Equipment Condition Assessment for Steam Turbines

We conduct steam turbine assessments through a multi-discipline protocol. Mechanical assessment includes vibration measurement at all bearing locations (radial, axial) with spectral analysis, shaft proximity probe data review for orbit and runout analysis, bearing temperature and lube oil temperature trending review, coupling condition evaluation (where guard removal is permitted), and gland seal condition assessment (steam leakage observation, gland condenser operation). Performance assessment includes comparison of actual inlet/exhaust conditions, stage efficiencies, and overall turbine efficiency to design and historical values, with quantification of any degradation. Protection system assessment includes functional testing of overspeed trip, vibration trip, low oil pressure trip, and thrust bearing temperature trip per API 612 recommended practices, with as-found setpoint documentation. Borescope inspection covers accessible blade rows, documenting blade deposits, erosion patterns, tip clearance observations, and any cracking or mechanical damage indications. Lube oil system assessment includes oil analysis, reservoir condition, oil cooler performance, and filter condition. Each turbine receives an overall condition grade, protection system test report, performance degradation summary, and prioritized recommendation list with estimated costs for corrective actions and next overhaul scope items.