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 5 Whys |  Operations Fault Tree Analysis |  Operations MORT Analysis |
|---|---|---|---|
Purposedifferent | 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 critical top event with several possible triggers, the method logically models failure paths. It makes visible which combinations of conditions can lead to damage. | For a safety-relevant event or a system with high protection requirements, the method examines where controls failed. It exposes both technical and organizational gaps. |
Complexitydifferent | Low | High | High |
Timedifferent | 15-30 min | 2-6 h | Mehrere Tage bis Wochen |
Participantsdifferent | 2-6 | 3-8 | 2-6 |
Formatdifferent | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Root cause notes, Countermeasures | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | MORT Worksheets, Findings per Branch, Corrective Actions, Systemic Recommendations |
Tags1 shared | Root causeIncidentLeanProblem solving | RiskRoot causeSafety | Root causeSafetySystemicIncident |
Often compared together
Methods with strong topical overlap with the current selection, not yet in the comparison.
