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| Criterion |  Operations MORT Analysis |  Operations Fault Tree Analysis |  Decision Making Assumption Surfacing |  Operations Family 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 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. | 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 series of incidents with a similar pattern, the method arranges individual events as branches of a common origin. It makes visible which conditions keep recurring. |
Complexitydifferent | High | High | Low | Medium |
Timedifferent | Mehrere Tage bis Wochen | 2-6 h | 45-90 min | 2-4 h |
Participantsdifferent | 2-6 | 3-8 | 2-8 | 2-6 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Assumption List, Critical Assumptions, Learning Plan | Family Tree Diagram, Pattern Notes, Systemic Measures |
Tagsno overlap | Root causeSafetySystemicIncident | RiskRoot causeSafety | AssumptionsRiskDecisionDiscovery | Root causePatternsIncidentSystemic |