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Magnetic Internal Corrosion Detection Sensor for Exposed Oil Storage Tanks.

Ahmad Aljarah1, Nader Vahdati1, Haider Butt1

  • 1Department of Mechanical Engineering, Khalifa University of Science and Technology, SAN Campus, Abu Dhabi P.O. Box 127788, United Arab Emirates.

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Summary

This study introduces a novel magnetic sensor for detecting internal corrosion in oil storage tanks. The sensor offers continuous monitoring and improved detection range, enhancing safety in the oil and gas industry.

Keywords:
FEAcorrosion detection sensorelectromagnetic numerical analysisinternal corrosionoil storage tanks

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Area of Science:

  • Materials Science
  • Mechanical Engineering
  • Corrosion Engineering

Background:

  • Corrosion in oil and gas infrastructure poses significant risks to production and transportation.
  • Current inspection intervals (3-7 years) leave tanks vulnerable to undetected aggressive corrosion.
  • Accidents due to undetected corrosion impact the oil and gas industry significantly.

Purpose of the Study:

  • To develop a new internal corrosion detection sensor for oil storage tanks.
  • To leverage magnetic interactions for non-destructive corrosion assessment.
  • To provide a continuous monitoring solution, improving upon periodic inspections.

Main Methods:

  • Utilized Finite Element Analysis (FEA) to optimize sensor design based on magnetic interaction.
  • Investigated the attractive force between a rare-earth permanent magnet and steel.
  • Designed and experimentally tested a novel internal corrosion detection sensor.

Main Results:

  • The developed sensor effectively detects internal metal loss due to corrosion.
  • Achieved a detection range of approximately 8 mm within the internal surface thickness.
  • Demonstrated a more than two-fold improvement in detection range compared to previous designs.

Conclusions:

  • The proposed magnetic sensor offers a viable solution for detecting internal corrosion in oil storage tanks.
  • The sensor provides a continuous monitoring capability, enhancing safety and operational efficiency.
  • This technology represents a significant advancement over traditional, infrequent inspection methods.