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| Criterion |  Operations Failure Mode and Effects Analysis |  Operations 8D Problem Solving |  Operations Ivy Lee Method |  Operations Kepner-Tregoe |
|---|---|---|---|---|
Purposedifferent | 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. | 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. | With a restless workday full of too many open items, the method creates radical simplicity. It directs attention to a short sequence instead of a broad, still-open field. | For a disturbance that's hard to pin down, the method cleanly separates problem, cause, and decision. It reduces mixing when symptoms allow several interpretations. |
Complexitydifferent | High | High | Low | High |
Timedifferent | 2-6 h | 1-6 Wochen | 5-10 min daily | 2-8 h |
Participantsdifferent | 3-10 | 4-10 | 1 | 2-8 |
Formatdifferent | Workshop | Workshop + async | Async | Workshop + async |
Outputdifferent | FMEA Table, Risk Priority, Mitigation Actions | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Daily Priority List, Completion Notes | Problem Analysis, Decision Analysis, Risk Plan |
Tagsno overlap | RiskQualityOperationsRoot cause | QualityProblem solvingRoot cause | PrioritizationProductivityExecution | Problem solvingRoot causeDecisionOperations |