Specifications - GMR (Great Man-made River) Water Supply Project, Libya
| Key Data | |
|---|---|
| Phase I | Provide 2 million m³/day along 1,200km pipeline from As-Sarir and Tazerbo to the Ajdabiya reservoir to Benghazi and Sirt |
| Phase II | Pumping from the south western aquifer (Fezzan) to Tripoli and Jeffara plain |
| Designed for future expansion in Phase III | |
| Phase III | Expansion of existing Phase 1 system; additional 1.68 million m³/day (increasing total capacity to 3.68 million m³/day); 8 new pumping stations; 700km of new pipeline |
| Supply 138,000m³/day to Tobruk and the coast; new wellfield at Al Jaghboub; reservoir south of Tobruk; 500km of new pipeline | |
| Phase IV | Extension of distribution network; construction of a pipeline linking the Ajdabiya reservoir to Tobruk |
| Phase V | Connection of the eastern and western systems into a single network in Sirt |
| Sarir to Sirt | 800km |
| Tazerbo to Benghazi | 783km |
| Average water flow rate | 0.95m/s |
| Transit time | Around 9 days |
| Murzuk basin raw water soluble salt content | 300ppm |
| Kufra basin raw water soluble salt content | 250ppm |
| Phase I power demand | 65MW |
| Power lines | Sarir wellfield - 66kV transmission line; Tazerbo wellfield - 220kV national power line, transformed down to 66kV at substation |
| Project Timeline | |
| Project initiated | 1983 |
| Work commenced | 1984 |
| Initial soil resistivity survey | 1989 |
| First water received | April 1990 |
| Phase I (Sarir to Benghazi) inaugurated | August 1991 |
| Cathodic protection system implemented | 1995 |
| Phase II (Tripoli supply) completed | September 1996 |
| Phase II Jeffara plain | 2000 |
| Pumping station contract awarded | October 2001 |
| Pipe production plant O&M contract awarded | 2002 |
| Phase III assignment period | January 2002 to June 2005 |
| Pumping station completion (expected) | Summer 2004 |
| Pumping station service and technical support contract initial term | 2004-05 |
| Estimated time to final completion | 25 years |
| Cost | |
| Phase I | $14 billion |
| Pipe production plant O&M contract | $350 million |
| Water pumping station turnkey construction | $82 million |
| Phase III preliminary engineering / design | $15.5 million |
| Total cost | $27 billion (2004 estimate) |
| Key Players | |
| Owner | Great Man-made River Authority |
| Funding | Government of Libya |
| Original project design | Brown & Root / Price Brothers Cy |
| Main contractor - initial phases | Dong Ah |
| Sub-contractors | Enka Construction & Industries; Thyssen Krupp Fördertechnik; Al Nahr Co. |
| Main contractor - phase III | Nippon Koei and Halcrow |
| Pipe production plant operation and maintenance | SNC-Lavalin |
| Concrete | Libyan Cement |
| Pipeline coating | Thane-Coat; Harkmel |
| Cathodic protection system | Corrintec |
| Pumping station construction / service and technical support contract | Frankenthal KSB Fluid Systems Consortium |
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