GE, Frame 9E, 2009, 127 MW, 3000 rpm, Natural Gas

Description

  1. Overview
    1. Frame 9e gas turbine package pg9171 with sequential dln and power augmentation
    2. Gas turbine model frame 9e
    3. Brand: GE
    4. Year of manufacturing: 2009
    5. Certificate module: A
    6. Ped/model/category: G/IV
    7. Nobo number as per installation in 2010: 38
    8. Nominal speed: 3000 rpm
    9. Net power output as per original specification: 127.214 mwe
    10. Unit date of installation/commissioning: 2010
  2. Generator Specifications
    1. Generator model: BDAX-450ERH
    2. Brand: Brush Electrical Machines Limited England
    3. Type: Turbo generator
    4. Protection: Class IP55
    5. Spec: I.E.C 60034-3
    6. Ambient temperature: 15 degrees Celsius
    7. Altitude: Up to 1000 m
    8. Output: 3000
    9. Voltage: 15000
    10. Amps: 6199
    11. P.F: 0.8
  3. Gas Turbine Condition
    1. Currently operating / standby: Preservation
    2. Date of decommissioning / stop: 2015
    3. Total factored fired hours (FFH): <500 FFH
    4. Total factored fired starts (FFS): <100 FFS
    5. Date of last major inspection: 32 K when power augmentation is disabled
    6. Type of fuel: Natural gas
    7. Mode of operation: Not applicable
    8. Type of control system: Mark Vles, SIL
    9. Report of last major (or HGP) inspection performed in the engine with rotor in place: Not applicable
  4. Gas Turbine and Generator Condition
    1. The gas turbine and generator have been last inspected in 2018 and were found to be in excellent condition. Since then, the unit and equipment have been enrolled in a preservation program to maintain the condition as was found in 2018. It is expected that the preservation program has led to a stable condition and that no degradation has taken place since 2018. A borescope inspection has been planned to confirm the expected condition of the equipment.
    2. The unit was installed in 2010 and commissioned in 2011, after a short testing period the unit was preserved until 2015. In 2015 the gas turbine was upgraded with late lean injection (LLI) and fully re-commissioned including performance test. Late lean injection enables emissions compliance at low loads resulting in an improved turndown. Due to technical constraints of the oil production system the unit was preserved again up till 2018. In 2018 another upgrade was installed enabling power augmentation with the means of steam which is extracted from the HRSG. Both upgrades are currently commercially available, more detailed information can be requested from company (under precondition).
  5. History
    1. 2009: Year of production
    2. 2010: Installation of equipment
    3. 2011: Commissioning of equipment
    4. 2011 to 2015: Equipment mothballed
    5. 2015: NPI upgrade LLI
    6. 2015 to 2018: Equipment mothballed
    7. 2018: NPI upgrade power augmentation; steam injection wrapper
    8. 2018 to today: Equipment mothballed
  6. Upgrades
    1. In 2015 LLI was installed under a NPI program of GE, high level overview of impacted parts:
      1. Wrapper modification to allow for fuel piping
      2. Modification of transition pieces with “headset” for secondary combustion
      3. Upgrade to 24K combustion hardware
      4. DLN skid; additional fuel valve and piping to allow for LLI
    2. In 2018 power augmentation was installed under a GE NPI program, high level overview of impacted parts:
      1. Wrapper modification to allow for steam injection to compressor air
      2. Steam injection control system and piping
      3. Installation of combustion dynamics monitoring
      4. Upgrade to 32K combustion hardware
      5. Upgrade of Mark VIes
      6. Upgrade of generation protection panels
      7. New HMI’s
  7. Preservation Program
    1. Since the installation of the equipment, there have been several periods in which the equipment has been mothballed. The preservation program entails amongst others:
      1. Closed off air intake and exhaust duct allowing for closed loop air circulation (dried and heated)
      2. Oil systems active, automated temperature-based activation
      3. Space heaters are active
      4. HVAC systems are active
      5. Stand still heating generator online
      6. Periodic oil sampling
      7. Nitrogen blanketed piping
      8. Monthly operation of auxiliary equipment
      9. Bi-weekly and monthly inspections
      10. The rotor is not rotated as part of the preservation program to prevent damage to bearings and rotor
  8. Scope of Supply
    1. Gas turbine
    2. Gas turbine lube oil system
    3. Hydraulic oil system
    4. Inlet guide vane system (trip oil) system
    5. Air inlet and exhaust
    6. Performance monitoring
    7. Cooling and sealing air system
    8. Gas fuel system
    9. Gas turbine auxiliary systems
    10. Cooling water system
    11. Compressor washing system
    12. Heating and ventilation systems
    13. Fire protection system
    14. Hazardous gas protection system
    15. Starting system
    16. MK VIes control system
    17. Generator
    18. Additional spare parts/tools
    19. No break unit (as part of the PECC container)
    20. PECC container
    21. Interconnecting piping and cables GT
    22. Enclosures for the GT system
    23. Boiler feed water pumps for HRSG including VSDS (9101A/B): optional
    24. Power augmentation system (steam)
    25. Natural gas pressure reduction and heating station of the GT, the unit 9310, 2 gas heaters (by hot water)
    26. Generator cooling system, the unit 9510. “CCCW systems (2 pump, 40% glycol/water), air cooler, expansion vessel
    27. Heating system for anti-icing GT (9520 unit). 2 pumps (40% glycol/water), heater (via steam) and expansion vessel
    28. Wobbe meters: optional
    29. Enclosures of the GT (within the GT building)
    30. Internal civil constructions/supports
    31. Supports (e.g. steel grating/stairs/ and handrails)
    32. Systems: out scope
    33. Compressor building and building ventilation, exhaust stack
    34. Foundation (removal)
    35. Transformer TR 9001 and TR-9002 to grid
    36. High voltage cables (busduct) from generator to the 2 trafo (outside building)
    37. Overhead crane 50 T
    38. Generator circuit breaker