General Considerations

1. All persons associated with magnetic flaw detection should be adequately trained to an agreed level appropriate to their responsibility and have adequate eyesight. BS EN ISO 9934-1 refers to BS EN ISO 9712 for personnel qualifications and certification. This document requires personnel to read Jaeger J1 or Times Roman N4.5 at a distance of no less than 30cm (300mm/0.3m) to test an operator’s vision.
2. It is necessary for operators and supervisors to observe the requirements of the Health and Safety at Work etc. Act 1974 and the COSHH Regulations; see Unit MT11.
3. Post cleaning may be necessary in circumstances where the magnetic particles or any background paint used, may be deleterious to the successful use of the component.