Operation Manual / Power2 340-H / Low-pressure stage
6 Operation and service / 6.3 Expected replacement intervals
© Copyright 2022 ABB. All rights reserved. HZTL4053_EN Rev.F March 2022
6.3 Expected replacement intervals
Rotating components
The recommended replacement intervals of the compressor and turbine wheels are spe-
cified with the aid of the safety concept for rotating parts (SIKO) and dependent on the op-
erating conditions. These intervals are shown on the rating plate of the low-pressure and
high-pressure stage.
Non-rotating components
Depending on the system-specific operating conditions, a differentiation must be made
between 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
drastically reduce 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]
GAS / MDO
Turbine casing 25000 … 50000
Nozzle ring 25000 … 50000
Gas outlet flange 25000 … 50000
Heat shield 25000 … 50000
Rotor components See rating plate data
Bearing parts 12000 … 24000
Other casings 50000
Table15: Expected replacement intervals [h]
GAS = Gas
MDO = Marine Diesel Oil
The specified values are guideline values and are not guaranteed, see influence parameters.
Page 49 / 122
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