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| Criterion |  Operations Fault Tree Analysis |  Decision Making Pre-Mortem |  Operations Fishbone Diagram |  Operations ALPEN Method |
|---|---|---|---|---|
Purposedifferent | For a critical top event with several possible triggers, the method logically models failure paths. It makes visible which combinations of conditions can lead to damage. | In early initiatives with many uncertainties, planning quickly turns too optimistic. A pre-mortem makes the expected failure visible in advance and sharpens the view of causes, gaps, and countermeasures. | 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. | With an overloaded day full of too many tasks, a realistic picture of the day emerges. The method connects estimating, deciding, and buffer thinking so planning fits available energy and time. |
Complexitydifferent | High | Low | Low | Low |
Timedifferent | 2-6 h | 20–45 min | 30-60 min | 10-20 min daily |
Participantsdifferent | 3-8 | Small cross-functional group | 2-8 | 1 |
Formatdifferent | Workshop + async | Workshop | Workshop | Async |
Outputdifferent | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Risk list, Mitigation plan, Assumption log | Fishbone Diagram, Cause Categories, Investigation Backlog | Daily Plan, Time Estimates, Review Notes |
Tagsno overlap | RiskRoot causeSafety | RiskDecisionFailurePlanning | Root causeQualityOperations | PlanningTime managementProductivityOperations |