ASSET FOR SALE — TECHNICAL DESCRIPTION
4 × Used GE PG9161E Gas Turbine & Generator Packages
Units GT31 · GT32 · GT41 · GT42 — GE Frame 9 / MS9001E Design,
Ex-Combined-Cycle Peaking and Base-Load Service
OVERVIEW
AJAM Group EU is offering four complete, used GE PG9161E gas turbine
and generator packages, identified as GT31, GT32, GT41 and GT42. Each
package is a matched set comprising a GE Frame 9 gas turbine, a GE
hydrogen-cooled generator, and the corresponding factory accessory
compartment, making all four units ready to be assessed, removed, and
redeployed as complete rotating equipment trains rather than as
separate components. The four units share an identical technical
platform and performance envelope, having been engineered, installed,
and operated as part of the same power generation scheme, and are
being offered together as a single package of four or individually,
subject to inspection.
All four turbines were originally synchronized to the grid in 1990 and
subsequently uprated, in two blocks between 2004 and 2006, from the
original PG9161E rating to the higher PG9171EA performance level. This
uprate program improved output and efficiency while retaining the
proven Frame 9 / MS9001E mechanical architecture, so the units combine
three and a half decades of documented service history with a mid-life
performance upgrade already carried out.
GAS TURBINE DESIGN
Each unit is built around the GE MS9001E platform, badged PG9161E, a
heavy-duty single-shaft industrial gas turbine running at a nominal
speed of 3,000 revolutions per minute at 50 hertz. The compressor
section is a seventeen-stage axial-flow design paired with a
three-stage axial turbine section, an arrangement chosen throughout
the Frame 9E family for its robustness and tolerance of both
continuous base-load duty and more frequent start-stop peaking
service. In simple-cycle configuration the design basis for the
platform is a base output of approximately 116.4 megawatts on natural
gas with a lower heating value heat rate of about 10,880 kilojoules
per kilowatt-hour, while the four units on offer are individually
rated at approximately 103.7 megawatts of base output per unit on
natural gas as installed.
The turbine is dual-fuel capable, able to run on natural gas as the
primary fuel with liquid distillate as a backup or alternate fuel,
giving an operator flexibility where gas supply is interruptible or
where a liquid-fuel reserve is a grid or regulatory requirement. The
single-shaft configuration and the platform's long production history
mean spare parts, field service expertise, and overhaul exchange
programs are widely available in the market, which supports both
continued operation and, where preferred, use of the units as a source
of spares.
GENERATOR
Each gas turbine drives a GE-manufactured, hydrogen-cooled synchronous
generator rated at 128,600 kVA, 11.5 kilovolts, 50 hertz. Hydrogen
cooling is the traditional choice for machines of this rating because
it removes heat far more effectively than air, allowing a higher
continuous output from a given frame size while keeping windage losses
low; it also implies that, as part of any relocation and
recommissioning scope, the hydrogen cooling and seal-oil auxiliary
systems will need to be inspected, serviced, and requalified by a
qualified generator specialist prior to re-synchronization. The
generator and turbine on each unit form a single matched train, so the
electrical rating quoted applies identically across GT31, GT32, GT41
and GT42.
CONTROL SYSTEM
All four units are equipped with GE Speedtronic Mark IV turbine
control systems, the control platform GE fitted as standard to Frame
9E units of this vintage. The Mark IV governs starting sequences, fuel
scheduling between gas and distillate, speed and load control, and
turbine protection functions. Buyers intending to return a unit to
service should budget for a condition assessment of the control
cabinets, and, depending on the intended operating life and any local
grid code requirements, should evaluate whether to retain the original
Mark IV platform or migrate to a modern control retrofit; either path
is well precedented on this turbine family.
PROVENANCE AND OPERATING HISTORY
The four units were originally installed and first synchronized in
1990 and operated for many years in active combined-cycle service
before being retired from that duty in 2018 and 2020. During their
operating life, both blocks of units were uprated from the original
PG9161E rating to the PG9171EA performance level as part of a
2004–2006 improvement program, extending their useful output and
giving the fleet a documented mid-life upgrade rather than three and a
half decades of unmodified original equipment. Since retirement, the
units have remained as installed, complete with their turbine,
generator, and accessory compartments, pending sale.
Full technical data, including unit-by-unit condition reports and
detailed operating and maintenance history, is available on request to
qualified enquirers, and AJAM Group EU can arrange a technical
discussion, document review, or an in-person inspection and site visit
for interested parties.
INDIVIDUAL UNIT NOTES
The technical description above applies equally to all four units,
which were engineered, uprated, and operated together as a single
fleet. The notes below record each unit's identity within that fleet;
unit-specific condition detail (running hours, inspection intervals
completed, and any component exceptions) is provided in the individual
condition reports available on request.
Unit GT31
GE MS9001E (PG9161E) gas turbine and 128,600 kVA hydrogen-cooled
generator package, first synchronized in 1990 and subsequently uprated
to PG9171EA performance level. Complete with Speedtronic Mark IV
controls and factory accessory compartment, offered as part of the
four-unit package.
Unit GT32
GE MS9001E (PG9161E) gas turbine and 128,600 kVA hydrogen-cooled
generator package, matched to GT31 within the same operating block,
first synchronized in 1990 and uprated to PG9171EA performance level.
Complete with Speedtronic Mark IV controls and factory accessory
compartment.
Unit GT41
GE MS9001E (PG9161E) gas turbine and 128,600 kVA hydrogen-cooled
generator package from the second operating block, first synchronized
in 1990 and uprated to PG9171EA performance level. Complete with
Speedtronic Mark IV controls and factory accessory compartment.
Unit GT42
GE MS9001E (PG9161E) gas turbine and 128,600 kVA hydrogen-cooled
generator package, matched to GT41 within the second operating block,
first synchronized in 1990 and uprated to PG9171EA performance level.
Complete with Speedtronic Mark IV controls and factory accessory
compartment.
SUITABILITY AND APPLICATIONS
The proven GE Frame 9 / MS9001E platform, dual-fuel capability, and
hydrogen-cooled generator rating make these packages suitable for a
range of end uses: continued base-load or peaking power generation,
industrial cogeneration where a steady supply of both power and
process heat is required, or as a source of spare-parts and
overhaul-exchange components for operators running other Frame 9E
machines. Because the four units are complete, matched sets rather
than disassembled components, they can equally be evaluated for
redeployment as whole turbine-generator trains at a new site, subject
to the buyer's own engineering and recommissioning review.
CONTACT
For full technical data packs, unit-by-unit condition reports,
operating history, or to arrange a technical discussion, document
review, or site inspection, please contact AJAM Group EU.
Husnain — Executive Director, AJAM Group EU