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| Criterion |  Operations 8D Problem Solving |  Operations Kepner-Tregoe |  Operations Fishbone Diagram |
|---|---|---|---|
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 problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers. |
Complexitydifferent | High | High | Low |
Timedifferent | 1-6 Wochen | 2-8 h | 30-60 min |
Participantsdifferent | 4-10 | 2-8 | 2-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop |
Outputdifferent | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Problem Analysis, Decision Analysis, Risk Plan | Fishbone Diagram, Cause Categories, Investigation Backlog |
Tags1 shared | QualityProblem solvingRoot cause | Problem solvingRoot causeDecisionOperations | Root causeQualityOperations |
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