Magnetic Flux Leakage (MFL)

Magnetic Flux Leakage (MFL)

Principle

Magnetic flux leakage methods provide asset owners with the information required to assess tank- life suitability. Magnetic flux leakage methods work by inducing a strong magnetic field, near saturation, within ferrous materials. When an area affected by corrosion or metallurgical change is traversed by the sensor head, a change in flux density is measured and depicted on a digital computer screen, alerting the operator in real time while also being recorded for post-analysis.

Applications

MFL is used to detect metal loss defects (such as corrosion) in a wide range of settings

Advantages

  • Speed: Scanning, data analysis and reporting in one quick workflow
  • Highest resolution on the market offering easy to understand C-scan imaging
  • High-probability of corrosion detection with defects down to 1 mm (0.04 in) identified
  • Simple in-service deployment: No couplant and minimal surface preparation required
  • Easy to operate with minimum training required
  • Flexible heads fit a full range of pipe and vessel sizes
  • Full data recording with adjustable reporting threshold feature