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| Criterion |  Operations Failure Mode and Effects Analysis |  Operations Fault Tree Analysis |  Decision Making Delphi Method |
|---|---|---|---|
Purposedifferent | 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. | 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 knowledge is distributed and direct dominance should be avoided, groups quickly fall under the sway of their opinion leaders. The Delphi Method gathers assessments iteratively and gradually brings expert judgments closer together. |
Complexitysame | High | High | High |
Timedifferent | 2-6 h | 2-6 h | 1-4 Wochen |
Participantsdifferent | 3-10 | 3-8 | 6-30 Experten |
Formatdifferent | Workshop | Workshop + async | Async |
Outputdifferent | FMEA Table, Risk Priority, Mitigation Actions | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Expert Forecast, Consensus Range, Assumption Notes |
Tagsno overlap | RiskQualityOperationsRoot cause | RiskRoot causeSafety | ForecastingExpertsDecisionStrategy |
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