Electric Power Generation

18315 Kings Lynn, Houston, Texas 77058

BBC Gas Turbines

Two BBC Gas Turbines 56MW each

We can offer subject prior sale the following 60 cycle BBC gas turbine generator units:


2 - 56,000 KW 80% PF 70,000 KVA BBC GENERATORS,
3 PHASE, 60 CYCLE, 13,800 VOLTS, 3600 RPM, DIRECT
CONNECTED TO
2 - 56,000 KW BBC GAS TURBINES , NATURAL GAS FIRED,
TYPE 8, 3600 RPM. NEW 1985.
Each unit is equipped with 400,400#/HR heat recovery steam
generator available at additional cost.

Please note that these units located in the United States were operated at 60 cycle - 13,800 volts - however per the following additional information that the nameplate indicates they will also operate at 50 cycle - 11,500 volts:

Gas Turbine
Manufacturer BBC Type 8
Type 8 Axial Reaction
Number of Compressor Stages 12
Number of Shafts 1 Common
Number of Turbine Stages 3
Speed of Shaft 6339/6349
Mechanical Limit 55 MW
Exhaust Mass Flow 177 kg/s
Exhaust Gas Temp 525C
Casing Design Horizontal Split
Rotor Design welded
Number of Journel Bearings 2
Number of Thrust Bearings 1

Combustion Chamber
Manufacturer BBC
Tile Temp 820C
Pressure Drop 3,7%
External Diameter 1.95Meters

Reduction Gear
Manufacturer MAAG
Type G-72 S

Generator
Manufacturer BBC
Type WY 16 L0068 LLT
Frequency 50/60
Nominal Output 68.75/82.5 MVA
Rated Voltage 11.5/13.8 kV
Voltage range +/- 5%
Rated Current 3452/3600 A
Speed 3000 rpm
Short Circuit ratio 0.456 kc

Exciter
Manufacturer BBC
Type WBF 6-4 K
Frequency 50/60 Hz

1. Last overhaul, GT-901 - March 2000, GT-902 - November 2000.
2. GT-901 Overhaul March 2000:
Replaced all hot gas path parts
Replaced hot gas casing
Cleaned and inspected compressor blades, reshimmed rows 10, 11, & 12
Repaired tile carrier to specifications
Replaced 13 row A tiles, 4 row B tiles, 0 row C
Removed liquid fuel oil system
Rebuilt all 3 blow-off valves
Completed alignment inspection, did not move
Inspected gearbox, combustor inner liner insert (CILI), rotor, bearings, and generator
I&E calibrated/checked all alarms and trips, modified control system for the fuel oil system removal, pressure tested the gas system, calibrated gas control valve, rotor end face and compressor discharge temperature transmitter, and the turbine inlet temperature controller.
GT-902 Overhaul November 2000
Replaced all hot gas path parts
Replaced tile carrier with spare from Shell unit
Cleaned and inspected compressor blades
Replaced 33 row A tiles, 39 row B tiles, 43 row C tiles
Removed liquid fuel oil system
Completed alignment inspection, moved gearbox, generator
Inspected gearbox, hot gas casing, combustor inner liner insert (CILI), rotor, bearings, and generator
Rebuilt all 3 blow-off valves
I&E calibrated/checked all alarms and trips, modified control system for the fuel oil system removal, pressure tested the gas system, calibrated gas control valve, rotor end face and compressor discharge temperature transmitter, and the turbine inlet temperature controller
3. Operating hours since last OH: GT-901 - 26,275 OH, 29,395 EOH, GT-902 - 23,475 OH, 26,375 EOH

281-333-5652