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| Criterion |  Operations PDCA Cycle |  Operations Fault Tree Analysis |  Operations 8D Problem Solving |
|---|---|---|---|
Purposedifferent | For an improvement that still has to prove itself in everyday work, the method runs it through small learning loops. It connects planning, checking, and standardization into a repeatable learning mode. | 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 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. |
Complexitydifferent | Low | High | High |
Timedifferent | 1 h bis mehrere Wochen | 2-6 h | 1-6 Wochen |
Participantsdifferent | 1-8 | 3-8 | 4-10 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | PDCA Log, Experiment Plan, Learning Outcome, Standard Change | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | Continuous improvementLeanExperiments | RiskRoot causeSafety | QualityProblem solvingRoot cause |
Often compared together
Methods with strong topical overlap with the current selection, not yet in the comparison.
