Failure, repair and replacement analysis of a navy subsystem: case study of a pump
Gaver, Donald P.
Jacobs, Patricia A.
Dudenhoeffer, Donald D.
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An age-replacement policy may be used to minimize the cost of replacement and repair of a system whose rate of repairable failures increases with age. In this paper we model the failure times before replacement of one such system- a pump used on a submarine- by a non-homogeneous Poisson process having log-linear hazard rate which is a function of age. Maximum likelihood is used to estimate model parameters. A renewal-reward process is used to obtain estimates of log-run average costs of age-replacement policies. It should be noted that the policy obtained does not recognize possible between-submarine differences but does acknowledge that noise from a submarine pump is not to be tolerated.
RightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
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