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Selected:Failure Scenario AnalysisCausal Factor AnalysisFailure Mode and Effects AnalysisRoot Cause Tree Analysis
| Criterion |  Engineering Failure Scenario Analysis |  Operations Causal Factor Analysis |  Operations Failure Mode and Effects Analysis |  Operations Root Cause Tree 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. | For an event with a complicated course, the method breaks down the contributing factors along the timeline. It shows how conditions, decisions, and reactions together produce a course of events. | For a process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability. | For a problem with several suspected causes, the method builds a causal structure instead of a mere list. It makes visible how causes connect and where the strongest points of leverage lie. |
Complexitydifferent | Medium | High | High | Medium |
Timedifferent | 1-3 h | 2-6 h | 2-6 h | 1-3 h |
Participantsdifferent | 3-8 | 3-10 | 3-10 | 2-8 |
Formatdifferent | Workshop | Workshop + async | Workshop | Workshop |
Outputdifferent | Failure Scenarios, Risk Notes, Control Gaps, Test and Response Actions | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions | FMEA Table, Risk Priority, Mitigation Actions | Cause Tree, Evidence Notes, Countermeasures |
Tagsno overlap | FailureResilienceRisk | CausalityIncidentRoot causeTimeline | RiskQualityOperationsRoot cause | Root causeTreeIncidentQuality |