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| Criterion |  Engineering Failure Scenario Analysis |  Operations Fault Tree Analysis |  Decision Making Pre-Mortem |  Operations Failure Mode and Effects Analysis |
|---|---|---|---|---|
Purposedifferent | In critical processes, it is not enough to plan only for the normal case. Failure Scenario Analysis looks at the path into failure and shows which failures, chains, and control gaps cause the most damage. | 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. | 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 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. |
Complexitydifferent | Medium | High | Low | High |
Timedifferent | 1-3 h | 2-6 h | 20–45 min | 2-6 h |
Participantsdifferent | 3-8 | 3-8 | Small cross-functional group | 3-10 |
Formatdifferent | Workshop | Workshop + async | Workshop | Workshop |
Outputdifferent | Failure Scenarios, Risk Notes, Control Gaps, Test and Response Actions | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Risk list, Mitigation plan, Assumption log | FMEA Table, Risk Priority, Mitigation Actions |
Tags1 shared | FailureResilienceRisk | RiskRoot causeSafety | RiskDecisionFailurePlanning | RiskQualityOperationsRoot cause |