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| Criterion |  Operations ALPEN Method |  Operations Gemba Walk |  Operations Barrier Analysis |  Operations A3 Problem Solving |
|---|---|---|---|---|
Purposedifferent | With an overloaded day full of too many tasks, a realistic picture of the day emerges. The method connects estimating, deciding, and buffer thinking so planning fits available energy and time. | 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 complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. |
Complexitydifferent | Low | Low | Medium | Medium |
Timedifferent | 10-20 min daily | 30-120 min | 2-4 h | 45-90 min |
Participantsdifferent | 1 | 2-6 | 2-6 | 2-5 |
Formatdifferent | Async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Daily Plan, Time Estimates, Review Notes | Observation Notes, Improvement Ideas | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | A3 Report, Action Plan, Root Cause Analysis |
Tagsno overlap | PlanningTime managementProductivityOperations | LeanObservationProcessOperations | Root causeSafetyIncident | LeanProblem solvingCoachingOperations |