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| Criterion |  Operations Fault Tree Analysis |  Facilitation 3-Circle Venn Diagram |  Facilitation Alignment Mapping |  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. | When three perspectives matter at the same time, a Three-Circle Venn Diagram shows the overlaps and remainders precisely. It makes visible where shared effect arises and where only a partial perspective applies. | When several people work toward one goal but hold different mental maps, Alignment Mapping makes the discrepancies visible. It arranges goals, assumptions, and priorities so shared direction becomes verifiable. | 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 | Low | Medium | Medium |
Timedifferent | 2-6 h | 15-45 min | 1-2 h | 2-4 h |
Participantsdifferent | 3-8 | 2-8 | 4-12 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Venn Diagram, Overlap Notes, Differentiators | Alignment Map, Open Issues, Decision Questions | Barrier Inventory, Failure Analysis per Barrier, Action Backlog |
Tagsno overlap | RiskRoot causeSafety | ComparisonFacilitationAlignment | AlignmentStakeholdersStrategyFacilitation | Root causeSafetyIncident |