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| Criterion |  Operations Barrier Analysis |  Operations Causal Factor Analysis |  Operations MORT Analysis |  Systems Thinking Current Reality Tree |
|---|---|---|---|---|
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 an event with a complicated course, the method breaks down the contributing factors along the timeline. It shows how conditions, decisions, and reactions together produce a course of events. | 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. | A Current Reality Tree condenses many symptoms into a few causal chains. The method makes visible which core problems drive several negative effects at once. |
Complexitydifferent | Medium | High | High | High |
Timedifferent | 2-4 h | 2-6 h | Mehrere Tage bis Wochen | 2-6 h |
Participantsdifferent | 2-6 | 3-10 | 2-6 | 3-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations | Current Reality Tree, Core Problems, Intervention Ideas |
Tags1 shared | Root causeSafetyIncident | CausalityIncidentRoot causeTimeline | Root causeSafetySystemicIncident | Systems thinkingRoot causeConstraintsCausality |