TPS-F

Common issues

• Compressor fouling (reduced efficiency, surging risk)
• Turbine nozzle fouling (reduced power, increased exhaust back pressure)
• Bearing distress from poor oil quality (excessive play, vibration, potential rotor damage)
• Rotor imbalance from deposits (vibration, bearing wear, potential catastrophic failure)
• Seal ring wear (oil leakage into exhaust/compressor, increased oil consumption)
• Exhaust casing cracks (thermal stress, gas leakage, safety hazard)
• Air filter clogging (reduced boost pressure, increased compressor wear)
• Foreign object damage (FOD) to compressor or turbine blades

Inspection checklist

• Visual inspection of compressor and turbine wheels for fouling, erosion, or damage (using boroscope if necessary).
• Check rotor axial and radial play (cold check, compare to limits).
• Inspect lubricating oil supply and drain lines for leaks, blockages, or signs of carbonization.
• Examine exhaust gas casing for cracks, hot spots, or signs of gas leakage, especially around the nozzle ring.
• Verify condition of air filter element and intake ducting for cleanliness and integrity.
• Monitor operational parameters: boost pressure, exhaust gas temperatures (pre/post turbine), and oil pressure/temperature.
• Listen for unusual noises (whining, grinding) and check for excessive vibration during operation.
• Inspect flexible bellows/compensators on exhaust and air side for cracks or leaks.
• Check integrity of safety devices like bursting disc or overspeed trip mechanism.

Service intervals

Typical wear limits

Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.

Critical spares

• Bearing kit (thrust and journal bearings, bushings)
• Seal ring kit (gas and oil side seal rings)
• Gasket and O-ring set (for overhaul)
• Air filter elements
• Lubricating oil pump (if external and critical for operation)
• Bursting disc (if applicable)

Safety

• High rotational speeds (up to 100,000+ RPM) - potential for uncontained failure if rotor integrity is compromised.
• High temperatures (exhaust gas side can reach 500-600°C) - risk of burns and fire.
• Pressurized systems (boost air up to 4 bar, exhaust gas) - potential for leaks or rupture.
• Hot lubricating oil under pressure - risk of spray fires if lines fail.
• Noise hazard during operation - hearing protection required in vicinity.

Class survey

Class surveyor will typically review the turbocharger's maintenance records (running hours, cleaning, bearing changes, overhaul reports). A visual inspection for external leaks, cracks, and general condition is performed. Operational checks (boost pressure, temperatures, vibration) may be requested. Verification of safety devices (e.g., bursting disc, overspeed trip) and onboard spare parts inventory for critical components will also be part of the survey scope. Any signs of excessive fouling, vibration, or unusual noise will warrant further investigation.