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2 172 987

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Application

2000110800/06, 2000-05-04

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Start date

2000-05-04

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Actual filing date

2000-05-04

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Published

2001-08-27

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Inventor

Malovik V.V.Kalantyr' V.I.Petrov I.V.Kuznetsov A.I.Fedorova V.P.Goloveshkin A.V.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Zavod"

METHOD FOR METERING CONTENT OF URANIUM ISOTOPES IN NUCLEAR FUEL Russian patent published in 2001 - IPC

Abstract RU 2172987 C1

FIELD: nuclear technology; metering uranium content of fuel pellets based on uranium dioxide. SUBSTANCE: method involves pellet weighing, metering moisture content of pellets, and pellet calcination in oxygen-containing medium to convert uranium dioxide into uranium oxide. Upon repeated weighing of pellets for metering mass of uranium oxide uranium isotope mass proportion w(u) is calculated. Moisture content in lot of pellets is determined by hydrogen content using high-temperature gas extraction method in at least one pellet of lot which is not used in subsequent analyses. Calcination for final oxidation to obtain uranium oxide is made for time calculated from formula given in description of invention. EFFECT: reduced content of foreign impurities; reduced number of procedures; enhanced measurement accuracy. 4 cl

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RU 2 172 987 C1

Authors

Malovik V.V.

Kalantyr' V.I.

Petrov I.V.

Kuznetsov A.I.

Fedorova V.P.

Goloveshkin A.V.

Dates

2001-08-27—Published

2000-05-04—Filed

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