Table 1

Comparison of traditional and simplified scoring methods

TraditionalSimplified
Scoring failure attributes

  • Requires trained personnel to use

  • 10-point scales customised for process

    • Frequency: 1–10

    • Severity: 1–10

    • Safeguard: 1–10

  • Can be used with little training

  • General scales

    • Frequency: F1–F4

    • Severity: C0–C4

    • Safeguard: S1–S3

Ranking failuresFrequency×severity=Criticality Index
Frequency×severity×safeguard=risk priority number		Frequency, severity and safeguard matrix=high, medium or low risk
Resources used in this study45 labour hours

  • Customisation of scoring scales: 5 h

  • Scoring failures: 45 h

11 labour hours

  • Customisation of scoring scales: 1 h

  • Scoring failures: 10 h