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| Criterion |  Operations Barrier Analysis |  Systems Thinking Iceberg Model |  Operations Root Cause Analysis |  Operations Family Tree Analysis |
|---|---|---|---|---|
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. | 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. | When a problem keeps recurring and the cause stays unclear, the method exposes the underlying mechanism. It separates symptom, guess, and robust explanation from one another. | 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 | Medium | Low | Medium | Medium |
Timedifferent | 2-4 h | 30-60 min | 1-4 h | 2-4 h |
Participantsdifferent | 2-6 | 2-10 | 3-8 | 2-6 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Iceberg Worksheet, Pattern Notes, Intervention Ideas | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan | Family Tree Diagram, Pattern Notes, Systemic Measures |
Tags1 shared | Root causeSafetyIncident | Systems thinkingRoot causePatterns | Root causeProblem solvingQualityIncident | Root causePatternsIncidentSystemic |