ASNT MFL Level III – Refresher Course (Online)

The ASNT Magnetic Flux Leakage (MFL) Level III Refresher Course by NDTWorldwide® is designed for experienced Magnetic Flux Leakage Level II and Level III professionals who are preparing to renew or revalidate their ASNT MFL Level III certification. The course focuses on refreshing core technical knowledge and reinforcing Level III responsibilities in a clear, structured, and exam-focused manner.

This refresher program provides a targeted review of key Magnetic Flux Leakage topics, including MFL principles and theory, flux leakage behavior, DC and AC MFL techniques, equipment and materials, sensor and coil selection, test techniques, and standardization requirements. Emphasis is placed on understanding factors affecting test selection, coupling, magnetic field strength, and instrument performance.

The course also helps participants remain familiar with applicable MFL standards, procedures, interpretation methods, and defect characterization techniques. Through focused revision and practical understanding, candidates strengthen their confidence, technical judgment, and exam readiness, ensuring continued performance as competent and responsible ASNT MFL Level III professionals.

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ASNT MFL Level III – Refresher Course (Online)

Training Objective

ASNT MFL Level III – Refresher Course (Online)

    Principles / Theory

    • Understand the fundamental principles of magnetic flux leakage testing.
    • Learn flux leakage theory, including Förster and related theoretical models.
    • Understand the use of DC and AC magnetic flux leakage techniques.
    • Gain basic awareness of finite element methods used in MFL analysis.

    Equipment / Materials

    • Become familiar with MFL detectors, coils, and sensing elements.
    • Understand factors affecting the selection of sensors and readout systems.
    • Learn key instrument design considerations and performance limitations.
    • Understand how equipment configuration affects inspection reliability.

    Techniques / Standardization

    • Understand factors influencing the selection of MFL test techniques.
    • Learn the effects of coupling, magnetic field strength, and inspection conditions.
    • Compare different MFL techniques and their applications.
    • Understand standardization requirements to ensure repeatable and consistent testing.

    Interpretation / Evaluation

    • Understand basic principles of flaw detection using MFL signals.
    • Learn general interpretation methods for evaluating MFL indications.
    • Develop skills in defect characterization and process control evaluation.
    • Apply interpretation results to assess component condition and integrity.

Who Should Attend

This ASNT MFL Level III – Refresher Course is ideal for professionals seeking certification and technical advancement:

    • Aspiring ASNT MFL Level III candidates
    • NDT professionals – Managers, Engineers, Supervisors, Inspectors, Technicians
    • QA/QC & Welding professionals
    • Metallurgists, Mechanical & Production Engineers
    • Asset Integrity & RBI Inspectors
info

Note: No prerequisites to attend the course.
ASNT exam eligibility requires minimum education and experience, as per ASNT published guidelines.
A focused refresher for professionals aiming at ASNT MFL Level III success.

ASNT MFL Level III – Refresher Course – Syllabus

  • Flux leakage theory
  • Forster and other theories
  • Finite element methods
  • DC flux leakage and AC flux leakage
  • Detectors
  • Coils
  • Factors affecting choice of sensing elements
  • Read out selection
  • Instrument design considerations
  • Consideration affecting choice of test
  • Coupling
  • Field strength
  • Comparison of techniques
  • Standardization
  • General techniques
  • Flaw detection
  • Process control
  • General interpretations
  • Defect characterization

Books to be Studied (Main References)

Document Edition
1. The MFL Compendium: Articles on Magnetic Flux Leakage
        -
2. ASNT Questions & Answers Book: Magnetic Flux Leakage Testing (MFL)
        -
3. Nondestructive Testing Handbook, Vol. 5: Electromagnetic Testing (ET)
 3rd Edition
4. ASNT Questions & Answers Book: Electromagnetic Testing (ET)
 3rd Edition
5. Nondestructive Testing Handbook, Vol. 8: Magnetic Particle Testing (MT)
 3rd Edition
6. Nondestructive Testing Handbook, Vol. 8: Magnetic Particle Testing (MT)
 4th Edition
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ASNT MFL Level III Refresher Course Schedule

ASNT MFL Level III -Refresher Course (Feb 2026)

    • Course Dates: 2nd Feb 2026 to 28th Feb 2026 (20 Days)
    • Course Duration: 40 Hours
    • Course Mode: Online (Through Zoom)
    • Class timings: 8:30 PM to 10:30 PM IST

ASNT MFL Level III -Refresher Course (Feb 2026)

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