Water supply and sewerage
Greater İstanbul Water Supply Stage II: Melen System
- Location
- İstanbul, Türkiye
- Client
- DSİ
- Period
- 1996–2008
- Service
- Engineering and consultancy
- Key data
- 900 million m³/year
Scope
- Melen intake and pumping station: 6 units of 4,500 kW each
- 138 km steel transmission main, 2,500 mm diameter
- About 25 km of tunnels, including the 5,500 m Bosphorus Tunnel (4,000 mm diameter)
- Cumhuriyet water treatment plant, 720,000 m³/day
- Final design, tender documents, contractor prequalification, bid evaluation, detailed design and construction supervision
- Joint venture: Nippon Koei, Gibb, Mott MacDonald, SETAN, Su-Yapı, Temelsu, Dapta, Sial. Financed by JBIC.
