Vibration measuring apparatus for nuclear reactor internal structure and vibration measurement method therefor

Vibration measuring apparatus for nuclear reactor internal structure and vibration measurement method therefor

A vibration measuring apparatus for nuclear reactor internal structure includes a holder which has an opening contact on a surface of a pressure vessel of a nuclear reactor; a vibrator accommodated in the holder so as to transmit or receive an ultrasonic wave; a couplant with which the holder is fil...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ENOMOTO MITSUHIRO, OOTSUBO TOORU, KURODA HIDEHIKO, AMANAI HIDEFUMI, SATO KATSUHIKO
Format: Patent
Sprache:eng
Schlagworte:
MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC ORINFRASONIC WAVES
MEASURING
NUCLEAR ENGINEERING
NUCLEAR PHYSICS
NUCLEAR REACTORS
PHYSICS
TESTING
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Beschreibung
Zusammenfassung:A vibration measuring apparatus for nuclear reactor internal structure includes a holder which has an opening contact on a surface of a pressure vessel of a nuclear reactor; a vibrator accommodated in the holder so as to transmit or receive an ultrasonic wave; a couplant with which the holder is filled up; and, a bias component applies a biasing force to the vibrator in the direction of the opening; The couplant is a solid state of metal material at normal temperature and change to liquid stage by heat transfer from the pressure vessel.