METHOD FOR MANUFACTURING NUCLEAR FUEL PELLET FOR FAST BREEDER REACTORS IN FAST BREEDER REACTOR CYCLE

PROBLEM TO BE SOLVED: To provide an improved method for manufacturing nuclear fuel pellets for a fast breeder reactor which is suitable for mass production. SOLUTION: The method comprises the step of mixing a plutonium nitrate solution and a uranyl nitrate solution supplied from a reprocessing syste...

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Main Authors OKITA TAKATOSHI, SUZUKI MASAHIRO, YOSHIMOTO MASAKAZU, KIHARA YOSHIYUKI, KURITA TSUTOMU, TAKEUCHI KENTARO, SUDO KATSUO, ISHII KATSUNORI, TAKANO TATSUO, KATO YOSHIYUKI, KASHIMURA MOTOAKI, KIMURA YUICHI, ISOMAE HIDEMI, HAGA TETSUYA, MAKINO TAKAYOSHI, YAMAMOTO TAKUMA
Format Patent
LanguageEnglish
Published 02.09.2010
Subjects
NUCLEAR ENGINEERING
NUCLEAR PHYSICS
NUCLEAR REACTORS
PHYSICS
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Summary:PROBLEM TO BE SOLVED: To provide an improved method for manufacturing nuclear fuel pellets for a fast breeder reactor which is suitable for mass production. SOLUTION: The method comprises the step of mixing a plutonium nitrate solution and a uranyl nitrate solution supplied from a reprocessing system and adjusting the ratio of Pu to U so that it can be a predetermined one, the step of the pelletization in the same container after transferring the mixed solution of Pu-U nitrate whose plutonium enrichment is adjusted to the container and denitrating the mixed solution by irradiating it with microwaves, the step of preparing MOX pelletized powder by roasting and reducing the pelletized powder, the step of molding the MOX pelletized powder into a predetermined shape of nuclear fuel pellets, and the step of sintering the molded nuclear fuel pellets and adjusting the oxygen-to-metal ratio. COPYRIGHT: (C)2010,JPO&INPIT
Bibliography:Application Number: JP20090035143