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| Criterion |  Operations Barrier Analysis |  Operations Change Analysis |  Operations Root Cause Tree 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 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. | For a problem with several suspected causes, the method builds a causal structure instead of a mere list. It makes visible how causes connect and where the strongest points of leverage lie. |
Complexitysame | Medium | Medium | Medium |
Timedifferent | 2-4 h | 45-120 min | 1-3 h |
Participantsdifferent | 2-6 | 2-6 | 2-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop |
Outputdifferent | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Change Matrix, Cause Hypotheses, Validation Questions, Action List | Cause Tree, Evidence Notes, Countermeasures |
Tags1 shared | Root causeSafetyIncident | ChangeRoot causeTroubleshootingComparison | Root causeTreeIncidentQuality |
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