Metal Detection: Good Practice Guidelines

Typical Guidelines

1)   Prevention

• Training for maintenance and cleaning staff in metal detector basics
• Planned & controlled maintenance - possibly non production hours
• Regular inspection - for identification of potential contaminants
• Good housekeeping

2)   Sensitivity

• Identify "standards"
• Re evaluate standards when conditions change
• Maintain records
• Maximize sensitivity without compromising performance
• Implement security levels - passwords

3)   Testing

• Document & communicate - who & why
• Establish frequency
• Create test packs where relevant

4)   Rejected Product Handling

• Isolate & re screen potentially contaminated product on test failure
• Investigate source of contaminant - trained personnel, off line & within reasonable time
• On repeat detection's identify source of contaminant
• On multiple detections, stop production

5)   Record Keeping

• Commissioning & sensitivity details
• Test results
• Shift results - number of rejects
• Maintenance schedules
• Training