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| Criterion |  Engineering Failure Scenario Analysis |  Operations 5 Whys |
|---|---|---|
Purposedifferent | In critical processes, it is not enough to plan only for the normal case. Failure Scenario Analysis looks at the path into failure and shows which failures, chains, and control gaps cause the most damage. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. |
Complexitydifferent | Medium | Low |
Timedifferent | 1-3 h | 15-30 min |
Participantsdifferent | 3-8 | 2-6 |
Formatsame | Workshop | Workshop |
Outputdifferent | Failure Scenarios, Risk Notes, Control Gaps, Test and Response Actions | Root cause notes, Countermeasures |
Tagsno overlap | FailureResilienceRisk | Root causeIncidentLeanProblem solving |
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