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| Criterion |  Operations Standard Work Analysis |  Operations 8D Problem Solving |  Operations Gemba Walk |  Operations 5 Whys |
|---|---|---|---|---|
Purposedifferent | When the same task is done differently depending on the person, the method exposes the reliable core. It creates comparability without unnecessarily choking off needed latitude. | 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. | 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. | 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 | Low |
Timedifferent | 1-3 h | 1-6 Wochen | 30-120 min | 15-30 min |
Participantsdifferent | 2-6 | 4-10 | 2-6 | 2-6 |
Formatdifferent | Workshop | Workshop + async | Workshop | Workshop |
Outputdifferent | Standard Work Sheet, Deviation List, Improved Standard, Training Needs | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Observation Notes, Improvement Ideas | Root cause notes, Countermeasures |
Tagsno overlap | LeanProcessQuality | QualityProblem solvingRoot cause | LeanObservationProcessOperations | Root causeIncidentLeanProblem solving |