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| Criterion |  Decision Making PERT Estimation |  Operations Barrier Analysis |  Operations 8D Problem Solving |  Operations Fault Tree Analysis |
|---|---|---|---|---|
Purposedifferent | On complex initiatives, a plain average tends to understate just how uncertain the outcome really is. It separates options, evaluation criteria, and open risks. The result is captured as a PERT Estimate, Expected Value, and Risk Notes. | 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 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. | For a critical top event with several possible triggers, the method logically models failure paths. It makes visible which combinations of conditions can lead to damage. |
Complexitydifferent | Medium | Medium | High | High |
Timedifferent | 15-45 min | 2-4 h | 1-6 Wochen | 2-6 h |
Participantsdifferent | 1-8 | 2-6 | 4-10 | 3-8 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | PERT Estimate, Expected Value, Risk Notes | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions |
Tagsno overlap | EstimationUncertaintyRisk | Root causeSafetyIncident | QualityProblem solvingRoot cause | RiskRoot causeSafety |