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| Criterion |  Operations Change Analysis |  Systems Thinking Iceberg Model |  Operations Barrier Analysis |  Operations MORT Analysis |
|---|---|---|---|---|
Purposedifferent | For a deviation after a change, the method isolates the influence of the altered condition. It narrows down which differences are relevant and which are just accompanying noise. | 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 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 safety-relevant event or a system with high protection requirements, the method examines where controls failed. It exposes both technical and organizational gaps. |
Complexitydifferent | Medium | Low | Medium | High |
Timedifferent | 45-120 min | 30-60 min | 2-4 h | Mehrere Tage bis Wochen |
Participantsdifferent | 2-6 | 2-10 | 2-6 | 2-6 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Change Matrix, Cause Hypotheses, Validation Questions, Action List | Iceberg Worksheet, Pattern Notes, Intervention Ideas | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations |
Tags1 shared | ChangeRoot causeTroubleshootingComparison | Systems thinkingRoot causePatterns | Root causeSafetyIncident | Root causeSafetySystemicIncident |