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| Criterion |  Operations Barrier Analysis |  Operations 8D Problem Solving |  Innovation Design Charrette |  Operations Root Cause Analysis |
|---|---|---|---|---|
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. | 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. | In a tightly timed design process with many participants, the method pools several lines of thinking in a short time. It brings parallel design energy without letting the discussion tip into endless coordination. This quickly produces solid directions for architecture or space. | When a problem keeps recurring and the cause stays unclear, the method exposes the underlying mechanism. It separates symptom, guess, and robust explanation from one another. |
Complexitydifferent | Medium | High | Medium | Medium |
Timedifferent | 2-4 h | 1-6 Wochen | Halber Tag bis mehrere Tage | 1-4 h |
Participantsdifferent | 2-6 | 4-10 | 10-50 | 3-8 |
Formatdifferent | Workshop + async | Workshop + async | Workshop | Workshop + async |
Outputdifferent | Barrier Inventory, Failure Analysis per Barrier, Action Backlog | 8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan | Sketches and Concepts, Consolidated Solution Sketch, Prioritized Direction | Problem Statement, Cause Hypotheses, Confirmed Causes, Action Plan |
Tagsno overlap | Root causeSafetyIncident | QualityProblem solvingRoot cause | BrainstormingWorkshopCollaborationIdeation | Root causeProblem solvingQualityIncident |