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Rewetting characteristics of a wire-wrapped fuel rod

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堺 公明; 藤井 正; 堀 徹; 此村 守

Sakai, Takaaki; Fujii, Tadashi; Hori, Toru; Konomura, Mamoru

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Rewetting velocity was measured for a wire-wrapped fuel rod to evaluate cooling ability for spent fuel direct transportation to a storage water pool in a Fast Breeder Reactor (FBR) future plant. In case of bottom flooding, the rewetting velocity of the wire-wrapped rod depended to the pressure loss of the flow system. The velocity was able to be correlated by experimental parameters. In case of top flooding, the rewetting velocity was reduced with increase its outlet flow restriction. The maximum time to rewet the heated length was 1500 sec. However, the maximum rod temperature did not increase during the rewetting time. In conclusion, it is prospective for cooling ability of the spent fuel direct transportation system in the FBR plant.

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