Magnetic Flux Leakage (MFL)

Magnetic Flux Leakage (MFL) is a nondestructive examination technique that uses electromagnetism to inspect for flaws or material degradation in steel structures. In the oil and gas industry, it is often used to search for flaws in piping and pipelines, as well as aboveground storage tank floors. MFL uses magnets to temporarily magnetize the structure. If there are flaws present, the magnetic field created will show distortions, signaling the presence of things like corrosion, pitting, and wall loss. 

 

Related Topics

Acoustic Emission Testing (AET) Advanced Ultrasonic Backscatter Technique (AUBT) Eddy Current Array (ECA) Electro Magnetic Acoustic Transducers (EMAT) Guided Wave Ultrasonics Infrared Thermography (IT) Infrared Thermometry Liquid Penetrant Examination (LPE) Magnetic Particle Testing (MPT) Meandering Winding Magnetometer Array (MWMA) Pulse Reflectometry Pulsed Eddy Current (PEC) Radiography Thermography Ultrasonics

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Articles
  • July/August 2015 Inspectioneering Journal
    By Robert Frater at Engineering & Inspection Services, LLC

    Refinery, petrochemical, and storage tank operators are responsible for properly cleaning facility tanks on a periodic maintenance basis, typically in 20 to 30 year increments. This article provides a suggested “checklist” of inspection activities to ensure safe and reliable operations after cleaning.

  • Blog
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  • Blog
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  • Blog
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  • September/October 2014 Inspectioneering Journal
    By John Tiratsoo at Pipelines International

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