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| Criterion |  Operations Barrier Analysis |  Operations Family Tree Analysis |  Operations MORT Analysis |  Systems Thinking Iceberg Model |
|---|---|---|---|---|
Purposedifferent | 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 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. | 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. | The Iceberg Model separates visible events from patterns, structures, and mental models. This turns a single observation into a deeper understanding of why a problem keeps recurring. |
Complexitydifferent | Medium | Medium | High | Low |
Timedifferent | 2-4 h | 2-4 h | Mehrere Tage bis Wochen | 30-60 min |
Participantsdifferent | 2-6 | 2-6 | 2-6 | 2-10 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Family Tree Diagram, Pattern Notes, Systemic Measures | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations | Iceberg Worksheet, Pattern Notes, Intervention Ideas |
Tags1 shared | Root causeSafetyIncident | Root causePatternsIncidentSystemic | Root causeSafetySystemicIncident | Systems thinkingRoot causePatterns |