Continuous underground monitoring of gas leaks

Gamal E. Khalil, Fletcher Kimura, Alice Chin, Masoud Ghandehari, River Wan, Wayne Shinoki, Martin Gouterman, James B. Callis, Larry R. Dalton

Research output: Contribution to journalArticle

Abstract

A gas-leak-detection system was designed based on the concept of oxygen-level measurement. Optical fibers were produced with gas-permeable polymeric cladding material doped with oxygen-responsive porphyrin sensor molecules and subsequently interrogated via the evanescent field along the fiber length. Tests were performed with simulated methane-gas leaks in air and under dry and saturated sand. Results of sensor sensitivity, response time, and reversibility are presented.

Original languageEnglish (US)
Pages (from-to)119-130
Number of pages12
JournalResearch in Nondestructive Evaluation
Volume16
Issue number3
DOIs
StatePublished - Jul 2005

Keywords

  • Evanescent field
  • Gas pipeline
  • Health monitoring
  • Leak detection
  • Optical fiber sensors
  • Porphyrin

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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  • Cite this

    Khalil, G. E., Kimura, F., Chin, A., Ghandehari, M., Wan, R., Shinoki, W., Gouterman, M., Callis, J. B., & Dalton, L. R. (2005). Continuous underground monitoring of gas leaks. Research in Nondestructive Evaluation, 16(3), 119-130. https://doi.org/10.1080/09349840591008208