View methods side by side.
Choose up to four methods. Add them using the search and share the comparison by copying its link.
| Criterion |  Operations Fault Tree Analysis |  Delivery Cost of Delay |  Operations 5 Whys |  Operations Kepner-Tregoe |
|---|---|---|---|---|
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. | 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 single, hard-to-explain deviation, the method exposes the causal chain behind the visible symptom. It keeps the cause open until a controllable condition emerges instead of a mere description. | 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 | 90-180 min | 15-30 min | 2-8 h |
Participantsdifferent | 3-8 | 3-8 | 2-6 | 2-8 |
Formatdifferent | Workshop + async | Workshop | Workshop | Workshop + async |
Outputdifferent | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | CoD Table, Prioritization Sequence | Root cause notes, Countermeasures | Problem Analysis, Decision Analysis, Risk Plan |
Tagsno overlap | RiskRoot causeSafety | PrioritizationDeliveryEconomicsDecision | Root causeIncidentLeanProblem solving | Problem solvingRoot causeDecisionOperations |