ADVANCED NDT (LEVEL I & II)

What is ACFM Testing?

Alternating Current Field Measurement or ACFM is an electromagnetic inspection technique that introduces an alternating current into the surface of the component to detect surface-breaking cracks.

The presence of a crack disturbs the electromagnetic field and the return signal is instantaneously converted by advanced mathematical techniques, so that the operator is alerted to the presence of a defect. Immediate defect sizing and recording is a major benefit compared to alternative NDT methods.

ndt training in chennai

What are the responsibilities of an individual who is certified to ACFM Level 2?

An individual certified to ACFM Level 2 has demonstrated competence to perform NDT according to ACFM procedures. Within the scope of the competence defined on the certificate, Level 2 personnel may be authorised by the employer to:

  • Select the ACFM technique for the test method to be used
  • Define the limitations of application of the testing method
  • Translate NDT codes, standards, specifications and procedures into NDT instructions adapted to the actual working conditions
  • Set up and verify equipment settings
  • Perform and supervise tests
  • Interpret and evaluate results according to applicable standards, codes, specifications or procedures
  • Prepare ACFM written instructions
  • Carry out and supervise all tasks at or below level 2
  • Provide guidance for personnel at or below level 2
  • Report the results of ACFM test

ACFM Level 2 training at IEQS GROUP covers the following

TRAINING

80 hrs of ACFM Level II training covers the following:

General Theory

  • History of electromagnetic testing
  • Terms and definitions used in electromagnetic testing
  • General principles of the ACFM technique
  • Electrical Theory. Further principles of AC theory
  • Equipment – ACFM equipment design and construction

Sector Specific Theory

  • Introduction to the range of available ACFM techniques
  • Types of equipment: Equipment selection and preparation
  • The effect of the ACFM test on the material to be tested
  • Preparation for testing
  • Carrying out the test
  • Post-test procedures reporting
  • Codes, standards and specifications
  • Briefing of remote probe operator
  • Preparation for testing
  • Surface preparation
  • ACFM techniques
  • Safety precautions, fire hazards, electrical safety
  • Conduct of test
  • Test procedure
  • Factors affecting the sensitivity of the ACFM technique
  • Probe and instrument set-up
  • Computer file handling
  • Detectability of defects. General advantages and limitations of the test method with regard to defect detection.
  • Characterisation of defects. Difficulties and limitations
  • Interpretation and reporting
  • Types of discontinuity and their identification
  • Responsibilities for reporting
  • Welding product technology
  • How defects are formed