Utility advanced turbine systems (ATS) technology readiness testing -- Phase 3. Technical progress report, October 1--December 31, 1997 Page: 27 of 74
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First-Stage Shroud
Best practices and lessons learned will be documented, and the scope of continuing efforts will
be determined.
Rotor Flanges Design
Best practices and lessons learned will be documented and the scope of the follow-on efforts
will be defined.
Technology Application
Many results from the robust design studies described above were incorporated in drawing
releases and are also being used to enhance the producibility of steam-cooled parts. Response
surfaces are being utilized for assessing the LCF life of cast parts, and robust design
methodology has been applied by the design engineers to other components of ATS gas
turbine.
Section 2.2.2.6 (GTFFST) Structures Design
Objective
The objective of this task is to design the exhaust frame and diffusers, steam gland, and aft
bearing housing. Instrumentation and test plans for component model, factory, and field
testing will be prepared.
Progress for this Quarter
Exhaust Frame and Diffuser
The exhaust frame and diffuser supplier completed machining and assembly to produce the
first exhaust frame. Because the forward diffuser is inaccessible after final assembly into the
frame, GE Instrumentation personnel went to the vendor and installed the instrumentation in
the forward diffuser. The aft diffuser duct completed performance tests and showed promising
results (for minimal loss on pressure recovery) at CRD. An additional acoustic resonance
concern arose in post-test data reduction that showed a need for further research at low swirl
turbine exit flow at low and part power. The aft diffuser inner barrel fabrication and machining
drawing was issued and sent to the vendor for production.
Steam Gland
The delivery of the steam gland is on schedule to the 9H FSNL test pending completion of
final machining and seal manufacture. The vendor completed the machining for the first unit,
and final pipe attachment welding is in process. The steam gland will be hydrostatically tested
and shipped to Greenville in 1Q98.
#2 Bearing Housing
The bearing housing was completed at the machining vendor site and passed first piece
qualification (FPQ). This housing has been shipped from the vendor and is expected to arrive
in Greenville on January 18. Transient thermal (machine trip) and flow analysis work is
continuing on the heat rejection at the bearing resulting from steam supply through the rotor19
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Utility advanced turbine systems (ATS) technology readiness testing -- Phase 3. Technical progress report, October 1--December 31, 1997, report, December 31, 1997; United States. (https://digital.library.unt.edu/ark:/67531/metadc690216/m1/27/: accessed April 19, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.