measures for maintainability and maintenance support related conceptsMessgrößen für Instandhaltbarkeits- und Instandhaltungsbereitschaftskonzepte

part of the maintenance time taken to perform corrective maintenance, including technical delays and logistic delays inherent in corrective maintenance

part of the active maintenance time taken to perform a preventive maintenance

part of the active preventive maintenance time taken to perform a preventive maintenance action

part of the active maintenance time taken to perform a corrective maintenance action

time interval between failure and detection of the resulting fault

delay to maintenance action incurred for administrative reasons

delay, excluding administrative delay, incurred for the provision of resources needed for a maintenance action to proceed or continue

part of active corrective maintenance time taken to perform fault correction

delay incurred in performing auxiliary technical actions associated with, but not part of, the maintenance action

part of active maintenance time taken to complete function checkout

part of active corrective maintenance time taken to complete fault diagnosis

part of active corrective maintenance time taken to complete fault localization

part of active corrective maintenance time taken to complete repair action

limit, if it exists, of the quotient of the conditional probability that the repair is completed within time interval (t, t + Δt) and Δt, when Δt tends to zero, given that the repair started at t = 0 and had not been completed before time t

expectation of the repair time

expectation of the active corrective maintenance time

expectation of the time to restoration

proportion of faults that can be detected, under given conditions

proportion of detected faults that can be successfully corrected

expectation of the administrative delay

expectation of the logistic delay

probability that a given maintenance action, performed under stated conditions and using specified procedures and resources, can be completed within the time interval (t1, t2) given that the action started at t = 0

duration of maintenance, including active maintenance time, and technical and logistic delays incurred, for a given maintenance action

sum of the durations of time spent by individual persons to carry out a specified maintenance action

duration of a maintenance action, excluding logistic delay

part of the maintenance time taken to perform preventive maintenance, including technical delays and logistic delays inherent in preventive maintenance

time interval, from the instant of failure, until restoration