Thin-Plate-Type Embedded Ultrasonic Transducer Based on Magnetostriction for the Thickness Monitoring of the Secondary Piping System of a Nuclear Power Plant

Thin-Plate-Type Embedded Ultrasonic Transducer Based on Magnetostriction for the Thickness Monitoring of the Secondary Piping System of a Nuclear Power Plant

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Pipe wall thinning in the secondary piping system of a nuclear power plant is currently a major problem that typically affects the safety and reliability of the nuclear power plant directly.Regular in-service inspections are carried out to manage the piping system only here during the overhaul.Online thickness monitoring is necessary to avoid abrupt breakage due to wall thinning.

To this end, a transducer that can withstand galaxy harmony nc a high-temperature environment and should be installed under the insulation layer.We propose a thin plate type of embedded ultrasonic transducer based on magnetostriction.The transducer was designed and fabricated to measure the thickness of a pipe under a high-temperature condition.

A number of experimental results confirmed the validity of the present transducer.