MANUFACTURING METHOD OF PELLETS OF NUCLEAR OXIDE FUEL Russian patent published in 2011 - IPC G21C3/62 

Abstract RU 2428757 C1

FIELD: power industry.

SUBSTANCE: manufacturing method of pellets of nuclear oxide fuel is implemented by formation of cylindrical core from powdered material. The latter contains dioxide of enriched uranium and alloying additives. Outer annular cover from UO2 and burnable absorber of neutrons are formed around powdered material. Then, the obtained workpiece is sintered in reducing medium. Cylindrical core is formed from powder of dioxide of enriched uranium, which contains implant from U3O8. To outer annular cover together with UO2 powder there introduced from natural or depleted uranium is burnable absorber of neutrons in the form of ABO3 connection, where A=Gd, Er, Th; B=Al, Mg, Ca.

EFFECT: invention allows increasing operability of fuel elements and efficiency of fuel use.

6 cl, 5 dwg, 2 ex, 2 tbl

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RU 2 428 757 C1

Authors

Baranov Vitalij Georgievich

Khlunov Aleksandr Vital'Evich

Kurina Irina Semenovna

Ivanov Aleksandr Viktorovich

Petrov Igor' Valentinovich

Tenishev Andrej Vadimovich

Timoshin Ignat Sergeevich

Dates

2011-09-10Published

2010-07-16Filed