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| Criterion |  Operations Fault Tree Analysis |  Decision Making Wideband Delphi |  Operations Failure Mode and Effects 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. | A single opinion rarely holds up for planning when the future is genuinely uncertain. It separates options, evaluation criteria, and open risks. The result is captured as an Estimate Range, Assumption Log, and Expert Consensus Notes. | 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. |
Complexitysame | High | High | High |
Timedifferent | 2-6 h | 1-4 h or multiple rounds | 2-6 h |
Participantsdifferent | 3-8 | 4-12 Experten | 3-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Estimate Range, Assumption Log, Expert Consensus Notes | FMEA Table, Risk Priority, Mitigation Actions |
Tagsno overlap | RiskRoot causeSafety | EstimationExpertsForecasting | RiskQualityOperationsRoot cause |
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