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2 153 202

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Application

98107072/06, 1998-04-14

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Start date

1998-04-14

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Actual filing date

1998-04-14

(45)

Published

2000-07-20

(72)

Inventor

Batuev V.I.Chapaev I.G.Bychikhin N.A.Rozhkov V.V.Iljaskin V.A.Filippov E.A.Luzin A.M.

(73)

Holder

Otkrytoe Aktsionernoe Obshchestvo Zavod Khimkontsentratov"

METHOD FOR TREATMENT OF ZIRCONIUM-CLAD FUEL ELEMENTS Russian patent published in 2000 - IPC

Abstract RU 2153202 C2

FIELD: nuclear reactors. SUBSTANCE: zirconium-clad fuel elements mainly used for reactors RBMK, VVER-1000, and VVER- 440 are heated in hot water to 70-90 C and subjected to at least four-fold sequential ultrasonic treatment in water heated to 70-90 C within magnetostriction transducers installed in pairs. Fuel elements are anodized in alkali solution at anodizing current of 9-18 A, voltage of 30-50 V and electrolyte temperature not over 40 C; upon anodizing, fuel elements are rinsed in demineralized water using at least two-fold sequential ultrasonic treatment in water within magnetostriction transducers and then dried out with dry air heated to 80-120 C. EFFECT: improved quality and yield of fuel elements. 6 cl, 2 dwg

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RU 2 153 202 C2

Authors

Batuev V.I.

Chapaev I.G.

Bychikhin N.A.

Rozhkov V.V.

Iljaskin V.A.

Filippov E.A.

Luzin A.M.

Dates

2000-07-20—Published

1998-04-14—Filed

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