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 Barrier Analysis |  Operations Gemba Walk |  Operations Fault Tree Analysis |  Operations A3 Problem Solving |
|---|---|---|---|---|
Purposedifferent | For a risk that can only be managed through multiple layers of protection, the method examines the effectiveness of each barrier. It shows where safeguards are missing, too weak, or fail under real conditions. | When there is uncertainty about the real course of a process, the method brings observation to the place where work happens. It combines perception, follow-up questions, and process knowledge so decisions rest on actual workflows instead of assumptions. | 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 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. |
Complexitydifferent | Medium | Low | High | Medium |
Timedifferent | 2-4 h | 30-120 min | 2-6 h | 45-90 min |
Participantsdifferent | 2-6 | 2-6 | 3-8 | 2-5 |
Formatdifferent | Workshop + async | Workshop | Workshop + async | Workshop + async |
Outputdifferent | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | Observation Notes, Improvement Ideas | Fault Tree, Critical Paths, Cause Hypotheses, Control Actions | A3 Report, Action Plan, Root Cause Analysis |
Tagsno overlap | Root causeSafetyIncident | LeanObservationProcessOperations | RiskRoot causeSafety | LeanProblem solvingCoachingOperations |