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| Criterion |  Operations Barrier Analysis |  Operations Causal Factor Analysis |  Operations Change 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 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. | For a deviation after a change, the method isolates the influence of the altered condition. It narrows down which differences are relevant and which are just accompanying noise. |
Complexitydifferent | Medium | High | Medium |
Timedifferent | 2-4 h | 2-6 h | 45-120 min |
Participantsdifferent | 2-6 | 3-10 | 2-6 |
Formatsame | Workshop + async | Workshop + async | Workshop + async |
Outputdifferent | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions | Change Matrix, Cause Hypotheses, Validation Questions, Action List |
Tags1 shared | Root causeSafetyIncident | CausalityIncidentRoot causeTimeline | ChangeRoot causeTroubleshootingComparison |
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