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| Criterion |  Operations PDCA Cycle |  Operations MORT Analysis |  Operations 5 Whys |
|---|---|---|---|
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 safety-relevant event or a system with high protection requirements, the method examines where controls failed. It exposes both technical and organizational gaps. | 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 | Low | High | Low |
Timedifferent | 1 h bis mehrere Wochen | Mehrere Tage bis Wochen | 15-30 min |
Participantsdifferent | 1-8 | 2-6 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop |
Outputdifferent | PDCA Log, Experiment Plan, Learning Outcome, Standard Change | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations | Root cause notes, Countermeasures |
Tagsno overlap | Continuous improvementLeanExperiments | Root causeSafetySystemicIncident | Root causeIncidentLeanProblem solving |
Often compared together
Methods with strong topical overlap with the current selection, not yet in the comparison.
