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| Criterion |  Operations Change Analysis |  Operations Barrier Analysis |  Operations Fishbone Diagram |  Operations Failure Mode and Effects Analysis |
|---|---|---|---|---|
Purposedifferent | 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 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. | When a problem has several possible contributing factors, the method sorts causes by cause areas. It prevents an initial hunch from blocking the view of other plausible drivers. | For a process, product, or service with noticeable failure risks, the method assesses possible failure modes in advance. It directs attention to combinations of occurrence, effect, and detectability. |
Complexitydifferent | Medium | Medium | Low | High |
Timedifferent | 45-120 min | 2-4 h | 30-60 min | 2-6 h |
Participantsdifferent | 2-6 | 2-6 | 2-8 | 3-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop |
Outputdifferent | Change Matrix, Cause Hypotheses, Validation Questions, Action List | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Fishbone Diagram, Cause Categories, Investigation Backlog | FMEA Table, Risk Priority, Mitigation Actions |
Tags1 shared | ChangeRoot causeTroubleshootingComparison | Root causeSafetyIncident | Root causeQualityOperations | RiskQualityOperationsRoot cause |