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| Criterion |  Operations Barrier Analysis |  Operations Learning Review |  Operations Root Cause Analysis |  Operations 8D Problem Solving |
|---|---|---|---|---|
Purposedifferent | 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. | After a project phase with mixed results, the method makes learning from the individual case reusable. It connects events, decisions, and systemic conditions into robust insights. | When a problem keeps recurring and the cause stays unclear, the method exposes the underlying mechanism. It separates symptom, guess, and robust explanation from one another. | 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 | Medium | Medium | Medium | High |
Timedifferent | 2-4 h | 1-3 h | 1-4 h | 1-6 Wochen |
Participantsdifferent | 2-6 | 3-10 | 3-8 | 4-10 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Learning Review Notes, System Factors, Improvement Actions | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan |
Tagsno overlap | Root causeSafetyIncident | LearningRetrospectiveIncidentOperations | Root causeProblem solvingQualityIncident | QualityProblem solvingRoot cause |