Analysis of Maintained Systems

Maintained systems consist of components, some or all of which can be maintained. Similarly the assemblage of components is assumed maintainable. Maintenance comprises different types of actions designed to: 1.Monitor performance or conditions of components of systems2.Adjust and calibrate components or systems3.Perform preventative repairs4.Perform scheduled repairs5.Perform complete overhauls6.Perform casualty repairsFor the purpose of our analysis it is convenient to divide maintenance into a.Monitoring and calibration normally done without shutting down a system.b.Preventative repairs done intermittently but not necessarily scheduled.c.Scheduled repairs performed at preplanned intervals and involving planned maintenance actions.d.Overhauls which involve a complete systems repair and may include large-scale component replacement. Overhauls may or may not be scheduled. They can be performed as part of a plan or as a result of unexpected casualties.e.Casualty repairs are defined as repairs required to put a system or component back into operation after an unexpected breakdown.