Fault Tree Analysis
Tree-like diagram based upon the application of “and/or” logic used to identify alternative sequences of hardware faults and human errors that result in system failures or hazardous events.
NOTE When quantified, fault trees allow system-failure probability or frequency to be calculated.
Source: ISO 17776:2000, Petroleum and natural gas industries – Offshore production installations – Guidelines on tools and techniques for hazard identification and risk assessment. Global Standards