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| Criterion |  Operations 8D Problem Solving |  Knowledge Modeling Concept Mapping |  Operations Fault Tree Analysis |  Operations Failure Mode and Effects Analysis |
|---|---|---|---|---|
Purposedifferent | For an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. | Concept Mapping arranges terms and relationships in a network that makes subject-matter connections tangible. It fits when a topic needs to be understood structurally rather than linearly. | 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. | 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 | High | Medium | High | High |
Timedifferent | 1-6 Wochen | 1-2 h | 2-6 h | 2-6 h |
Participantsdifferent | 4-10 | 1-8 | 3-8 | 3-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Concept Map, Relationship Labels, Knowledge Gaps | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | FMEA Table, Risk Priority, Mitigation Actions |
Tagsno overlap | QualityProblem solvingRoot cause | KnowledgeConceptsMappingSensemaking | RiskRoot causeSafety | RiskQualityOperationsRoot cause |