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| Criterion |  Operations Fault Tree Analysis |  Knowledge Modeling Competency Questions |  Operations Barrier Analysis |
|---|---|---|---|
Purposedifferent | 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. | Competency Questions translate a domain model into concrete questions that it must be able to answer. The method keeps the model's scope clean and prevents pretty but useless structures. | 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 | Medium | Medium |
Timedifferent | 2-6 h | 2-4 h | 2-4 h |
Participantsdifferent | 3-8 | 2-8 | 2-6 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Competency Question Set, Required Concepts, Test Queries, Coverage Matrix | Barrier Inventory, Failure Analysis per Barrier, Action Backlog |
Tagsno overlap | RiskRoot causeSafety | OntologyKnowledge graphScopeRequirementsSemantic | Root causeSafetyIncident |
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Methods with strong topical overlap with the current selection, not yet in the comparison.
