Gebeurtenisboomanalyses

Gebeurtenisboomanalyses, often translated as Event Tree Analysis (ETA), is a graphical, inductive reasoning technique used in safety and reliability engineering to assess the potential consequences of an initiating event. It starts with a specific undesired event, such as equipment failure or human error, and systematically explores all possible sequences of subsequent events that can occur. These sequences are represented by branches on a tree-like diagram.

Each branch point in the event tree represents a safety function or barrier that can either succeed or fail in response to the preceding event. By assigning probabilities to the success or failure of each safety function, the analysis can determine the likelihood of different outcomes. These outcomes can range from no significant consequences to catastrophic failures.

The primary purpose of an event tree analysis is to identify potential accident scenarios, understand the effectiveness of safety systems, and quantify the probability of various consequences. It helps in identifying critical safety functions and potential weaknesses in safety systems. This analysis is often used in conjunction with other risk assessment methods, such as Fault Tree Analysis, which is a deductive technique. ETA is a valuable tool for improving safety by providing insights into how systems respond to disturbances and where improvements can be made.