Development of Leak Detection System Using High Temperature-Resistant Microphones

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This report describes the development and testing of a coolant leak detection system for an inlet feeder pipe of an advanced thermal reactor (ATR) using high temperature-resistant microphones. Such microphones must be resistant to both high temperatures and high radia- tion doses. Leakage sound characteristics, attenuation of the sound level in a heat insulating box for the inlet feeder pipes, and background noise were investigated using the experimental facility and the prototype ATR'FUGEN'. The optimum frequency ranges for the microphone were then determined based on the observed leakage sound and background noise. The ability of the microphone to discriminate between leaks and other burst-type noises was also investi- gated by statistical analyses. Finally, it was confirmed that the present method could detect a leak within a couple of seconds.

収録刊行物

  • Journal of nuclear science and technology  

    Journal of nuclear science and technology 32(3), 237-244, 1995-03-25 

    Atomic Energy Society of Japan

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各種コード

  • NII論文ID(NAID)
    10002072259
  • NII書誌ID(NCID)
    AA00703720
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    00223131
  • データ提供元
    CJP書誌  CJP引用  J-STAGE 
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