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| Criterion |  Operations Kaizen Event |  Operations Fault Tree Analysis |  Operations 5 Whys |
|---|---|---|---|
Purposedifferent | For a tightly scoped process segment with noticeable waste, the method bundles shared energy for change. It suits situations that call for fast learning loops and visible adjustments. | 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 single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. |
Complexitydifferent | Medium | High | Low |
Timedifferent | 0.5-5 Tage | 2-6 h | 15-30 min |
Participantsdifferent | 4-10 | 3-8 | 2-6 |
Formatdifferent | Workshop | Workshop + async | Workshop |
Outputdifferent | Kaizen Charter, Waste List, Improvement Experiments, Standard Work Update | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Root cause notes, Countermeasures |
Tagsno overlap | LeanContinuous improvementOperations | RiskRoot causeSafety | Root causeIncidentLeanProblem solving |
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Methods with strong topical overlap with the current selection, not yet in the comparison.
