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| Criterion |  Operations MORT Analysis |  Operations Causal Factor Analysis |  Decision Making Assumption Surfacing |  Operations Fault Tree Analysis |
|---|---|---|---|---|
Purposedifferent | For a safety-relevant event or a system with high protection requirements, the method examines where controls failed. It exposes both technical and organizational gaps. | 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. | Plans often contain assumptions that were never openly stated and remain dangerous precisely because of that. Assumption Surfacing makes these silent premises visible and prioritizes which of them carry the initiative or could sink it. | For a critical top event with several possible triggers, the method logically models failure paths. It makes visible which combinations of conditions can lead to damage. |
Complexitydifferent | High | High | Low | High |
Timedifferent | Mehrere Tage bis Wochen | 2-6 h | 45-90 min | 2-6 h |
Participantsdifferent | 2-6 | 3-10 | 2-8 | 3-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions | Assumption List, Critical Assumptions, Learning Plan | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions |
Tagsno overlap | Root causeSafetySystemicIncident | CausalityIncidentRoot causeTimeline | AssumptionsRiskDecisionDiscovery | RiskRoot causeSafety |