Hazard Analysis - Likelihood of Occurrence

Likelihood of Occurrence

Likelihood Definition
Probable
  • Qualitative: Anticipated to occur one or more times during the entire system/operational life of an item.
  • Quantitative: Probability of occurrence per operational hour is greater than
Remote
  • Qualitative: Unlikely to occur to each item during its total life. May occur several times in the life of an entire system or fleet.
  • Quantitative: Probability of occurrence per operational hour is less than, but greater than
Extremely Remote
  • Qualitative: Not anticipated to occur to each item during its total life. May occur a few times in the life of an entire system or fleet.
  • Quantitative: Probability of occurrence per operational hour is less than but greater than
Extremely Improbable
  • Qualitative: So unlikely that it is not anticipated to occur during the entire operational life of an entire system or fleet.
  • Quantitative: Probability of occurrence per operational hour is less than

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