Which maintenance approach ensures equipment continues to perform its intended function by identifying potential failure modes, assessing consequences, and selecting appropriate maintenance actions?

• A. Reliability Centered Maintenance (RCM)
• B. Preventive Maintenance
• C. Corrective Maintenance
• D. Predictive Maintenance

Answer: (A)

Focus is on keeping equipment performing by looking at how it could fail, what would happen if it did, and choosing actions that preserve function. Reliability Centered Maintenance is the approach that does this best. It starts with what the equipment is supposed to do, identifies potential failure modes that could prevent that, and evaluates the consequences in terms of safety, downtime, and costs. With that understanding, it selects maintenance actions that maintain function in the safest and most economical way, such as preventive replacements, condition monitoring, or targeted inspections—only applying them where they reduce risk effectively. This is different from simple time-based preventive tasks, which don’t necessarily address how or why a failure would impact performance, or from corrective maintenance, which acts only after a failure occurs, or from purely predictive methods that focus on watching condition data without tying it to a structured decision about maintaining function. For example, in a pump, RCm would consider failure modes like seal leakage or bearing wear, assess the consequences such as leakage or unplanned downtime, and then decide whether to replace seals on a schedule, monitor vibration and lubricate bearings, or implement other actions that keep the pump delivering its required service.