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.
What are the responsibilities of a 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