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2 170 959

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Application

99122819/06, 1999-10-27

(24)

Start date

1999-10-27

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Actual filing date

1999-10-27

(45)

Published

2001-07-20

(72)

Inventor

Trofimov A.I.Vinogradov S.A.Trofimov M.A.

(73)

Holder

Obninskij Institut Atomnoj Ehnergetiki

METHOD FOR CHECKING CLEARANCE BETWEEN PROCESS CHANNEL AND GRAPHITE STACK OF HIGH-POWER PRESSURIZED-TUBE REACTOR Russian patent published in 2001 - IPC

Abstract RU 2170959 C1

FIELD: measurement technology; determining reactor life expectancy. SUBSTANCE: in order to determine life expectancy of high-power pressurized-tube reactor (type RBMK) clearance between process channel and graphite stack is measured by measuring metal temperature through channel thickness; to this end, changes in ultrasonic signal velocity as function of metal temperature variations are measured. EFFECT: enhanced measurement accuracy, reduced time required for taking measurements.

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RU 2 170 959 C1

Authors

Trofimov A.I.

Vinogradov S.A.

Trofimov M.A.

Dates

2001-07-20—Published

1999-10-27—Filed

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