3. Build the event tree
3.1 Construction principle
A tree is built using inductive reasoning which, for each of the safety barriers put in place to reduce the intensity of the consequences, allows two cases to be studied:
The barrier fulfils its safety function.
The barrier does not fulfil its safety function.
In other words, for each of the mitigation barriers implemented, the following two questions must be answered:
What happens when the barrier "works"?
What happens when the barrier "doesn't work"?
An example of an event tree is shown in the figure "Structure of an event...
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Build the event tree
Describe the sequences of events to determine the nature of the events identified at the output of the tree.
Bibliography
Also in our database
Bibliography
Yves Mortureux — Fault, cause and event trees — SE 4050
Yves Mortureux — Dependability: risk management methods — BM 5008
Olivier Iddie — The bow tie: a method for quantifying major risk — SE 4055
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