Definition(s)
Hazardous Event Frequency
Φ(t)
failure frequency as 3.1.23 related to the hazardous event (or to the accident)
Source: ISO/TR 12489:2013(E) Reliability modelling and calculation of safety systems. Global Standards
Oil & Gas Drilling Glossary - IADCLexicon.org
Φ(t)
failure frequency as 3.1.23 related to the hazardous event (or to the accident)
Source: ISO/TR 12489:2013(E) Reliability modelling and calculation of safety systems. Global Standards