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 a proactive approach that organizes maintenance activities in advance and uses different strategies to keep equipment reliable. It includes preventive maintenance, which is the regular, scheduled care to prevent failures; predictive maintenance, which relies on monitoring data to forecast when a component will fail and plan maintenance just in time; and reliability-centered maintenance, a structured way to decide what maintenance actions are truly needed by analyzing how equipment can fail, what those failures cost, and how to protect system function. Because a solid maintenance plan often combines these approaches to balance reliability and cost, all of the above are included in planned maintenance.