Definition(s)
Average Failure Frequency
w(t1,t2) , w T ( ), w
average value of the time-dependent failure frequency over a given time interval
Source: ISO/TR 12489:2013(E) Reliability modelling and calculation of safety systems. Global Standards
Oil & Gas Drilling Glossary - IADCLexicon.org
w(t1,t2) , w T ( ), w
average value of the time-dependent failure frequency over a given time interval
Source: ISO/TR 12489:2013(E) Reliability modelling and calculation of safety systems. Global Standards