The dictionary defines maintenance as follows:
“The work of keeping something in proper condition; upkeep.”
This would imply that maintenance should be actions taken to prevent a device or component from failing or to repair normal equipment degradation experienced with the operation of the device to keep it in proper working order.
Reactive Maintenance :
Maintenance mode “ Run it Till it Breaks ”
No actions or efforts are taken to maintain the equipment as the designer originally intended to ensure design life is reached.
Preventive Maintenance :
Preventive maintenance can be defined as follows:
“Actions performed on a time- or machine-run-based schedule that detect, preclude, or mitigate degradation of a component or system with the aim of sustaining or extending its useful life through controlling degradation to an acceptable level. “
Predictive Maintenance :
Predictive maintenance can be defined as follows:
Measurements that detect the onset of system degradation (lower functional state), thereby allowing causal stressors to be eliminated or controlled prior to any significant deterioration in the component physical state. Results indicate current and future functional capability.
Reliability Centered Maintenance :
Reliability centered maintenance (RCM) magazine provides the following definition of RCM:
“A process used to determine the maintenance requirements of any physical asset in its operating context.”
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