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| Criterion |  Decision Making Pre-Mortem |  Operations Causal Factor Analysis |  Operations Fault Tree Analysis |  Operations Barrier Analysis |
|---|---|---|---|---|
Purposedifferent | In early initiatives with many uncertainties, planning quickly turns too optimistic. A pre-mortem makes the expected failure visible in advance and sharpens the view of causes, gaps, and countermeasures. | 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 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 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 | Low | High | High | Medium |
Timedifferent | 20–45 min | 2-6 h | 2-6 h | 2-4 h |
Participantsdifferent | Small cross-functional group | 3-10 | 3-8 | 2-6 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Risk list, Mitigation plan, Assumption log | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Barrier Inventory, Failure Analysis per Barrier, Action Backlog |
Tagsno overlap | RiskDecisionFailurePlanning | CausalityIncidentRoot causeTimeline | RiskRoot causeSafety | Root causeSafetyIncident |