Organizations that learn how to fail intelligently outperform organizations that seek to minimize the frequency of failure.
"The intent is to fund risk-taking projects, understanding that with risk comes not only the potential for huge reward, but some frequency of failure.
The definition was based on the maximum undetected bias and ignored the frequency of failure, thus providing an upper bound.
This measures the potential of the design failure rather than the frequency of failure, the latter being measured by probability theory.
This requirement is closely related to their probabilistic performance measures which are either their average probability of dangerous failure on demand (PFDavg) or their average frequency of failure (PFH: Probability of Failure per Hour).
This article casts a new glance over some methods dedicated to the calculation of the likelihood (probability or frequency) of failure of systems and, in particular, safety-related systems working alone or in association with other protection layers.
Conventionally, the assessment and analysis of infrastructure performance is carried out using individual indicators such as punctuality, frequency of failure, track quality index, etc., separately.
Thus punctuality although correlated with the failure frequency is considered in the construction of the FCI, since it gives additional information on the consequence of failure on customer, which is not explained by the frequency of failure.
The former, (Q_{text{T}}), is the total failure frequency of the system caused by independent failure and CCF and the latter, (alpha_{k}), is a fraction of the total frequency of failure event including the failure of k components in the system.
In addition, in the field of traffic management, the total delay caused by infrastructure integrity is a function of the traffic volume and homogeneity, downtime (summation of active maintenance time and waiting time) and frequency of failure.
