30 April 2008
The project consists of pumping water from desert wells several hundred metres deep and transporting it through 4 metre diameter buried concrete pipe to storage and detention reservoirs near the coastal stretch.
This project, initiated in 1983 had 2 initial phases. Phase 1, in the east, involved the construction of an irrigation complex stemming out from about 100 well fields. These fields fed a holding reservoir in Ajdabiya through 200 km. of pipeline (green), which in turn fed two other reservoirs in Benghazi and Sirte.
Phase 2 was a network of1500 km. of pipeline in the west of the country (blue). In 2002 Vinci Construction Grands Projets was awarded Phase 3 and in 2003 (orange), they entrusted the process control system to the Oil & Gas Engineering unit of Actemium.
Vincent Sevaistre, Actemium project manager, says, ‘Phase 3 consisted of interconnecting the two networks so that the water could flow in both directions. The turnkey construction project included two pumping stations at Phase 1 and 2 terminals, a detention reservoir halfway as well as the connection over a distance of 200 km. This was carried out using 4 metre diameter pre-stressed concrete pipes. Our 3.2M € contract was for the entire equipment process control.’
Dominique Doro, Actemium technical supervisor, adds: 'We carried out the studies, programming, supplying, testing, installation and implementation of the Siemens PCS7 system, which controls 20 motor pumps, eight regulating valves and sixty-eight anti-pressure surge tanks; integrating 30 different operating methods.'
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