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| Criterion |  Operations Fault Tree Analysis |  Systems Thinking Iceberg Model |  Operations MORT Analysis |
|---|---|---|---|
Purposedifferent | 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. | 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. | 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. |
Complexitydifferent | High | Low | High |
Timedifferent | 2-6 h | 30-60 min | Mehrere Tage bis Wochen |
Participantsdifferent | 3-8 | 2-10 | 2-6 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Iceberg Worksheet, Pattern Notes, Intervention Ideas | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations |
Tags1 shared | RiskRoot causeSafety | Systems thinkingRoot causePatterns | Root causeSafetySystemicIncident |
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