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FMEA
methodology
•
Identification of Failure modes
→
fault tree
→
Cause &
Effects (Worst case scenario)
•
Process control strategies in operation
→
Prevent causes,
detect failures, mitigate severity of the effects
•
Judge the effectiveness of the current process control
•
Failure modes sorting based on 3 indexes (ordinal scales):
- Occurrence (O)
- Severity (S)
- Detectability (D)
•
1 = low probability, low severity, high detectability
•
10 = high probability, high severity, low detectability