RCM for Induction Motors

We begin by classifying your motor population into criticality tiers based on consequence of failure — production impact, safety implications, repair/replacement cost, and lead time. For each criticality tier, we conduct RCM analysis defining motor functions (convert electrical energy to mechanical output at specified speed and torque, contain rotating and electrical hazards, reject waste heat) and identifying functional failures and failure modes. The JA1011 decision logic is applied per mode: vibration monitoring as the primary on-condition task for bearing degradation, with regreasing intervals calculated per bearing geometry and speed factor for lubrication-related modes; insulation resistance trending per IEEE 43 for winding degradation in medium-voltage and critical motors; MCSA for rotor bar defects where consequence justifies the monitoring cost; and thermographic surveys for connection and cooling system assessment. Low-criticality motors may default to run-to-failure for non-safety failure modes where the consequence analysis supports it. Failure-finding tasks are defined for protective relay functions (thermal overload, ground fault, locked rotor). The living program is updated based on motor failure incident reviews.