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Reduced Enrichment for Research and Test Reactors
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Abstracts and Available Papers Presented at the
2004 International RERTR Meeting

An Investigation on the Irradiation Behavior of Atomized U-Mo/Al Dispersion Rod Fuels


J.M. Park, H.J. Ryu, Y.S. Lee, D.B. Lee, S.J. Oh, B.O. Yoo, Y.H. Jung, D.S. Sohn, and C.K. Kim
Korea Atomic Energy Research Institute 150, Dukjin-Dong, Yuseong-gu, Daejeon, 305-353, Korea


ABSTRACT
 

The second irradiation fuel experiment, KOMO-2, for the qualification test of atomized U-Mo dispersion rod fuels with U-loadings of 4-4.5 gU/cc at KAERI was finished after an irradiation up to 70 at% U235 peak burn-up and subjected to the IMEF(Irradiation material Examination Facility) for a post-irradiation analysis in order to understand the fuel irradiation performance of the U-Mo dispersion fuel. Current results for PIE of KOMO-2 revealed that the U-Mo/Al dispersion fuel rods exhibited a sound performance without any break-away swelling, but most of the fuel rods irradiated at a high linear power showed an extensive formation of the interaction phase between the U-Mo particle and the Al matrix. In this paper, the analysis of the PIE results, which focused on the diffusion related microstructures obtained from the optical and EPMA observations, will be presented in detail. And a thermal modeling will be carried out to calculate the temperature of the fuel rod during an irradiation.


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Last modified on July 29, 2008 11:33 +0200