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


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