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Maintenance Types

Proper operations and maintenance (O&M) goes beyond repairing equipment after it breaks. Several maintenance strategies exist to prevent systems disrepair and degradation. A combination of the following can ensure an optimal blend of cost and life cycle effectiveness.

  • Reactive Maintenance: Follows a "run it until it breaks" strategy. No action or effort is taken to maintain equipment, prevent failure, or ensure life of the system even if actions are suggested by the manufacturer.

  • Preventive Maintenance: Refers to a series of actions performed on calendar time or machine run time schedules.

  • Predictive Maintenance: Strives to detect the onset of equipment degradation and address the problems as they are identified. Several predictive maintenance technologies exist.

  • Reliability-Centered Maintenance: Follows a process that addresses equipment conditions to determine maintenance requirements of any physical asset within its operating context.

Chapter 5 of the Federal Energy Management Program's O&M Best Practices Guide outlines these maintenance types in detail. The full guide is also available.