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| Criterion |  Operations 8D Problem Solving |  Operations Waste Analysis |  Operations Kepner-Tregoe |
|---|---|---|---|
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 process that keeps people busy but creates little value, the method exposes waste. It directs attention to unnecessary movement, waiting times, rework, and overdelivery. | 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. |
Complexitydifferent | High | Low | High |
Timedifferent | 1-6 Wochen | 45-120 min | 2-8 h |
Participantsdifferent | 4-10 | 2-8 | 2-8 |
Formatdifferent | Workshop + async | Workshop | Workshop + async |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Waste Map, Prioritized Waste, Improvement Backlog | Problem Analysis, Decision Analysis, Risk Plan |
Tagsno overlap | QualityProblem solvingRoot cause | WasteLeanProcess improvement | Problem solvingRoot causeDecisionOperations |
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