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Selected:A3 Problem SolvingCausal Factor Analysis8D Problem SolvingFailure Mode and Effects Analysis
| Criterion |  Operations A3 Problem Solving |  Operations Causal Factor Analysis |  Operations 8D Problem Solving |  Operations Failure Mode and Effects Analysis |
|---|---|---|---|---|
Purposedifferent | For a complex deviation with several people involved, the method bundles problem, analysis, and decision onto one page. It creates a shared working space where causes, countermeasures, and follow-up fit together. | 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. | For an acute quality or delivery problem, the method structures immediate protection and root cause work together. It keeps the situation stable while the actual cause is investigated cleanly. | 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 | High | High | High |
Timedifferent | 45-90 min | 2-6 h | 1-6 Wochen | 2-6 h |
Participantsdifferent | 2-5 | 3-10 | 4-10 | 3-10 |
Formatdifferent | Workshop + async | Workshop + async | Workshop + async | Workshop |
Outputdifferent | A3 Report, Action Plan, Root Cause Analysis | Event Timeline, Causal Factor Chart, Cause List, Corrective Actions | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | FMEA Table, Risk Priority, Mitigation Actions |
Tagsno overlap | LeanProblem solvingCoachingOperations | CausalityIncidentRoot causeTimeline | QualityProblem solvingRoot cause | RiskQualityOperationsRoot cause |