Planned Maintenance Includes which of the following?

• A. Preventive Maintenance
• B. Predictive Maintenance
• C. Reliability-centered Maintenance
• D. All of the above

Answer: (D)

Planned maintenance is about proactively organizing work to keep equipment reliable, using different strategies that address needs before they cause failures. Preventive maintenance fits this by performing regular, scheduled tasks such as lubrication, inspections, and replacements to reduce the likelihood of unexpected breakdowns. Predictive maintenance adds a condition-based layer, using data from monitoring tools (like vibration analysis or oil tests) to predict when a component will fail and schedule service just in time. Reliability-centered maintenance takes a broader, strategic view: it analyzes the criticality and failure modes of equipment to choose maintenance actions that preserve system function at the lowest overall cost. Because a comprehensive maintenance program typically blends these approaches, all of the above are included in planned maintenance.