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| Criterion |  Operations Causal Factor Analysis |  Operations MORT Analysis |  Operations Root Cause Tree Analysis |  Operations Barrier Analysis |
|---|---|---|---|---|
Purposedifferent | 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. | For a problem with several suspected causes, the method builds a causal structure instead of a mere list. It makes visible how causes connect and where the strongest points of leverage lie. | 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. |
Complexitydifferent | High | High | Medium | Medium |
Timedifferent | 2-6 h | Mehrere Tage bis Wochen | 1-3 h | 2-4 h |
Participantsdifferent | 3-10 | 2-6 | 2-8 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations | Cause Tree, Evidence Notes, Countermeasures | Barrier Inventory, Failure Analysis per Barrier, Action Backlog |
Tags2 shared | CausalityIncidentRoot causeTimeline | Root causeSafetySystemicIncident | Root causeTreeIncidentQuality | Root causeSafetyIncident |