A novel optical fiber sensor is being developed to monitor the internal corrosion processes in the natural gas transmission pipelines. Water droplet detection and ionic strength monitoring have been experimentally demonstrated by using the proposed sensor. This fiber optic sensor provides a multifunctional platform for monitoring several major processes involved with internal corrosion, including water dropwise condensation, dissolution of corrosive gases, and corrosion product formation on the steel surface, as well as changes in environmental parameters such as temperature and stress in steel pipes. Furthermore, a distributed sensor interrogation system combining several spatially resolved demodulation schemes is proposed to determine the location of incipient corrosion events and produce distributed information about the potential for on-set of corrosion along the path of the optical fiber sensor.

Subject
Water, Sensors, Water droplets, Sodium chloride, Pipelines, Corrosion detection, Silica, Natural gas, Sodium chloride solution, Fibers, Internal corrosion, Potassium chloride, Electrolytes
Keywords:
corrosion, optical fiber sensor, water droplet, ionic strength, multi-parameter and spatially resolved sensing
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2018
Association for Materials Protection and Performance (AMPP)
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