Design and application of MTR fuel assemblies in new proposed inverted mode

MTR fuel is one of the most used fuel types in research reactors. Loading high positive excess reactivity enables a research reactor to be in service for an extended period of time without refueling. This in turn ends up to asymmetric burn up distribution in axial direction. Minor modifications in p...

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Bibliographic Details
Published in:Nuclear engineering and design 2010-10, Vol.240 (10), p.2981-2987
Main Authors: Gharib, M., Arkani, M., Hossnirokh, A.
Format: Article
Language:English
Subjects:
Applied sciences
Controled nuclear fusion plants
Energy
Energy. Thermal use of fuels
Exact sciences and technology
Fission nuclear power plants
Fuels
Installations for energy generation and conversion: thermal and electrical energy
Nuclear fuels
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Summary:MTR fuel is one of the most used fuel types in research reactors. Loading high positive excess reactivity enables a research reactor to be in service for an extended period of time without refueling. This in turn ends up to asymmetric burn up distribution in axial direction. Minor modifications in present standard fuel assembly design allow use of each fuel assembly in dual directions along vertical axis. Thus, a smoother axial burn up distribution can be achieved. Detailed calculations showed a real improvement in neutron economy and extra positive reactivity is gained.
ISSN:0029-5493
1872-759X
DOI:10.1016/j.nucengdes.2010.05.044