ABB PT003888 - Taking the Engine out of Operation for more than 12 Months

Operation Manual / Power2 340-H / Low-pressure stage
11 Mothballing the low-pressure stage / 11.2 Taking the engine out of
operation for more than 12months
© Copyright 2022 ABB. All rights reserved. HZTL4053_EN Rev.F March 2022
u Completely fit low-pressure and high-pressure stage.
Rotor turning in stack draught
If the rotor turns as a result of the stack draught:
u Install a blind flange between the outlet flange of the compressor casing and the charge
air duct.
11.2 Taking the engine out of operation for more than
12months
If the engine is taken out of operation, the following variants are possible with regard to the
low-pressure and high-pressure stage:
¡ Low-pressure and high-pressure stage remain attached to the engine.
¡ The casings of the low-pressure and high-pressure stage remain attached to the engine,
while the rotor and bearing parts are dismantled by a Turbo Systems service station and
stored separately.
¡ Low-pressure and high-pressure stage are completely removed, either as whole units or
in single parts.
For the measures always necessary for preparing the low-pressure and high-pressure stage
for mothballing, see section Taking the engine out of operation for up to 12months, subsec-
tion Preparations for mothballing.
If the low-pressure and the high-pressure stage remain attached to the engine, see section
Taking the engine out of operation for up to 12months, subsection Rotor turning in stack
draught.
If the complete low-pressure and high-pressure stage are removed or if the low-pressure
and high-pressure stage are reassembled from their individual components:
u Seal all openings of the low-pressure and high-pressure stage with paraffin paper and
wooden lids.
Only dry rooms with 40…70% atmospheric humidity, in which no water condensation can
form, are suitable as storage locations.
State of the mothballed low-pressure and high-pressure stage
u Check the low-pressure and high-pressure stage parts annually for corrosion
u If there are signs of rust: Thoroughly clean parts and renew corrosion protection.
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