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| Criterion |  Operations 8D Problem Solving |  Operations Kepner-Tregoe |  Innovation Lotus Blossom |  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. | For a disturbance that's hard to pin down, the method cleanly separates problem, cause, and decision. It reduces mixing when symptoms allow several interpretations. | When a central question feels too large, the method breaks it into neighboring topic fields with their own depth of ideation. It holds structure and openness at the same time, so adjacent perspectives don't get lost. This grows an idea space out of a core problem. | 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 | High | Low | High |
Timedifferent | 1-6 Wochen | 2-8 h | 45-90 min | 2-6 h |
Participantsdifferent | 4-10 | 2-8 | 3-10 | 3-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Problem Analysis, Decision Analysis, Risk Plan | Lotus Diagram, Idea Themes, Shortlist | FMEA Table, Risk Priority, Mitigation Actions |
Tagsno overlap | QualityProblem solvingRoot cause | Problem solvingRoot causeDecisionOperations | BrainstormingIdeationCreativityDivergenceWorkshop | RiskQualityOperationsRoot cause |