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...

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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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creator	ENOMOTO MITSUHIRO OOTSUBO TOORU KURODA HIDEHIKO AMANAI HIDEFUMI SATO KATSUHIKO
description	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.
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subjects	MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC ORINFRASONIC WAVES MEASURING NUCLEAR ENGINEERING NUCLEAR PHYSICS NUCLEAR REACTORS PHYSICS TESTING
title	VIBRATION MEASURING APPARATUS FOR NUCLEAR REACTOR INTERNAL STRUCTURE AND VIBRATION MEASUREMENT METHOD THEREFOR
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