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| Criterion |  Operations MORT Analysis |  Facilitation Dot Estimation |  Operations Barrier Analysis |  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. | When size or effort can only be estimated roughly, Dot Estimation condenses the group's experience into a quick range. It turns individual contributions into a visible selection. The result is captured as an Effort Heatmap, Risk Signals, and Discussion Targets. | For a risk that can only be managed through multiple layers of protection, the method examines the effectiveness of each barrier. It shows where safeguards are missing, too weak, or fail under real conditions. | 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 | Low | Medium | High |
Timedifferent | Mehrere Tage bis Wochen | 5-20 min | 2-4 h | 2-6 h |
Participantsdifferent | 2-6 | 3-20 | 2-6 | 3-8 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations | Effort Heatmap, Risk Signals, Discussion Targets | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions |
Tagsno overlap | Root causeSafetySystemicIncident | EstimationEffortRisk | Root causeSafetyIncident | RiskRoot causeSafety |