Preventive maintenance aims to sustain or extend system lifespan through a set of actions that detect, preclude, or mitigate system degradation. These actions are based on either calendar time or machine run time.
Federal agencies can greatly extend equipment reliability and lifespan by expending the necessary resources for regular maintenance. In most cases, the system designer or manufacturer outlines regular maintenance under a preventive strategy.
In addition to increased reliability and lifespan, budget is saved over the life of the system. Preventive maintenance programs can save as much as 12% to 18% in equipment repair and replacement.
Other advantages of preventitive maintenance are:
- Flexibility allows for periodic adjusting of maintenance
- Reduced equipment or process failure.
Preventive maintenance is more labor intensive because more maintenance and monitoring are needed for system components. The strategy also leads to system downtime for routine maintenance, which may (or may not) be absolutely needed. In addition, the potential exists for incidental damage to components caused by this unneeded maintenance.
Another disadvantage of preventitive maintenance is that catastrophic failures are still possible.