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| Criterion |  Operations Failure Mode and Effects Analysis |  Operations DMAIC |  Operations Barrier Analysis |  Operations Fault Tree Analysis |
|---|---|---|---|---|
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 process problem with fluctuating performance, the method brings analysis and improvement into a disciplined sequence. It creates a framework in which numbers, causes, and control come together. | 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. | 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. |
Complexitydifferent | High | High | Medium | High |
Timedifferent | 2-6 h | 2-12 Wochen | 2-4 h | 2-6 h |
Participantsdifferent | 3-10 | 3-10 | 2-6 | 3-8 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | FMEA Table, Risk Priority, Mitigation Actions | Project Charter, Measurement Plan, Cause Analysis, Control Plan | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions |
Tagsno overlap | RiskQualityOperationsRoot cause | Continuous improvementQualityProcess improvement | Root causeSafetyIncident | RiskRoot causeSafety |