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| Criterion | ![]() Engineering Failure Scenario Analysis | ![]() Operations ALPEN Method | ![]() Operations Fault Tree Analysis | ![]() Operations Fishbone Diagram |
|---|---|---|---|---|
Purposedifferent | In critical processes, it is not enough to plan only for the normal case. Failure Scenario Analysis looks at the path into failure and shows which failures, chains, and control gaps cause the most damage. | 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. | 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. | 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. |
Complexitydifferent | Medium | Low | High | Low |
Timedifferent | 1-3 h | 10-20 min daily | 2-6 h | 30-60 min |
Participantsdifferent | 3-8 | 1 | 3-8 | 2-8 |
Formatdifferent | Workshop | Async | Workshop + async | Workshop |
Outputdifferent | Failure Scenarios, Risk Notes, Control Gaps, Test and Response Actions | Daily Plan, Time Estimates, Review Notes | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | Fishbone Diagram, Cause Categories, Investigation Backlog |
Tagsno overlap | FailureResilienceRisk | PlanningTime managementProductivityOperations | RiskRoot causeSafety | Root causeQualityOperations |



