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Criterion	Operations Standard Work Analysis	Operations A3 Problem Solving	Operations 8D Problem Solving	Operations Failure Mode and Effects Analysis
Purposedifferent	When the same task is done differently depending on the person, the method exposes the reliable core. It creates comparability without unnecessarily choking off needed latitude.	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.	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.	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.
Complexitydifferent	Medium	Medium	High	High
Timedifferent	1-3 h	45-90 min	1-6 Wochen	2-6 h
Participantsdifferent	2-6	2-5	4-10	3-10
Formatdifferent	Workshop	Workshop + async	Workshop + async	Workshop
Outputdifferent	Standard Work Sheet, Deviation List, Improved Standard, Training Needs	A3 Report, Action Plan, Root Cause Analysis	8D Report, Containment Plan, Root Cause Evidence, Corrective Action Plan	FMEA Table, Risk Priority, Mitigation Actions
Tagsno overlap	LeanProcessQuality	LeanProblem solvingCoachingOperations	QualityProblem solvingRoot cause	RiskQualityOperationsRoot cause