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 20 of 86 for “"spent fuel"”.
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Non-Neutron Transmutation of Spent Fuel
… for 99% of the long-term radiotoxicity of spent nuclear fuel. With half-lives ranging from 100,000 to 10,000,000 years, LLFPs pose a significant obstacle to long-term high-level waste storage. Geologic repositories for nuclear waste must be functional for millions of years. This significant …
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Target Design and Optimizations for Spent Fuel Transmutation
… fission products (LLFPs) identified in nuclear spent fuel, which account for at least 99% of the long-term radiotoxicity once actinide recycling is completed. This thesis examines the feasibility of using proton beams to transmute LLFPs into shorterlived or stable isotopes. While long-term …
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Thermal analysis of dry spent fuel transportation and storage casks
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 1996.
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Dependence of transuranic content in spent fuel on fuel burnup
… demand for nuclear energy results in larger spent fuel volume, implementation of longer fuel cycles incorporating higher burnup are becoming common. Understanding the effect of higher burnup on the spent fuel composition and radioactive properties is essential to ensure that spent fuel …
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Seismic Analysis and Isolation Strategies for Spent Fuel Dry Storage Cask Systems
… into the long-term seismic safety of spent nuclear fuel dry storage casks (DSCs) and their internal fuel components. It underscores the critical need for robust containment of radioactive materials over extended operational periods to prevent damage and mitigate any potential releases. …
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Non-destructive inspection of spent fuel casks through 14.1 MeV neutron interrogation
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-05-01
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Evaluation of nuclear spent fuel dry storage casks and storage facility designs
… power station in Africa and it stores its spent nuclear fuel (SNF) onsite in the spent fuel pool (SFP). Additional aged SNF assemblies are stored in dry storage casks in a facility located on the KNPS site. This minor research dissertation aims at evaluating various dry storage cask found …
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Parametric studies of the criticality of radioactive spent fuel canisters in a tuff repository
… of water, and increased enrichment of the fuel. It was found that k{dollar}\sb{\rm eff}{dollar} was increased approximately 33% when the canister was completely flooded, however, the effect of tuff saturation was minimal. Also, different materials and canister thickness changed …
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Modeling multiphysics of traveling wave reactor spent fuel disposal in deep crystalline host rock
… investigation of a method to dispose of the spent fuel of 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 …
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The propagation of zirconium runaway oxidation of spent fuel cladding following loss of water during storage
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 1982.
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First Order Assessment of Heat Transfer due to the Loss of Inventory in a Spent Fuel Pool
… international interest in the behaviour of spent fuel subsequent to a complete loss of water inventory in a spent fuel pool (SFP). The study conducted in this dissertation serves as a starting point in gaining an understanding of the thermal hydraulics and associated heat transfer processes …
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COMSOL finite-element analysis : residual stress measurement of representative 304L/308L weld in spent fuel storage containers
The ultimate storage destination for spent nuclear fuel in the United States is currently undecided. Spent fuel will be stored indefinitely in dry cask storage systems typically located on-site at the reactor or at a dedicated independent spent fuel storage installation (ISFSI). Since these …
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Optimization of time and location dependent spent nuclear fuel storage capacity
In this study a linear spent fuel storage model is developed to identify cost-effective spent nuclear fuel storage strategies. The purpose of this model is to provide guidelines for the implementation of the optimal time-dependent spent fuel storage capacity expansion in view of the current …
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An optimal withdrawal policy for spent nuclear fuel from on-site storage
The need to extend light water reactor spent-fuel on-site storage requirements and the future need to relieve resulting stockpiles necessitates the determination of optimal spent-fuel-withdrawal patterns under various end-use scenarios. End-use scenarios include no-economic- return throwaway and …
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Optimization of DUPIC cycle environmental and economic performance
A study of the DUPIC (Direct Use of Spent PWR Fuel In CANDU) cycle was made to analyze cycle performance relative to that of PWR and CANDU fuel cycles in terms of uranium utilization and spent fuel production efficiency. The DUPIC cycle was found to be most efficient in terms of minimizing spent …
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Analysis by simulation of the disposition of nuclear fuel waste
… of the United States, the reprocessing of spent nuclear fuel was discontinued in 1977. Since current at-reactor storage capacity is based upon a nuclear fuel cycle which includes reprocessing, this halt in reprocessing is causing large quantities of non-storable spent fuel. Permanent …
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Allocation of spent nuclear fuel transport casks
The selection of the form of spent nuclear fuel disposition, currently under debate, will precipitate an immediate requirement for spent-fuel transport regardless of the disposition alternative chosen. In this study, a constrained transportation model of the spent fuel cask scheduling problem is …
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Determination of economic shelf life of spent nuclear fuel
… is to determine the constituents of value in spent nuclear fuel and integrate these results into an economic time dependent model of a spent fuel assembly. The value of the constituents in the spent fuel is balanced against the cost of the various nuclear fuel cycle services. BWR and …
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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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Spent Nuclear Fuel Disposal Liability Insurance (Environmental Economics)
… power when the risks of accidental releases of spent fuel radionuclides from a spent fuel disposal facility are considered. The analysis consists of two major parts. First, a theoretical economic model of the use of nuclear power including the risks associated with releases of radionuclides from …
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