Turbocharger · Turbochargers
The ABB/Accelleron TPL‑A 65 is a high‑capacity turbocharger for two‑stroke marine diesel engines, delivering up to 50 MW of boost with optimized aerodynamics for maximum fuel efficiency.
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| Compressor water wash | Daily to weekly, depending on engine load and air quality. |
|---|---|
| Turbine water wash | Weekly to monthly, depending on engine load and fuel type (HFO operation typically weekly). |
| Bearing inspection/replacement | 8,000 - 12,000 running hours (or annually), depending on condition and monitoring. |
| Major overhaul (rotor out, full inspection) | 16,000 - 24,000 running hours (or every 2-3 years). |
| Rotor balancing | During major overhaul or if excessive vibration persists after bearing replacement. |
Typical intervals for this design class, not the manufacturer’s figures for your model. The manufacturer’s manual is binding.
| Rotor axial play | New: 0.20 - 0.25 mm. Wear limit: Typically +0.15 mm from new value, or specific manufacturer limit (e.g., 0.40 mm max). |
|---|---|
| Rotor radial play | New: 0.15 - 0.20 mm. Wear limit: Typically +0.10 mm from new value, or specific manufacturer limit (e.g., 0.30 mm max). |
| Compressor/Turbine blade tip clearance | Manufacturer specific, typically 0.5 - 1.5 mm. Any rubbing marks or significant increase indicates bearing wear or casing deformation. |
| Nozzle ring opening | Visual inspection for erosion/damage. Significant increase in opening due to wear reduces efficiency; replacement required. |
| Bearing surface condition | No scoring, pitting, or excessive discoloration. Babbitt layer intact. |
Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
Class surveyors typically check the general external condition, cleanliness, and absence of leaks (oil, exhaust gas). They will review maintenance records, especially for bearing inspections and major overhauls. Operational parameters like exhaust gas temperatures, boost pressure, and vibration readings may be requested. If opened for inspection, bearing clearances (axial and radial play) will be measured and compared against limits. The overspeed trip mechanism and its last test date are also critical points of interest. Compliance with safety regulations regarding insulation and guarding is also verified.
Estimated lifetime: 100,000 - 150,000 hours with proper maintenance, regular overhauls, and timely component replacement. Major overhaul typically every 16,000-24,000 hours.
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