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| Criterion |  Operations Failure Mode and Effects Analysis |  Operations Fishbone Diagram |  Systems Thinking CATWOE 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. | When a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers. | CATWOE structures a problem from six viewpoints and prevents too narrow a view of the situation. Different experiences of the system become comparably discussable this way. | 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 | Low | Medium | High |
Timedifferent | 2-6 h | 30-60 min | 45-90 min | 2-6 h |
Participantsdifferent | 3-10 | 2-8 | 3-8 | 3-8 |
Formatdifferent | Workshop | Workshop | Workshop + async | Workshop + async |
Outputdifferent | FMEA Table, Risk Priority, Mitigation Actions | Fishbone Diagram, Cause Categories, Investigation Backlog | CATWOE Canvas, Root Definition, Stakeholder Perspectives, Constraints | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions |
Tagsno overlap | RiskQualityOperationsRoot cause | Root causeQualityOperations | Systems thinkingFramingStakeholders | RiskRoot causeSafety |