Equipment Condition Assessment for Centrifugal Fans

We conduct centrifugal fan assessments through a systematic protocol covering rotating components, stationary components, and structural supports. Impeller assessment includes visual inspection of blade surfaces, leading and trailing edges, back plate, and hub welds through the inspection door or during planned shutdown, with ultrasonic wall thickness measurements at defined blade locations and hub areas. Vibration assessment includes measurement at all bearing locations (horizontal, vertical, axial) with spectral analysis per ISO 10816 for severity classification and bearing defect frequency identification, and overall vibration trending against historical baselines. Bearing and housing assessment includes bearing housing fit evaluation (where accessible), pedestal bolt condition, and temperature measurement. Housing assessment includes internal and external visual inspection for cracking, erosion, and corrosion, inlet cone condition, and expansion joint assessment. Damper mechanism assessment includes linkage condition, actuator travel and response, blade position accuracy, and shaft seal condition. Foundation and structural assessment includes anchor bolt condition, grouting integrity, structural member corrosion, and platform condition. Each fan receives condition grades for impeller, bearings, housing, damper mechanisms, and structure, with impeller remaining life estimation, identified safety concerns, and prioritized recommendations with repair cost estimates.