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 10 of 10 for “"Pyroprocessing"”.
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Modeling special nuclear material diversion from a pyroprocessing facility
… in which reprocessing reduces build up of UNF. Pyroprocessing is an attractive method for this transition for its capabilities separating both light water reactor (LWR) and metallic fuels, and inherent proliferation resistance. However, unlike aqueous reprocessing plants, industrial …
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IDENTIFICATION OF ELECTROREFINER AND CATHODE PROCESSING FAILURE MODES AND DETERMINATION OF SIGNATURE-SIGNIFICANCE FOR INTEGRATION INTO A SIGNATURE BASED SAFEGUARDS FRAMEWORK FOR PYROPROCESSING
… (NMA), faces many challenges when applied to pyroprocessing facilities. To aid in the safeguarding of these facilities, process monitoring (PM) is being investigated as a complementary method to NMA. PM takes general process data, such as density, current etc., and applies it to safeguards …
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Rotating Disk Electrode Design for Concentration Measurements in Flowing Molten Chloride Salts
… reduction extraction (PUREX) method or the pyroprocessing method. Since PUREX does not have the same level of built-in proliferation resistance as pyroprocessing, pyroprocessing is starting to be seen as a good alternative method. Pyroprocessing would take the spent nuclear fuel from a light …
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Investigation and modeling of uranium polarization for the electrorefining of Scrap U-MO foils
… the proliferation resistance at such reactors. Pyroprocessing has been selected to recover uranium from the scrap produced in the manufacture of this novel fuel type. Electrorefining, the main separation process of pyroprocessing, is modeled through a novel approach using corrosion theory. To …
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Reduction of Solid Uranium Dioxide in Calcium Salts
… goals. This study aims to develop a modified pyroprocessing method to prepare molten salt fuels for MSR from spent oxide nuclear fuel that was burned in light water reactors (LWRs). The process diagram illustrated as (1) spent fuel treatment, (2) chopping and voloxidation of spent oxide fuel, …
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Mathematical modeling and simulation of the performance of potassium glycinate in CO2 absorption in a packed-bed absorption column
… Cement Manufacturing with emphasis on the Pyroprocessing stage and finally Iron and Steel Production, where simulations were built for such production stages as the Raw material Sintering, Pelletization, Coke Production, Pig Iron Production, and the Basic Oxygen Furnace setup. The emission …
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The economics of alternative fuel cycles on sodium-cooled fast reactors and uncertainty and sensitivity analysis of cost estimates
… for the reprocessing alternatives, aqueous and pyroprocessing, are largely unknown, a comparison was made between the two based on several factors that could influence the cost: capital costs, waste streams, proliferation concerns, and technology readiness to inform the fuel choices for SFRs - …
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Processing parameters and kinetics of phosphate-based dechlorination for electrorefiner salt waste
Pyroprocessing generates a salt waste stream of fission products dissolved in alkali chloride salts. Iron phosphate (FePs) glasses have been identified as candidate materials due to the high waste loading, good chemical durability, and lower processing temperatures. Phosphate-based dechlorination …
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Studies of Used Fuel Fluorination and U Extraction Based on Molten Salt Technology for Advanced Molten Salt Fuel Fabrication
This study focuses on techniques that can be used to fuel next generation reactors. The first two studies are new techniques for recycling used nuclear fuel (UNF) and the third is a method of separating uranium (U) from lithium fluoride (LiF) and thorium fluoride (ThF4) salt also known as FLiTh for …
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Material Interactions with Molten LiCl-Li2O-Li
The electrolytic reduction of oxide nuclear fuel in a molten lithium chloride electrolyte containing 1-2wt% lithium oxide is a fuel cycle process that has been established on an engineering scale. The electrochemical window of lithium oxide must be exceeded in order to conduct this process at an …