Intermediate end plug assembly for segmented fuel rod and segmented fuel rod having the same

An intermediate end plug assembly for a segmented fuel rod can stably support the fuel rod to the end of its cycle even if an interval between the fuel rods becomes narrow due to application of a dual-cooled fuel rod, and reduce excess vibration induced by flows of interior and exterior channels of...

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Main Authors KIM JAE YONG, IN WANG KI, LEE YOUNG HO, SHIN CHANG HWAN, LEE KANG HEE, OH DONG SEOK, SONG KUN WOO, CHUN TAE HYUN, YOON KYUNG HO, KIM HYUNG KYU
Format Patent
LanguageEnglish
Published 27.08.2013
Subjects
NUCLEAR ENGINEERING
NUCLEAR PHYSICS
NUCLEAR REACTORS
PHYSICS
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Summary:An intermediate end plug assembly for a segmented fuel rod can stably support the fuel rod to the end of its cycle even if an interval between the fuel rods becomes narrow due to application of a dual-cooled fuel rod, and reduce excess vibration induced by flows of interior and exterior channels of the dual-cooled fuel rod for obtaining high burnup and output. To this end, the fuel rod has a segmented structure so as to make its length short. A lower intermediate end plug includes at least one channel hole, through which a coolant flows into an internal channel of the fuel rod, so that a possibility of causing departure from nuclear boiling ratio (DNBR) of the dual-cooled fuel rod is reduced.
Bibliography:Application Number: US20090420874