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One of two project reports: The other part is designated Part B: On-Campus Project / <p> Computer studies are made of a CANDU-PHW reactor core containing an annulus of enriched uranium around a central zone of natural uranium. For hybrid cores of this type with a maximum radial form factor, the uranium requirements, fuel costs, stability, and power peaking upon refuelling are investigated. It is found that these hybrid cores offer potential savings of 10% to 20% in fuel costs and uranium utilization compared to the present CANDU-PHW core, and are only slightly less stable. However, power peaking upon refuelling is a problem with these cores.</p> / Thesis / Master of Engineering (ME)

This thesis is focused to the economic analysis of the nuclear fuel strategy change at nuclear power plant Temelin, where the change to 18 months fuel cycle is considered. The introduction of theses is aimed to the identification of direct economic aspects for the financial analysis. Nuclear fuel strategy change affects operation of power plant as a whole and affects production of spent nuclear fuel. Therefore the economic analysis is needed for include all social costs of the change. The conclusion of thesis is aimed to the risk analysis of the nuclear fuel strategy change. Risk analysis is performed by Monte Carlo simulation.