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Selected:Failure Mode and Effects AnalysisBarrier AnalysisFault Tree AnalysisRoot Cause Tree Analysis
| Criterion |  Operations Failure Mode and Effects Analysis |  Operations Barrier Analysis |  Operations Fault Tree Analysis |  Operations Root Cause Tree Analysis |
|---|---|---|---|---|
Purposedifferent | For a process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability. | 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 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. |
Complexitydifferent | High | Medium | High | Medium |
Timedifferent | 2-6 h | 2-4 h | 2-6 h | 1-3 h |
Participantsdifferent | 3-10 | 2-6 | 3-8 | 2-8 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop |
Outputdifferent | FMEA Table, Risk Priority, Mitigation Actions | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Cause Tree, Evidence Notes, Countermeasures |
Tags1 shared | RiskQualityOperationsRoot cause | Root causeSafetyIncident | RiskRoot causeSafety | Root causeTreeIncidentQuality |