Turns workflows, data, causes, and improvements into a tangible result by defining the top event, collecting direct causes, and deriving critical paths and measures.
Core question: Which logical combinations of basic events lead to the undesired top event, and which minimal cut sets are critical enough to trigger action?
Mapping toolMethod form: Mapping tool. Describes how this method is used in practice.HighComplexity: high. Estimates preparation, facilitation effort, and method confidence needed.Workshop + asyncFormat: workshop or async. Shows whether the method works in a workshop, asynchronously, or both.
2-6 h
3-8
Run sheet · visual · session plan
Details
OperationsCategory: Operations. Describes the method's domain of use.
A structured accident tree separates management controls, barriers, and events so serious incidents become auditable.
Core question: Which specific controls and which management oversight functions were involved in the incident, were effective, insufficient, or missing, and which systemic levers follow from this?
Analysis methodMethod form: Analysis method. Describes how this method is used in practice.HighComplexity: high. Estimates preparation, facilitation effort, and method confidence needed.Workshop + asyncFormat: workshop or async. Shows whether the method works in a workshop, asynchronously, or both.
Mehrere Tage bis Wochen
2-6
Run sheet · visual · session plan
Details
OperationsCategory: Operations. Describes the method's domain of use.
Hazards, targets, and failed barriers are mapped so controls can be strengthened at the point of exposure.
Core question: Which barriers were supposed to prevent the damage, which existed, functioned, and were effective enough, and which are missing or failed?
Analysis methodMethod form: Analysis method. Describes how this method is used in practice.MediumComplexity: medium. Estimates preparation, facilitation effort, and method confidence needed.Workshop + asyncFormat: workshop or async. Shows whether the method works in a workshop, asynchronously, or both.