Reliability-Centered Maintenance (RCM)
A structured methodology for selecting the right maintenance strategy for each asset based on its functions, failure modes, and consequences.
RCM is a decision framework, developed in the aviation industry and codified in standards such as SAE JA1011, that determines what maintenance an asset actually deserves. For each asset it asks: what functions must it perform, how can it fail to perform them, what causes each failure, what are the consequences, and what task — if any — cost-effectively addresses each failure mode. The output is a strategy per failure mode: time-based task, condition monitoring, redesign, or deliberate run-to-failure.
Its central insight reshaped the industry: maintenance exists to preserve function, not to preserve equipment, and consequence determines effort. A failure that threatens safety or major production justifies monitoring and redundancy; a failure with trivial consequence justifies nothing. RCM is why documented run-to-failure is a legitimate strategy rather than negligence.
Full classical RCM is analysis-heavy, so most organizations apply streamlined variants — full rigor on the most critical systems, template-based strategies for common equipment classes. FMEA supplies the analytical core either way, and work-history data from the CMMS supplies the evidence that keeps the analysis honest over time.
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