Uma Oya multipurpose development project

Project Info
  • Client: Ministry of Mahaweli Development and Environment of Sri Lanka
  • Main Contractor: Farab
  • Location: Bandarawela, Sri Lanka
  • Scheme: EPC
  • Scope: Electromechanical & hydromechanical equipment, two RCC dams, 25 km tunnels with 3.5 m diameter civil work
  • Progress: Under construction
  • Specification:
    • Capacity: 120 MW (2 Units of 60 MW), 145mcm/ year trans basin water conveyance
    • Type of power house: Underground
    • Average annual power generation: 290 GWh
    • Main equipment:
      • Turbine: Vertical Pelton, 600 rpm
      • Generator: Synchronous type, 10.5 KV
      • Inlet valve: Spherical, 1.1 m inner outlet diameter
      • Governor: Hydraulic with digital PID controller
      • Transformer: Three phase step up transformers, 76 MVA
      • Switchyard: 132 KV
      • Transmission line: 22.7 km
    • Civil works:
      • Dam type: RCC
      • Height of dams: 38 m and 42.5 m
      • Reservoirs link tunnel length: 3750 m
      • Headrace (power) tunnel length: 15.54 Km
      • Vertical pressure shaft (with steel lining) height: 595 m
      • Power house dimensions: 70 m × 18 m × 36 m
      • Tailrace tunnel length: 3650 m

Role of Farab Equipment Manufacturing Co.

  • Procurement of trash rack cleaning machine (TRCM)

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