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Magnetic Flux Leakage (MFL) Testing

HomeMagnetic Flux Leakage (MFL) Testing

Magnetic Flux Leakage

MFL inspection technique that detects volumetric changes, Magnetic Flux Leakage Testing is facilitated by tank floor mapping utilizing today’s latest computerized equipment.

With MFL, a strong magnet induces a magnetic field in the material. On a corrosion spot, a leakage field will arise.

After the fairly quick MFL Inspection is complete, the suspect areas of the tank floor surface will be quantified by slower but more accurate Ultrasonic Testing.

Our MFL Equipment is one of a new generation of MFL systems designed for the inspection of bulk liquid storage tank floors.

The system takes advantage of the latest developments in magnet design to deliver enhanced performance on thicker floor plates 300mm.

MFL Testing is a widely used, NDT method for the detection of corrosion and pitting in steel structures.

MFL is often used for the integrity assessment of pipelines and storage tanks, but the principle can be applied to assets in any industrial sector.

Magnetic Flux Leakage (MFL) Testing

High Magnetization

High magnetization levels are required to differentiate corrosion from other pipeline features such as hard spots, stress, and strain variations and to minimize the effects of remanent magnetization and velocity.

Where there is internal or external metal loss, the MFL from the object.

Magnetic Flux Leakage (MFL) Testing

MFL Testing Device

In the MFL Testing device, a magnetic sensor is placed between the poles of a magnet yoke to record the leakage field by Hall-effect sensors.

Eddy current sensors integrated into the magnetic-flux sensors are used to improve the differentiation between internal and external defects.

Magnetic Flux Leakage Applications

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