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

  • Heo, Taehoon (Center for Safety Measurement, Korea Research Institute of Standards and Science) ;
  • Cho, Seung Hyun (Center for Safety Measurement, Korea Research Institute of Standards and Science)
  • 투고 : 2016.04.12
  • 심사 : 2016.05.18
  • 발행 : 2016.12.25

초록

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 during the overhaul. Online thickness monitoring is necessary to avoid abrupt breakage due to wall thinning. To this end, a transducer that can withstand 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.

키워드

참고문헌

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피인용 문헌

  1. Research and Implementation of a 1800°C Sapphire Ultrasonic Thermometer vol.2017, pp.None, 2016, https://doi.org/10.1155/2017/9710763
  2. Noninvasive, In Situ Acoustic Diagnosis and Monitoring of Corrosion in Molten-Salt Systems vol.75, pp.10, 2016, https://doi.org/10.5006/3253
  3. An integrated approach forinteroperability of standards, condition monitoring methods, and research models used in the power generation sector vol.1166, pp.1, 2016, https://doi.org/10.1088/1757-899x/1166/1/012010