Relex Software Corporation

What is Event Tree Analysis?

An event tree analysis (ETA) is a visual representation of all the events which can occur in a system. As the number of events increases, the picture fans out like the branches of a tree.

Event trees can be used to analyze systems in which all components are continuously operating, or for systems in which some or all of the components are in standby mode - those that involve sequential operation logic and switching. The starting point (referred to as the initiating event) disrupts normal system operation. The event tree displays the sequences of events involving success and/or failure of the system components.

The goal of an event tree is to determine the probability of an event based on the outcomes of each event in the chronological sequence of events leading up to it. By analyzing all possible outcomes using event tree analysis, you can determine the percentage of outcomes which lead to the desired result.

Relex Fault Tree/Event Tree

Relex Fault Tree/Event Tree software enables you to conveniently create complete event trees and perform fast and accurate calculations. The event tree software can quickly compute the probability of all the possible outcomes defined in the event tree, as well as for the events leading up to them.

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