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U.S. Department of Energy
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Thorium cycle hybrid reactor design study

Technical Report ·
DOI:https://doi.org/10.2172/5403849· OSTI ID:5403849
This report discusses the progress made on the study of thorium-uranium fuel cycles in a tokamak hybrid reactor and on cost improvement considerations such as the use of a bundle divertor for impurity control. The thorium fuel cycle offers the potential for greater proliferation resistance than the previously studied plutonium-uranium fuel cycle. The initial effort in the neutronic blanket analyses (1) evaluated alternative blanket arrangements to assess the /sup 233/U fissile fuel production capability of the hybrid, (2) determined tritium breeding capabilities of various blanket zone arrangements, (3) established that plutonium production can be controlled by design parameter selection to either breakeven or burnup /sup 239/Pu, and (4) calculated the associated thermal power plant output for each of the scenarios. It was concluded that the hybrid could produce 1 to 4 tonnes/yr of /sup 233/U with the various designs considered. Further study would be required to select an optimum design for a completely self-sufficient plant. A preliminary bundle divertor concept was completed and analyzed which showed an improved performance over previous concepts. Cost considerations are discussed, but overall plant cost analysis was not conducted since the study consisted of parametric analysis and subsystem design considerations.
Research Organization:
Westinghouse Electric Corp., Pittsburgh, PA (USA)
OSTI ID:
5403849
Report Number(s):
EPRI-ER-1195
Country of Publication:
United States
Language:
English