ABB A140-H55 - Expected Replacement Intervals

Operation Manual / 4 Product description / A130-H.. - A140-H..
5
Operation and service
Page 41 /
115
© Copyright 2015 ABB. All rights reserved.
HZTL4030_EN
Revision C
September 2015
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
conditions. 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
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 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]
Pre-mix GAS
GAS / MDO
HFO
Turbine casing 25000 … 50000 25000 … 50000 25000 … 50000
Nozzle ring 25000 … 50000 25000 … 50000 10000 … 25000
Gas outlet flange 25000 … 50000 25000 … 50000 25000
Heat shield 25000 … 50000 25000 … 50000 25000
Protective grid in gas
outlet casing
20000 50000 50000
Rotor components See rating plate data
Bearing parts 12000 … 24000 12000 … 24000 12000 … 24000
Other casings 50000 50000 50000
Table 10: Expected replacement intervals
GAS = Natural Gas
MDO = Marine Diesel Oil
HFO = Heavy Fuel Oil
The specified values are guideline values and not guaranteed values, see Influencing
parameters.