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 9 of 9 for “"Heavy water reactors"”.
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An evaluation of the net breeding capability of heterogeneously-fuelled pressure-tube heavy water reactors with the thorium fuel cycle
… for an alternative to uranium. The pressure tube heavy water reactor (PT-HWR) has for decades been considered capable of achieving net breeding on the thorium fuel cycle, but this capability has not been conclusively demonstrated. The goal of this work was to perform reactor physics modelling of …
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Evaluation of material attractiveness to non-state actors of various nuclear materials in Thorium fuel cycles
Thorium-based fuel cycles for advanced nuclear reactors have been explored to utilize thorium resources in nations where uranium is scarce, increase fissile material utilization, and enhance proliferation resistance. As a stepping stone, thorium-based fuels have been paired with pressure tube heavy …
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Special isotopes of the FUGEN nuclear reactor
… of interest in decommissioning similarly styled heavy water reactors. This research examines the quantity of the isotopes that are of interest to the decommissioning of both the FUGEN nuclear power plant in Japan and the Pickering nuclear power plant in Canada and makes a comparison between them. …
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Optimization of a GEM-based detector to measure tritium and discriminate against other radiation types
… its fleet of Canadian Deuterium Uranium (CANDU) heavy water reactors. Although it is a less penetrative radionuclide, tritium is shown to have a detrimental effect on the human body when ingested, inhaled or absorbed. GEM detectors have proven to be very useful in the detection of low energy …
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Investigation of a SPH-based sub-cell homogenization for PHWR using a multi-cell model
… that single-cell SPH applied to Pressurized Heavy Water Reactors (PHWR) yields virtually no improvement compared to single-cell standard homogenization. This work attempts to improve those results by accounting for neutron leakage across cell boundaries by performing SPH-based homogenization …
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Improved 3D modelling of CANDU reactors using transport-fitted diffusion coefficients
… behavior of the core in CANDU pressure tube type heavy water reactors with natural-uranium fuel, two levels of calculations are required. Initially, lattice-level transport calculations are carried out to obtain, with high detail and accuracy, the flux distribution inside the lattice cell and …
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Lattice Strain and Texture of Plastically Deformed Zircaloy-2 at 77K
… material for the reactor core in both light and heavy water reactors. The intergranular strains and texture greatly affect the mechanical properties of the material while in operation. Understanding the plastic deformation of Zircaloy-2 will improve on current plastic deformation models, …
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Investigation of sub-cell homogenization for PHWR lattice cells using superhomogenization factors
… neutronics calculations for Pressurized Heavy-Water Reactors (PHWRs) are usually performed in diffusion theory using an approximate core model, whereby only two energy groups are utilized and two-group neutronic properties (i.e. macroscopic cross sections and diffusion coefficients) are …
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Spatio-temporal probabilistic methodology to estimate location-specific loss-of-coolant accident frequencies for risk-informed analysis of nuclear power plants
… for the piping components of Pressurized Heavy Water Reactors (PHWR); however due to the underlying assumptions of the methodology, this study does not adequately provide explicit incorporation of physical factors associated with locations. The Spatio-Temporal probabilistic methodology is …