Magnetic Flux Leakage Online Training
MFL Level I, Level II Online Training Course
Combined MFL Level I / II Online Only Training Course
- MFL Level I
- MFL Level II
- 28 Hour Course Length
- Meets Industry Standards
- Help From an ASNT Level III via Email or Phone
- Life Time Access To Online Material
- Give Us A Call Now To Learn More
- 218-851-8347
- moulton@nationalinspection.org
About Our Online Courses
At National Inspection Academy, we provide high-quality online training courses designed to help individuals and companies gain the skills needed for Non-Destructive Testing (NDT). Our online courses are self-paced, accessible from anywhere, and meet industry standards for training.
Why Choose Our Online Courses?
- Flexible Learning – Study at your own pace, anytime, anywhere.
- Industry-Aligned Curriculum – Our courses follow ASNT SNT-TC-1A and CP-189 guidelines.
- Expert Instruction – Learn from experienced ASNT Level III instructors.
- Affordable & Efficient – Get the training you need without travel expenses.
What is Magnetic Flux Leakage Testing?
Magnetic Flux Leakage Testing (MFL) is a nondestructive testing (NDT) method used to inspect ferromagnetic materials such as tubing, plates, wires, oilfield pipes, and pipelines. In the petrochemical industry, it is commonly used to check for corrosion on tank floors.
MFL works by introducing a strong magnetic field into the material using permanent magnets or electric coils. If there is a surface-breaking flaw, such as corrosion or thinning, the magnetic field bends or “leaks” at that spot. Sensors detect these leaks, allowing inspectors to locate problem areas.
MFL is especially useful for detecting general corrosion rather than small pits or cracks. In pipeline inspections, a device called a “smart pig” is used to scan the inside of the pipe. These smart pigs can perform several tests at once, but MFL is the most common method for finding internal and external corrosion. The leakage field is detected using special sensors, such as Hall effect probes or induction coils, to measure changes in the magnetic field.