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 18 of 18 for “"Nuclear fuels"”.
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Development of fission gas swelling and release models for metallic nuclear fuels
… and fission gas generation for fast reactor fuels are of high importance since they are among the main limiting factors in the development of metallic fast reactor fuel. Five new fission gas and swelling modules for the fast reactor metallic fuel code FEAST-METAL were developed. This …
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Wholesale power substitution for fossil and nuclear fuels by electric utilities: a cross-sectional analysis
Includes bibliographical references.
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Production of ceramic powders using auto-ignition combustion synthesis (AICS) for use in actinide bearing nitride ceramic nuclear fuels
Includes bibliographical references (pages 74-79).
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Molecular Dynamics Studies of Anisotropy in Grain Boundary Energy and Mobility in UO₂
Nuclear energy is a proven large-scale, emission-free, around-the-clock energy source. As part of improving the nuclear energy efficiency and safety, a significant amount of effort is being expended to understand how the microstructural evolution of nuclear fuels affects the overall fuel …
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Developing a thermodynamic model for the U-Pd-Rh-Ru quaternary system for use in the modelling of nuclear fuel
… rhodium, and palladium are fission products in nuclear fuels. These elements and their compounds change the properties of fuel pellets. Phase diagrams involving uranium have been constructed experimentally to study fission product behaviour, specifically diagrams containing the very stable UMe3 …
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Calculating thermochemical equilibrium for multiphysics simulations of nuclear materials : development of yellowjacket gibbs energy minimiser
Nuclear fuels and structural materials are highly complex systems that are remarkably challenging to understand and model. Material behaviours are influenced by multiple physical phenomena such as mechanics, chemistry, heat and mass transport, etc. Moreover, lower scale phenomena inform and drive …
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Synthesis and oxidation behavior of Cr alloyed uranium borides at high temperatures
Following the nuclear accident at Fukushima Daiichi Power Station in 2011, an urgent need for safer, more economical, and versatile nuclear fuels has arisen. In recent years, uranium boride (as a tetraboride and diboride) has been further investigated as a candidate fuel form for its high thermal …
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Characterization of the Acquisition Parameters of a Submersible Gamma-Ray Computed Tomography System
… in the non-destructive testing of irradiated nuclear fuels. The first section of this study proposes two acceleration approaches for rapidly modeling a transmission-type gamma-ray tomography system. The first relies on Monte Carlo simulations with a monodirectionally biased source sampled from …
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On selection and operation of an international interim storage facility for spent nuclear fuel
Disposal of post-irradiation fuel from nuclear reactors has been an issue for the nuclear industry for many years. Most countries currently have no long-term disposal strategy in place. Therefore, the concept of an intermediate nuclear spent fuel storage facility has been introduced as a method of …
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Benchmarking of the MIT High Temperature Gas-cooled Reactor TRISO-coated particle fuel performance model
… Performance Model to study the behavior of TRISO nuclear fuels. The code, TIMCOAT, is designed to assess the mechanical and chemical condition of populations of coated particles and to determine the failure probability of each of the structural coating layers. With this, the code determines the …
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The effectiveness of government policy and planning controls relating to wind energy
… risks resulting from the use of fossil and nuclear fuels, ineffective abatement of fossil fuel emissions, the UK wind resource, policies adopted by other countries, and issues of climate change and sustainable development. The question of financial support for wind energy expansion is also …
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Improving heat transfer in spent nuclear fuel disposal packages using metallic void fillers
… packages containing high heat generating spent nuclear fuels (SNF) require improved heat transfer to keep the peak cladding temperature from going above the tolerance limit. Filling the accessible void spaces between the container and the SNF with a high heat conducting metal is a potential …
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Application of data-driven methods in nuclear fuel performance analysis
Accurately predicting the behavior of nuclear fuel performance is essential for the safe and economic operation of nuclear reactors. Computer codes of different fidelities have been developed over past decades to simulate the behavior of nuclear fuels, such as the multi-dimensional, parallel, …
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Thermodynamic and Thermochemical Investigation of Advanced Triso Coated Particle Fuels
… the next several decades. Research into advanced fuels is an important part of GenIV development. The coated particle fuel concept has been considered since the 1940s and the zirconium carbide layer of the advanced coated particle fuel has been considered to solve the specific problems such as …
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Modeling the Dynamic Response of Vertical Spent Nuclear Fuel Dry Storage Casks under Three-Dimensional Earthquake Wave Fields
Nuclear power generation has emerged as a promising alternative to fossil fuels, offering the potential for reduced carbon emissions and cleaner energy production. However, the long-term management of irradiated nuclear fuels poses a significant challenge. These materials require ongoing heat …
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Microwave assisted remediation of organic waste in aqueous effluent streams
The nuclear industry in line with many other industries has a problem with contaminated organic waste in aqueous effluent. During the PUIREX process operated by British nuclear Fuels Ltd, the recovery of radioisotopes using 30% tributyl phosphate in odourless kerosene, the organic phase is degraded …
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Plutonium isotopes in the North Atlantic
… primarily as fallout from atmospheric nuclear weapons testing during the 1950's and 1960's. Earlier studies of Pu geochemistry are generally based upon the measurement of the combined activities of 239Pu and 249Pu (detected by alpha-counting and written as 239,240Pu) and assume an …