Operation Manual / Power2 850-M / 4.1 Low-pressure stage
3 Expected replacement intervals /
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HZTL4062_EN
Rev.C
July 2020
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
HFO
Gas inlet casing
50000 … 100000
35000 … 50000
Gas outlet casing
50000 … 100000
50000 … 100000
Nozzle ring
35000 … 50000
25000 … 50000
Turbine diffuser / cover ring
35000 … 50000
25000 … 50000
Other casings
100000
100000
Rotor components
See rating plate information
Bearing parts
See rating plate information
Turbine blades
(due to wear)
- -
≥
12000
Table 4: Expected replacement intervals [h]
GAS
= Gas
MDO
= Marine Diesel Oil
HFO
= Heavy Fuel Oil
The specified values are guideline values and are not guaranteed, see influencing paramet-
ers.
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