Design & Build of Desalination Plant for Potable Water, PEPER

Location: Doraleh - Djibouti
Client: Ministry Of Finance And Economy - Djibouti
Date: 2021-04-20
  • Dewatering & Excavation for Cofferdam from existing ground level @ +1.70m NGD to -5.70 m NGD. The excavation quantity was 2,500 m3 of hard rocks.
  • Fabrication & Installation of specially made 150 tons, 30 x 10 x 10 m steel Cofferdam @ -5.70 m NGD
  • Cast In-situ for underwater 350 m3 concrete ballast designed for cofferdam stabilizing
  • Peripheric cofferdam backfill & ballast of 950 m3 of gravel
  • Supply and underwater installation of 2 x 1400 mm & 800 mm diameter x 500 mm thickness Stainless steel flanges for connection between pipelines and pump room
  • 20,000 m3 Underwater trench of hard corals and sand dredging in front of cofferdam for pipelines from level -4.00 m NGD till level -12.00 m NGD
  • Casting of 800 units of pipeline concrete weight blocks
  • 2 HDPE Pipelines of 780 lm & 430 lm with 800 mm & 1400 mm diameter preparation and installation from -4.00 m NGD to -23.00 m NGD
  • Dredging bottom of intake chamber @ -20.00 m NGD
  • Installation of 40 tons 5.7m high x 3.3m wide GRP intake chamber and 30m2 concrete slab @ -20.00 m NGD
  • Supply and installation of 3 signalizations buoys complete systems @ -20.00 m & -25.00 m NGD
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