Vibration measuring apparatus for nuclear reactor internal structure and vibration measurement method therefor
US9285264B2 · kind B2 · utility
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6Claims
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Key dates
| Filing date | Jun 8, 2011 |
| Grant date | Mar 15, 2016 |
| Priority date | — |
| Expiry date | Nov 14, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02E30/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.