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| Criterion |  Operations A3 Problem Solving |  Engineering Hypothesis-Driven Troubleshooting |  Operations Barrier Analysis |
|---|---|---|---|
Purposedifferent | 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. | When systems fail unexpectedly, spontaneous attempts often produce more noise than insight. Hypothesis-driven Troubleshooting translates symptoms into testable assumptions and makes troubleshooting learnable. | 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. |
Complexitysame | Medium | Medium | Medium |
Timedifferent | 45-90 min | 30-240 min | 2-4 h |
Participantsdifferent | 2-5 | 1-6 | 2-6 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | A3 Report, Action Plan, Root Cause Analysis | Hypothesis Log, Test Plan, Evidence Notes, Diagnosis Summary | Barrier Inventory, Failure Analysis per Barrier, Action Backlog |
Tagsno overlap | LeanProblem solvingCoachingOperations | TroubleshootingProblem solvingDiagnosis | Root causeSafetyIncident |
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