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 27 for “"proliferation resistance"”.
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Proliferation Resistance of Utilizing Enriched Reprocessed Uranium
… the roles of intrinsic and extrinsic barriers to proliferation through this path need a deeper analysis. Denaturing of a fissile material, such as U or Pu, is one of the intrinsic barriers that renders the fissile material less suitable and less attractive for nuclear explosive device (NED) but …
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Proliferation resistance of borosilicate glass as a host form for weapons-grade plutonium
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 1996.
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Analysis of the proliferation resistance of the modular pebble bed high temperature gas reactor
… system. This leads to an increased risk of proliferation because the fuel pebbles can be diverted while the plant is operating. In order to show that the MPBR dose not pose a proliferation risk the fuel content was determined for different burnups up to 94 MWD/kg. This data shows that the …
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An integrated methodology for quantitative assessment of proliferation resistance of advanced nuclear systems using probabilistic methods
Proliferation is the results of a competition between the proliferating country (proliferation) and the party to resist the proliferation efforts (safeguarder). An integrated evaluation methodology to evaluate proliferation resistance of nuclear energy systems is outlined and demonstrated focusing …
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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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Analyzing the proliferation resistance of advanced nuclear fuel cycles : in search of an assessment methodology for use in fuel cycle simulations
A methodology to assess proliferation resistance of advanced nuclear energy systems is investigated. The framework, based on Multi-Attribute Utility Theory (MAUT), is envisioned for use within early-stage fuel cycle simulations. Method assumptions and structure are explained, and reference …
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Anti-proliferation safeguard system for General Electric's PRISM reactor plant
The proliferation resistance of a nuclear power plant has become an increasingly important issue due to the political climate of nuclear power at the present. Any new power plant that is constructed must be proliferation resistant and meet international standards set by the International Atomic …
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Diversion scenarios in an aqueous reprocessing facility
… abide by heavily enforced safeguards to prevent proliferation. Nuclear fuel reprocessing facilities are designed to be proliferation-resistant and to use surveillance systems. While experience with small-scale reprocessing facilities has allowed for well understood safeguards, large-scale …
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Evaluation of material attractiveness to non-state actors of various nuclear materials in Thorium fuel cycles
… fissile material utilization, and enhance proliferation resistance. As a stepping stone, thorium-based fuels have been paired with pressure tube heavy water reactors because of their high neutron economy and online refueling capability. However, thorium fuel cycles have raised proliferation …
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Ssessment methodology for proliferation resistant fast breeder reactor
Due to perceived proliferation risks, current US fast reactor designs have avoided the use of uranium blankets. While reducing the amount of plutonium produced, this omission also restrains the reactor design space and has several disadvantages over blanketed cores. This study investigated many …
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Core design and reactor physics of a breed and burn gas-cooled fast reactor
… GenIV goals of sustainability, economics, and proliferation resistance by increasing fuel burnup without the need for spent fuel reprocessing, recycle, or reuse of any kind. The neutronic requirements for B&B are strict and require an ultra-hard neutron spectrum. Therefore, the GFR is ideally …
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Nuclear fuel cycles for mid-century development
… to uranium utilization, waste management, proliferation resistance, and economics. Potential for mid-century deployment was assessed based on these results. Once-through fuel cycles based on solid fuel thermal reactors are found to be the best candidates for mid-century deployment because …
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Design strategies for optimizing high burnup fuel in pressurized water reactors
… core power output and the search for increased proliferation resistance, achieving burnup in the 70 to 100 MWd/kg range has attracted considerable attention. However the implications of this initiative have not been fully explored; hence this work defines the practical issues for high-burnup PWR …
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Self-protection analysis of denatured thorium-plutonium fuel
… capabilities of this fuel type, for anti-proliferation purposes. In particular, there were two proliferation-resistance methods that were analyzed. First, this study examined the time-dependant dose-rate of the spent fuel caused by the decay of the isotope uranium-232, which releases a …
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Risk-informed design guidance for a Generation-IV gas-cooled fast reactor emergency core cooling system
… 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 considerations at the preliminary stage of …
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An analysis of international nuclear fuel supply options
… the development of the Material, Economics, and Proliferation Assessment Tool (MEPAT), and analysis of fuel cycle scenarios using the tool. Development of MEPAT is aimed for unrestricted distribution and therefore uses publicly available and open-source codes in its development when possible. …
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Micro-heterogeneous thorium based fuel concepts for pressurized water reactions
… of neutronics, thermal-hydraulics, and proliferation resistance. CASMO-4 is employed to model a fuel assembly consisting of a homogeneously fueled ThO2-UO2 lattice of conventional design. It is found that homogeneously mixed ThO2-UO2 fuel in general has better physics behavior than …
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A quantitative assessment of nuclear weapons proliferation risk utilizing probabilistic methods
… assessment is made of the nuclear weapons proliferation risk between various nuclear reactor/fuel cycle concepts using a probabilistic method. The work presented details quantified proliferation resistance metrics of a pressurized water reactor (PWR), a PWR utilizing thorium as a fertile …
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Rethinking the light water reactor fuel cycle
… of long lived radioactive waste, enhanced proliferation resistance, and improved utilization of natural resources. It is generally believed that dedicated advanced reactor systems have to be designed in order to perform the task of nuclear waste transmutation effectively. The development …
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Modeling special nuclear material diversion from a pyroprocessing facility
… reactor (LWR) and metallic fuels, and inherent proliferation resistance. However, unlike aqueous reprocessing plants, industrial pyroprocessing plants do not yet exist. Similar to safety-by-design in next-generation reactors, reprocessing facilities could be designed with safeguards in mind via …
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