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 15 of 15 for “"nuclear waste repository"”.
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Transient modeling of host rock for a deep borehole nuclear waste repository
… and hydrological processes in a deep borehole repository of spent nuclear fuel. Such simulation requires a fully coupled solver, capable of capturing the processes at the scale of tens of kilometers and millions of years. The MOOSE framework was chosen for this purpose, where the FALCON …
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Heat transfer in vertical concentric cylinders in a high level nuclear waste repository
… problem to be addressed in the high level nuclear waste repository. The waste containers are vertically emplaced in the borehole 300 meters below ground. and in a horizontal grid of 30 x 8 meters apart. The borehole will be capped after the container emplacement and the container is …
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Nuclear Waste Management and Environmental Justice in Taiwan.
… examines environmental justice in the context of nuclear waste controversies on Orchid Island in Taiwan through the analysis of the differences between the Yami tribe and the Taiwanese migrants in their attitudes toward risks of the local nuclear waste repository and their understanding of the …
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Risky business: Moral arguments againts the Nuclear Waste Policy Act Amendments of 1987 Can consent be engineered?
Risky Business: Moral Arguments Against the Nuclear Waste Policy Act Amendments of 1987, Can Consent Be Engineered? asks the moral and ethical questions of assigning risk. In a democracy a fundamental principle for imposing risk is obtaining the consent of the governed. In the case of a proposed …
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Gwadapt: An adaptive finite element algorithm for groundwater contaminant transport problems
… numerical method is applied to models of two nuclear waste repository sites; The computer program used in this study was modified for execution on the Cray Y-MP supercomputer. Optimization of the code was undertaken for maximum efficiency and economy on the Cray Y-MP processor, and to reduce …
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The relationship of the Yucca Mountain repository block to the regional groundwater system: A geochemical model
… the State of Nevada as the site of high-level nuclear waste repository. Geochemical and isotopic modeling were used in this thesis to define the relationship of the volcanic tuff aquifers and aquitards to the underlying regional carbonate ground-water system. The chemical evolution of aground …
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Thermal considerations in the drift due to the emplacement of a horizontal high level nuclear waste container
… feasibility of locating a high level radioactive nuclear waste repository at Yucca Mountain, Nevada. The design of waste containers to be used for the long term storage of the high level nuclear waste has progressed from the borehole model indicated in the original site characterization plan to …
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Housing location decision under environmental risk: The effects of the Yucca Mountain waste repository
… Mountain is the site of a potential high-level nuclear waste repository in Nevada. The risks to health and safety of transporting and storing nuclear waste at Yucca Mountain may induce the residents of Nevada to move. When offered compensation, residents will weigh potential negative effects to …
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Mechanical properties of tuffaceous rocks under triaxial conditions
… designated as a potential site for a high level nuclear waste repository. Part of the site characterization program is an investigation of the mechanical properties of the tuffs which comprise Yucca Mountain. The study tested specimens of TCw tuff in triaxial compression to observe the effects of …
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Numerical Validation and Refinement of Empirical Rock Mass Modulus Estimation
… sites for highly sensitive structures such as nuclear waste repository tunnels. For these generally stiffer rock masses, the correct modulus assessment is essential for prediction of thermal response during the service life of the tunnel. Numerous empirical relationships based on rock mass …
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Modeling multiphysics of traveling wave reactor spent fuel disposal in deep crystalline host rock
… the Travelling Wave Reactor (TWR), an innovative nuclear reactor design. Because significantly higher heat is produced in the central region of the rods than in conventional spent fuel, TWR spent fuel presents new challenges. This work studies the disposal of TWR high-linear-power-spent fuel in …
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DEVELOPMENT AND APPLICATIONS OF SCANNING ELECTROCHEMICAL MICROSCOPY (SECM)
… are the candidates for package materials of nuclear waste. The grain boundary structures are imaged using SECM with ferrocenemethanol (Fc) as the redox media for the first time. Localized reactivities are studied by probe approach curves at different potentials, and their apparent rate …
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A decision analysis framework for the U.S. nuclear fuel cycle
… to mitigate some of the long-lasting impacts of nuclear waste. Deciding how to navigate this tradeoff, between cost and waste, is a central challenge for stewards of nuclear power. It is made more difficult by uncertainties that characterize the global future of nuclear electricity generation. …
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The initiation and evolution of ignimbrite faults, Gran Canaria, Spain
… is significant for the development of high level nuclear waste repositories, and CO2 sequestration facilities. Additionally, with growing concern over water resources, understanding the impact faults have on contaminant transport between the unsaturated and saturated zone has become increasingly …
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The sorption of uranium(VI) and neptunium(V) onto surfaces of selected metal oxides and alumosilicates studied by in situ vibrational spectroscopy
… which are essential for the safety assessment of nuclear waste repositories can be performed.