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| Criterion |  Operations Barrier Analysis |  Operations Causal Factor Analysis |  Delivery Cost of Delay |  Operations Family 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 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. | Helps clarify scope, order, and delivery flow in concrete terms. It makes work, constraints, and sequence manageable. The result is captured as a Cost of Delay table and prioritization sequence. | For a series of incidents with a similar pattern, the method arranges individual events as branches of a common origin. It makes visible which conditions keep recurring. |
Complexitydifferent | Medium | High | High | Medium |
Timedifferent | 2-4 h | 2-6 h | 90-180 min | 2-4 h |
Participantsdifferent | 2-6 | 3-10 | 3-8 | 2-6 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions | CoD Table, Prioritization Sequence | Family Tree Diagram, Pattern Notes, Systemic Measures |
Tagsno overlap | Root causeSafetyIncident | CausalityIncidentRoot causeTimeline | PrioritizationDeliveryEconomicsDecision | Root causePatternsIncidentSystemic |