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| Criterion |  Operations ABC Analysis |  Operations Gemba Walk |  Engineering Fault Isolation |
|---|---|---|---|
Purposedifferent | With many similar objects of differing economic significance, the method prioritizes effort by effect. It separates what needs regular steering from what rarely needs attention. | When there is uncertainty about the real course of a process, the method brings observation to the place where work happens. It combines perception, follow-up questions, and process knowledge so decisions rest on actual workflows instead of assumptions. | In technical failures, the visible symptom often gets mixed up with the actual cause. Fault Isolation narrows the fault space and progressively reduces which part of the system is truly affected. |
Complexitydifferent | Low | Low | Medium |
Timedifferent | 30-60 min | 30-120 min | 30-180 min |
Participantsdifferent | 1-5 | 2-6 | 1-6 |
Formatdifferent | Async | Workshop | Workshop + async |
Outputdifferent | ABC Classification, Focus Rules, Control List | Observation Notes, Improvement Ideas | Fault Isolation Map, Test Log, Excluded Hypotheses, Narrowed Fault Area |
Tagsno overlap | PrioritizationOperationsPortfolio | LeanObservationProcessOperations | TroubleshootingDiagnosisEngineering |
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