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| Criterion |  Operations MORT Analysis |  Operations 5 Whys |  Knowledge Modeling NeOn Methodology |  Operations Barrier Analysis |
|---|---|---|---|---|
Purposedifferent | For a safety-relevant event or a system with high protection requirements, the method examines where controls failed. It exposes both technical and organizational gaps. | For a single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. | The NeOn Methodology structures ontology work as a controlled process with reuse, scenarios, and reviews. It is useful when ontologies should not emerge ad hoc but modularly and reusably. | 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. |
Complexitydifferent | High | Low | High | Medium |
Timedifferent | Mehrere Tage bis Wochen | 15-30 min | Mehrere Wochen bis Monate | 2-4 h |
Participantsdifferent | 2-6 | 2-6 | 2-10 | 2-6 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations | Root cause notes, Countermeasures | Ontology Requirements Specification, Reuse Plan, Ontology Modules, Evaluation Report | Barrier Inventory, Failure Analysis per Barrier, Action Backlog |
Tagsno overlap | Root causeSafetySystemicIncident | Root causeIncidentLeanProblem solving | OntologyMethodologyReuseSemanticEngineering | Root causeSafetyIncident |