ABB HT557844 - Expected Replacement Intervals

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HZTL4032_EN
Revision F
January 2017
5.3 Expected replacement intervals
Rotating components
The recommended replacement intervals for compressor and turbine wheels are specified
based on the safety concept for rotating parts (SIKO) and dependent on the operating condi-
tions. These intervals are shown on the rating plate of the turbocharger.
Non-rotating components
Depending on the system-specific operating conditions, a differentiation must be made be-
tween the intervals to be expected for:
 replacing the bearing parts and
 replacing the non-rotating components exposed to hot gas.
A decisive role is played by various influencing parameters which, in extreme cases, can dras-
tically shorten the replacement interval of these parts.
During the prescribed periodic service work, the individual parts are examined for wear and
replaced if necessary.
Expected replacement intervals [h]
MDO
HFO
Turbine casing 25000 … 50000 25000 … 50000
Nozzle ring 25000 … 50000 10000 … 25000
Gas outlet flange 25000 … 50000 25000
Heat shield 25000 … 50000 25000
Rotor components See rating plate data
Bearing parts 12000 … 24000 12000 … 24000
Other casings 50000 50000
Table 9: Expected replacement intervals
MDO
= Marine Diesel Oil
HFO
= Heavy Fuel Oil
The specified values are guideline values and not guaranteed values, see Influencing parameters.