Create tree structure
Hazard studies: fault tree (ADR detailed risk analysis method)

A tree is built using deductive reasoning to transcribe the causal links between events whose occurrence leads to the appearance of a feared event. These links are represented by logic gates. For hazard study trees, the gates used are mainly "AND" and "OR" gates. A symbol (Tool 1 ) can be used to create a fault tree.

In the "Fault tree structure" figure :

• The AND gate is used to indicate that several conditions must be verified simultaneously at the gate's input for the event at the gate's output to...