Combined-Cycle Plant

800-MW combined-cycle station with a unique 6x1 configuration

Middle East
Combined-Cycle / 800 MW / Block 1, Block 2, each 6x6x1
Client: Confidential

  • Primary Fuel - Natural gas
  • Backup Fuel - Liquid fuel oil
  • 12 GE LM6000 SPRINT GTGs
  •  12 OTSGs
  • 2 Skoda MTD 40 STGs
  • Black start diesel generator
  • 2014 - COD

The 800-MW combined-cycle station is an IPP facility located in the Middle East. Sargent & Lundy provided complete detailed engineering, design, and procurement services to support two independent blocks (Blocks 1 and 2) of six dual-fired GE LM6000 SPRINT (SPRay INTercooling) combustion turbine generators (GTGs) and six once-through steam generators (OTSGs) from IST. Each block has a dedicated axial Skoda MTD 40 condensing-type steam turbine generator (STG). The station is designed to burn natural gas with liquid fuel oil used as backup.Blocks 1 and 2 each include one 100% STG bypass system for high-pressure (HP) steam and low-pressure (LP) steam. The steam turbine axial discharge enters into a steam surface condenser. The cooling water is supplied to the condenser from a wet cooling tower (14-cell induced draft), which uses seawater as makeup. The station was designed primarily as an outdoor facility and all components are suitable for a coastal sea environment.Project Scope:

  • Detailed plant design
  • Procurement services
  • Worked with Owner to comply with stringent national security requirements in building designs
  • Interfaced, coordinated, and integrated local engineer's designs and equipment suppliers in overall plant design
  • Plant and systems designed for multiple combinations of GTs in operation to support daily start-up
  • Use of OTSGs allows simple-cycle operation mitigating the need for a bypass stack
  • Deaerating condenser incorporated with full bypass capability
  • Design included 400-kV gas-insulated substation (GIS)
  • Utilization of one 3-winding generator step-up (GSU) transformer per pair of GTs

For more information about our services, please visit our Coal, Oil & Gas page.

James Malone

Director of Business Development




Jim brings 37 years of knowledge to the Power Generation Industry including comprehensive consulting, design engineering, product understanding and analysis for projects worldwide.