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2 263 161

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IPC

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Application

2004107219/02, 2004-03-10

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Start date

2004-03-10

(22)

Actual filing date

2004-03-10

(45)

Published

2005-10-27

(72)

Inventor

Smirnova I.M.Kuchkina I.N.Ljadov G.D.Markov D.V.

(73)

Holder

Federal'Noe Gosudarstvennoe Unitarnoe Predprijatie Nauchnyj Tsentr Rossijskoj Federatsii Nauchno-Issledovatel'Skij Institut Atomnykh Reaktorov"

METHOD OF OBTAINING SAMPLES OF DEPOSIT PRODUCTS FROM SURFACE OF ZIRCONIUM FUEL ELEMENT JACKETS FOR PERFORMING QUANTITATIVE ANALYSIS Russian patent published in 2005 - IPC

Abstract RU 2263161 C1

FIELD: nuclear engineering; performing quantitative chemical analysis of deposit products from fuel element jackets.

SUBSTANCE: proposed method consists in bringing the fuel element jacket in contact with aqueous solution of mineral acids containing 60% of hydrochloric acid (1:1) and 20% of concentrated nitric acid. Solution is poured into cylindrical case made from heat-resistant and chemically stable pure material and is heated to temperature of (50-90)°C; fuel element or its section is placed into heated solution and is kept there till complete dissolving of deposits, after which solution is subjected to quantitative analysis for determination of chemical composition of deposits.

EFFECT: complete dissolving of deposits during minimum time without transfer of fuel element materials into solution.

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RU 2 263 161 C1

Authors

Smirnova I.M.

Kuchkina I.N.

Ljadov G.D.

Markov D.V.

Dates

2005-10-27—Published

2004-03-10—Filed