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| Criterion |  Operations Barrier Analysis |  Operations 8D Problem Solving |  Operations Root Cause Analysis |  Operations Causal Factor Analysis |
|---|---|---|---|---|
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. | 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. | 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 event with a complicated course, the method breaks down the contributing factors along the timeline. It shows how conditions, decisions, and reactions together produce a course of events. |
Complexitydifferent | Medium | High | Medium | High |
Timedifferent | 2-4 h | 1-6 Wochen | 1-4 h | 2-6 h |
Participantsdifferent | 2-6 | 4-10 | 3-8 | 3-10 |
Formatsame | Workshop + async | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions |
Tags1 shared | Root causeSafetyIncident | QualityProblem solvingRoot cause | Root causeProblem solvingQualityIncident | CausalityIncidentRoot causeTimeline |