The event tree: a risk analysis method

To carry out a risk analysis on a project, you need a method that allows you to precisely define all observable consequences. For this purpose, the event tree method based on the Ishikawa diagram, also known as the cause/effect diagram, is recognized as an efficient method.

The event tree is an inductive analysis method based on the creation of a tree structure that identifies all the observable consequences following an initiating event called a cause. This method is now essential for quantifying risks.

This sheet describes a simple, visual method, well suited to teamwork, for structuring the analysis of a problem and facilitating the identification of the various categories of causes at the root of the problem.