G - Physics – 21 – C
Patent
G - Physics
21
C
G21C 17/00 (2006.01) G01M 3/24 (2006.01)
Patent
CA 2673710
Disclosed herein is an apparatus for detecting leakage of heavy water from a fuel channel in a heavy water reactor. The apparatus includes a signal collector equipped with a piezoelectric acoustic sensor and a high-frequency microphone acoustic sensor contacting an end fitting of a channel closure plug, a driver moving and contacting the signal collector to the end fitting of the channel closure plug, a control and power supply unit controlling the driver and supplies power to the driver and a signal amplifier, a signal amplifier amplifying the measured signal, and a signal analyzer processing and displaying the measured signal. The apparatus is engaged with a head of a fuelling machine and approaches, along with the fuelling machine, each channel closure plug to perform leakage examination. Since the apparatus uses a fuelling machine which is in use in a power plant to examine the fuel channel, and simultaneously measures acoustic signals from the inside and outside of the fuel channel, it is possible to quickly perform the examination, prevent the inspector from being exposed to the radiation, and to prevent heavy water from leaking from the channel closure plug of the fuel channel.
Lee Sang Guk
Park Jong Eun
Korea Electric Power Corporation
Oyen Wiggs Green & Mutala Llp
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