This is the second briefing note to describe a specific risk assessment technique, Event Tree Analysis - ETA. It must be emphasised that this brief treatment is intended to be illustrative rather than definitive.
Event tree analysis is based on binary logic, in which an event either has or has not happened or a component has or has not failed. It is valuable in analysing the consequences arising from a failure or undesired event.
Quantified Risk Assessment Techniques (Part 1) discussed Failure Modes and Effects Analysis (FMEA).