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5.3.3
CAUTION
© Copyright 2016 ABB. All rights reserved.
Maintenance
Turbine cleaning during operation
Procedure for method with short water injection time
Prerequisites have been fulfilled.
ϖ
Wait 10 minutes during a stabilising phase after reducing the engine
τ
load.
Open the shut-off valve.
τ
Set the required water flow rate as specified in the table of cleaning
τ
parameters using the flowmeter and inject for 30 seconds.
Observe a pause of 3 or 5 minutes as specified in the table.
τ
Repeat the 30-second water injection two times.
τ
Close the shut-off valve.
τ
Wait 10 minutes during a stabilising phase before increasing engine
τ
load again.
This completes the turbine cleaning process.
Cleaning parameters during the process
Temperature in
front of the turbine
during cleaning
TPS
[°C]
44
≤ 450
48
52
57
61
corresponds to a water pressure p
1)
mosphere)
Maximum temperature in front of turbine during cleaning
When cleaning, the temperature in front of the turbine will rise and can
heavily stress the material of turbine components. The temperature at
the turbine inlet can be up to 100 °C higher than the exhaust gas tem-
perature after the cylinder. This should be taken into consideration
when setting the operating point before cleaning.
Don't exceed maximum temperature in front of turbine when cleaning.
τ
Operation Manual / TPS44-F.. - TPS61-F..
5
5.3
Water
Injection time
volume flow
[min]
1)
[dm
/min]
3
4.5
(3 x)
6
8
11
17
of 2.0 bar (overpressure over at-
WT
Page 64
Pause between
injections
[min]
0.5
3
5
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