezi …