Removing And Installing Turbine-End Nozzle Ring - ABB HT608016 Operation Manual

Operation Manual / A170-M.. - A175-M..
9 Disassembly and assembly / 9.14 Removing and installing turbine-
end nozzle ring
9.14

Removing and installing turbine-end nozzle ring

Removing the nozzle ring
If only the nozzle ring has to be removed, this can be done at the turbine end.
CAUTION
Leaking connection
Reusing the removed spiral-wound gasket (61050) will result in leaking con-
nections. Spiral-wound gaskets may only be used once.
Provide new spiral-wound gasket (61050).
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NOTICE
Blocked areas on nozzle ring
If a nozzle ring is blocked in some areas or is covered by loose parts, it is re-
commended to appoint an ABB Turbocharging Service Station to inspect the
turbine blades and carry out a crack inspection.
In order to access the fixing screws, and loop around and transport the gas inlet casing, the
insulation has to be removed as required.
CAUTION
Damaged cleaning pipes
When looping around, ensure that any cleaning pipes present are not
pressed or damaged.
Never secure the lifting gear to the cleaning pipes.
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© Copyright 2021 ABB. All rights reserved. HZTL4033_EN Rev.H July 2021