Incident cause levels: An integrated approach to the incident investigation

The paper describes general assumptions about the structure of safety management which constitute the background for root cause analysis. An integrated approach to the incident investigation is proposed based on the insight into the assumptions. The approach is integrated in three senses. First, it integrates our assumptions about structure of investigated process. Second, it integrates different classifications of causes and shows their interrelations. Third, it integrates two types of incident investigation method.