RCM for Centrifugal Fans

We facilitate the RCM analysis with operations, maintenance, and process engineering personnel. Fan functions are defined with performance standards (air/gas flow rate, pressure rise, efficiency, containment of process gas). Failure modes are analyzed: impeller (erosion-induced thinning and imbalance, fatigue cracking at blade-to-backplate welds, material buildup and imbalance, corrosion), bearings (fatigue spalling, lubrication degradation from thermal exposure, housing fit looseness), structure (housing cracking, inlet cone erosion, expansion joint failure), damper mechanisms (linkage wear, actuator failure, shaft seizure), and drive components (belt wear, coupling degradation, motor failures). The JA1011 logic tree determines: vibration monitoring as the primary on-condition task for bearing and impeller balance modes, performance monitoring (flow, pressure, power consumption) for erosion-related capacity degradation, internal visual inspection as a scheduled on-condition task for structural modes where external monitoring is insufficient, and damper function testing as a failure-finding or on-condition task depending on consequence classification. Inspection intervals for internal assessments are justified by erosion rate data and consequence severity.