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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 20 of 51 for “"Generation IV"”.
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Neptunium-237 Production in Generation IV Reactors Spectra
Made available in DSpace on 2017-07-06T18:42:21Z (GMT). No. of bitstreams: 3 Ascic_Mirko_MS.pdf: 2911647 bytes, checksum: 1a92ea9ca2507a3a373c772f24e1ba89 (MD5) Ascic_Mirko_MS_ABS.pdf: 86417 bytes, checksum: f6ab3fa57862110c2fd32a11749d9d56 (MD5) license.txt: 4813 bytes, checksum: …
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Feasibility of risk-informed regulation for Generation-IV reactors
With the advent of new and innovative Generation-IV reactor designs, new regulations must be developed to assure the safety of these plants. In the past a purely deterministic way of developing design basis accidents was prevalent, however this is felt to not be satisfactory, since this leaves …
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Risk-informed design guidance for a Generation-IV gas-cooled fast reactor emergency core cooling system
Fundamental objectives of sustainability, economics, safety and reliability, and proliferation resistance, physical protection and stakeholder relations must be considered during the design of an advanced reactor. However, an advanced reactor's core damage frequency dominates all other …
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Critical assessment of techniques, markets and overall economics of Generation III+ and IV reactors
… assessment of the economic potential of Generation III+ and IV reactors. It examines both a market and product-based approach for the cost of new nuclear installations. It is the contention of this author that the support of the economic benefits for Generation IV reactors is unwarranted. …
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Feasibility Analysis for a Nuclear-Powered Commercial Merchant Ship
… the best option for installation onboard a civilian container ship in support of the IMO’s strategy for reducing greenhouse gas emissions from ships. Greenhouse gas reduction has been a major challenge within commercial maritime shipping as the industry has recently expanded significantly. …
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Identification and resolution of problems with methodology used in selection of technological concepts for R&D support
… is that arguments regarding who should receive funding come from a concept's proponents, who are usually interested and biased. More objective evaluation methods are needed. As part of this work it is important to understand better how qualified experts evaluate technological concepts. Can a …
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Mean-Field Parameter Study of Radiation-Induced Segregation in a Binary Metal Alloy
… pursuit of advanced materials for deployment in Generation IV (Gen-IV) nuclear reactor designs. A mean-field study is conducted on a body-centered cubic (BCC) A-B binary metal alloy system. The performance of the simulated metal system is measured by assessing the degree of segregation that …
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Power conversion system design for supercritical carbon dioxide cooled indirect cycle nuclear reactors
… conversion cycle which couples nicely to many Generation IV nuclear reactors. This work investigates the power conversion system design and proposes several "Third Generation" plant layouts for power ratings ranging between 20 and 1200 MWe for the recompression cycle. A 20 MWe simple cycle …
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Microstructure Evolution of Two Model Ferritic/Martensitic Steels Under Ion Irradiation In A Transmission Electron Microscope
… structural and cladding components designed for Generation IV reactors because of their superior resistance to radiation damage at the high operating temperatures envisioned in these reactors. To enable the development and optimization of such advanced alloys for in-reactor use, a fundamental …
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Development of thermodynamic cycles for sodium-cooled-fast reactors.
Currently, one engineering challenge is designing Generation IV (GEN-IV) Nuclear Power Plants (NPPs) with significantly higher thermal efficiencies compared to current NPPs, and to match, or at least to be close to, the thermal efficiencies reached by fossil-fired power plants, which are currently …
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Study on specifics of thermalhydraulics and neutronics of pressure-channel supercritical water-cooled reactors (SCWRs)
… an international collaboration to develop a next generation (i.e., Generation IV) of nuclear reactors. Chosen as one of the six Generation‒IV nuclear-reactor concepts, the SCWRs are expected to have high thermal efficiencies within the range of 40 ‒ 50% owing to reactor’s high outlet temperatures. …
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Developing 1-D heat transfer correlations for supercritical water and carbon dioxide in vertical tubes
… part of the energy mix since it offers a relatively clean, safe and reliable source of electrical energy. However, opportunities for building new generation nuclear systems will depend on their economic and safety attractiveness as well as their flexibility in design to adapt in different …
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Reduction of Solid Uranium Dioxide in Calcium Salts
… without nuclear energy. Another sign that the Generation IV International Forum (Kelly, Gen IV International Forum: A decade of progress through international cooperation, 2014) has pointed out is to utilize uranium resources to the maximum and recycle spent nuclear fuel through burn-up in the …
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Experimental investigations of thermodynamic properties of the LiF –CsF binary system and FliNaK
Generation IV nuclear power technologies, including various molten salt reactor designs are considered to accommodate growing energy needs with minimal impact on the environment. The development of the molten salt reactor class highly depends on understanding molten fluoride salt physicochemical …
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One-dimensional single phase natural circulation model of FLiNaK in Molten Salt Loop
… Salt Loop currently under development at University of Ontario Institute of Technology to investigate aging related degradation effects and thermal storage applications of FLiNaK. The model’s purpose is to help design the flow loop and future experiments. Generation IV reactors were compared …
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Specifics of forced-convection heat transfer in a vertical 7-element bundle cooled with upward flow of SuperCritical Water
Current Generation II/III/III+ Nuclear Power Plants (NPPs) are no longer economically competitive partially due to low thermal efficiencies. Six Generation IV NPP concepts were proposed having increased thermal efficiency, with Canada investigating the SuperCritical Water Reactor (SCWR) concept. …
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Helium-Air mixing in simulated reactor cavities of Very High Temperature Reactors
… and High Temperature Gas Reactors (HTGRs) are Generation IV gas reactors that promise to deliver high temperature process heat and efficient electricity for both industrial and commercial purposes. They have a high level of inherent passive safety making them a viable alternative to traditional …
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Metallurgical characterization of self catalytic structural materials for sulfuric acid decomposition
… of heat exchanger is a key component to hydrogen generation by the thermochemical sulfur-iodine water-splitting process, a future technology that promises efficient hydrogen production if coupled to a Generation IV nuclear reactor heat source. Characterization of each material was carried out in …
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The development of autocatalytic structural materials for use in the sulfur-iodine process for the production of hydrogen
… are generally greater than 8500C, several of the Generation IV nuclear reactor concepts are attractive thermal energy sources. However, the high temperature and corrosive reaction conditions of the cycle, involving reactions including the decomposition of H2SO4 at 400-9000C, present formidable …
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Study on linking a SuperCritical water-cooled nuclear reactor to a hydrogen production facility
… nuclear Reactor (SCWR) is one of six Generation-IV nuclear-reactor concepts currently being designed. It will operate at pressures of 25 MPa and temperatures up to 625°C. These operating conditions make a SuperCritical Water (SCW) Nuclear Power Plant (NPP) suitable to support …
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