Operation Manual / TPL67-C.. - TPL71-C..
8 Disassembly and assembly / 8.8 Dismantling and fitting nozzle ring
at turbine end
© Copyright 2020 . All rights reserved. HZTL2488_EN Rev.G March 2020
Qualitative requirements for the nozzle ring area in HFO operation
¡ Coverage of one or more nozzle ring blade pitches by more than 50%
respectively is not permitted.
¡ The surface reduction of the nozzle ring due to contamination may
be no more than 15%.
Assembly
u Carefully clean grooves and contact surfaces in / on casing and keep
free from metal chips.
u Keep grooves and spiral-wound gasket free from oil and grease.
1) If provided
u Fix a new spiral-wound gasket (61050) using a little instant adhesive
(for example "Loctite454gel") applied at three equally spaced points
in groove.
u Fit nozzle ring to gas inlet casing and fix it.
u Fit gas inlet casing.
u Use guide studs (90320) as a centering aid and remove them after-
wards.
u Brush screw threads (61044) with high temperature grease.
Segment connection
u Position segments (51012) using screws (61044).
Checking
Make sure that collars (C) of segments (51012) rest in groove (S).
Flange connection
u Position screws (61044).
Page 102 / 125
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