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| Criterion |  Operations Gemba Walk |  Operations Barrier Analysis |  Operations Kepner-Tregoe |  Operations MORT Analysis |
|---|---|---|---|---|
Purposedifferent | 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 risk that can only be managed through multiple layers of protection, the method examines the effectiveness of each barrier. It shows where safeguards are missing, too weak, or fail under real conditions. | 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. | 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. |
Complexitydifferent | Low | Medium | High | High |
Timedifferent | 30-120 min | 2-4 h | 2-8 h | Mehrere Tage bis Wochen |
Participantsdifferent | 2-6 | 2-6 | 2-8 | 2-6 |
Formatdifferent | Workshop | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Observation Notes, Improvement Ideas | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Problem Analysis, Decision Analysis, Risk Plan | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations |
Tagsno overlap | LeanObservationProcessOperations | Root causeSafetyIncident | Problem solvingRoot causeDecisionOperations | Root causeSafetySystemicIncident |