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 135 for “"Fuel Cycle"”.
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Sensitivity analysis of nuclear fuel cycle transitions
The present United States nuclear fuel cycle faces challenges that hinder the expansion of nuclear energy technology. The U.S. Department of Energy identified four classes of nuclear fuel cycle options the U.S could transition to, which would overcome these challenges and make nuclear energy …
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Fuel cycle transition simulation capabilities in CYCLUS
… for tools necessary to model complex nuclear fuel cycles (NFCs) and advanced reactor technologies. This thesis demonstrates the capability of CYCLUS , the agent-based fuel cycle simulator, to model, simulate, and analyze real-life fuel cycle transition scenarios. I introduce new methods and …
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Rethinking the light water reactor fuel cycle
The once through nuclear fuel cycle adopted by the majority of countries with operating commercial power reactors imposes a number of concerns. The radioactive waste created in the once through nuclear fuel cycle has to be isolated from the environment for thousands of years. In addition, plutonium …
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The fuel cycle economics of PWR extended burnup
Thesis: M.S., Massachusetts Institute of Technology, Department of Nuclear Engineering, 1986
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A long term perspective on the LWR fuel cycle
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 1985.
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Fuel cycle options for optimized recycling of nuclear fuel
… of transuranic inventories in spent nuclear fuel depends on both deployment of advanced reactors that can be loaded with recycled transuranics (TRU), and on availability of the facilities that separate and reprocess spent fuel. Three recycling strategies are explored in this study: (1) …
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A critique and simplification of nuclear fuel cycle economics calculations
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 1984.
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A decision analysis framework for the U.S. nuclear fuel cycle
… for analysis of strategies to evolve the nuclear fuel cycle which may be helpful in analyzing decision problems for similarly complex, long-lived technical infrastructure systems. The framework consists of a system dynamics simulation coupled with a decision analysis model. The system dynamics …
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LEU+ to HALEU nuclear fuel cycle transitions and dynamic reactor models
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2025-10-19 without embargo terms
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Simulation of the nuclear fuel cycle with recycling : options and outcomes
… CAFCA code to study the mass flow in the nuclear fuel cycle, and the impact of different options for advanced reactors and fuel recycling facilities on the accumulation of the transuranics (TRU) inventory. Several aspects of the nuclear fuel cycle are studied for the US and for Brazil. This …
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Sensitivity analysis and optimization of the nuclear fuel cycle : a systematic approach
… of the fissionable materials in the used fuel from today's light water reactors into advanced (fast) reactors would be implemented as soon as technically feasible in order to extend the nuclear fuel resources. More recently, arguments have been made for deployment of fast reactors in order …
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Sensitivity of economic performance of the nuclear fuel cycle to simulation modeling assumptions
Comparing different nuclear fuel cycles and assessing their implications require a fuel cycle simulation model as complete and realistic as possible. In this thesis, methodological implications of modeling choices are discussed in connection with development of the MIT fuel cycle simulation code …
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Determination of the proper operating range for the CAFCA IIB fuel cycle model
The fuel cycle simulation tool, CAFCA II was previously modified to produce the most recent version, CAFCA IIB. The code tracks the mass distribution of transuranics in the fuel cycle in one model and also projects costs for various fuel cycle schemes. The mass distribution model also shows the …
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Evaluation of alternative fuel cycle strategies for nuclear power generation in the 21st century
The deployment of fuel recycling through either CONFU (COmbined Non-Fertile and UO2 fuel) thermal watercooled reactors (LWRs) or fast ABR (Actinide Burner Reactor) reactors is compared to the Once-Through LWR reactor system in terms of accumulation of actinides over the next 100 years under the …
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Optimization of a seed and blanket thorium-uranium fuel cycle for pressurized water reactors
… which employs a thorium/uranium once through fuel cycle, is optimized for good economics, wide safety margins, minimal waste burden and high proliferation resistance. The focus is on the Whole Assembly Seed and Blanket (WASB) concept, in which the individual seed and blanket regions each …
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Impact of thorium based molten salt reactor on the closure of the nuclear fuel cycle
… reactor (LFTR) is a MSR concept based on thorium fuel cycle. LFTR uses liquid fluoride salts as a nuclear fuel. It uses <sup>232</sup>Th and <sup>233</sup>U as the fertile and fissile materials, respectively. Fluoride salt of these nuclides is dissolved in a mixed carrier salt of lithium and …
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Fuel Cycle Modeling Improvements and Multi-Tiered Recycling With A Sodium-Cooled Heterogeneous Innovative Burner Reactor
<p>Fast reactors containing heterogeneous minor actinide target rods are now being modeled. When studying transmutation in these rods, helium production from α-decay must be considered since helium is produced in substantial quantities. This research utilized an innovative method to calculate gas …
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LEU+ Fuel Cycle Investigation of the BWRX-300 Design Using Neutronic and Two-Phase Thermal Hydraulic Analyses
… water reactor (BWR) utilizing a typical direct cycle balance of plant (BOP); this reactor concept greatly reduces the complexity of earlier BWRs, has robust passive safety systems, and has vast operational experience due to the prevalence of BWR type reactors across the world. Part of this …
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Estimating the environmental costs of the hydro fuel cycle using life cycle assessment techniques and economic valuation
<p>A Life Cycle Assessment model, with an integrated impact assessment, is used to estimate average external economic damages from the hydro fuel cycle. Aggregated average damage assessments of the hydro fuel cycle are complementary to marginal and site specific assessments, and are useful for …
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Increasing proliferation resistance of sodium fast reactor fuel cycle through use of a nuclear resonance fluorescence detector
The proliferation resistance of a reprocessing facility can be improved by using a novel detection system that utilizes the nuclear resonance fluorescence (NRF) phenomenon to determine the isotopic composition of materials flowing through the plant. In an aqueous reprocessing facility, the waste …
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