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| Criterion |  Operations Barrier Analysis |  Operations Fault Tree Analysis |  Operations Kepner-Tregoe |  Operations MORT 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. | 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. | For a disturbance that's hard to pin down, the method cleanly separates problem, cause, and decision. It reduces mixing when symptoms allow several interpretations. | 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 | High | High | High |
Timedifferent | 2-4 h | 2-6 h | 2-8 h | Mehrere Tage bis Wochen |
Participantsdifferent | 2-6 | 3-8 | 2-8 | 2-6 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Problem Analysis, Decision Analysis, Risk Plan | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations |
Tags1 shared | Root causeSafetyIncident | RiskRoot causeSafety | Problem solvingRoot causeDecisionOperations | Root causeSafetySystemicIncident |