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| Criterion |  Engineering Failure Scenario Analysis |  Operations Fishbone Diagram |  Operations Root Cause Analysis |
|---|---|---|---|
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. | When a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers. | When a problem keeps recurring and the cause stays unclear, the method exposes the underlying mechanism. It separates symptom, guess, and robust explanation from one another. |
Complexitydifferent | Medium | Low | Medium |
Timedifferent | 1-3 h | 30-60 min | 1-4 h |
Participantsdifferent | 3-8 | 2-8 | 3-8 |
Formatdifferent | Workshop | Workshop | Workshop + async |
Outputdifferent | Failure Scenarios, Risk Notes, Control Gaps, Test and Response Actions | Fishbone Diagram, Cause Categories, Investigation Backlog | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan |
Tagsno overlap | FailureResilienceRisk | Root causeQualityOperations | Root causeProblem solvingQualityIncident |
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