METHOD FOR CHECKING CLEARANCE BETWEEN PROCESS CHANNEL AND GRAPHITE STACK OF HIGH-POWER PRESSURIZED-TUBE REACTOR

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, cha...

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Bibliographische Detailangaben
Hauptverfasser:	TROFIMOV A.I, VINOGRADOV S.A, TROFIMOV M.A
Format:	Patent
Sprache:	eng
Schlagworte:	MEASURING MEASURING ANGLES MEASURING AREAS MEASURING IRREGULARITIES OF SURFACES OR CONTOURS MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS NUCLEAR ENGINEERING NUCLEAR PHYSICS NUCLEAR REACTORS PHYSICS TESTING
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Beschreibung
Zusammenfassung:	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.