Xerias river basin has an area of 174 km2 and extends from the town of Korinthos (North) to the Southern districts of the Korinthos Prefecture, at the frontier with Argolida. Xerias river flow is seasonal with intense fluctuations. The January 1997 storms caused serious disasters.
The works included:
- Open and closed parts combination with composite concrete/steel sections, 1330m long.
Design revision was necessary due to the network’s extension. The works included:
- The total network (old and new) consists of 2683 nodes and 3273 links.
- The range of selected diameters is varied between 60mm to 600mm of 120 Km total length.
- The design needs of the client required the provision and specification of measuring and control devices, water leakage detection and SCADA automated network control.
The purpose of the studies was the rehabilitation and extension of existing water supply, stormwater and wastewater networks, as well as the construction of new flood protection and training works, as a part of the highway works.
The designed works cover a big area of Athens, along the Attiki Odos Highway.
- The computational magnitude of the network is major and includes:
o The lower zone with 11161 links and 7502 nodes
o Middle zone Μ1 with 2250 links and 1479 nodes
o Middle zone Μ2 with 102 links and 69 nodes
o Hgher zone with 235 links and 153 nodes
- Both uniform and separated zone distribution network calculations were made
- The project includes a circumferential distribution water mains for the regulation of the tanks’ supply and the ability for two-way water flow.
The revision concerns the pipe material, slight alteration of the pressure zones and details regarding the operational structure of the network, in order to facilitate water leak detection efforts.
The design specification require the implementation of proper measuring gauges and control devices, intended for the central SCADA automated network management and the facilitation of leakage detection.
The works include:
- The model size is 10400 nodes and 15675 links, with a total length of 745km
The Gadouras Dam Reservoir supplies the water treatment works. The treatment works are part of the overall water supply scheme of Rhodes from Gadouras.
The works included:
- The plant consists of inlet works, polyelectrolyte and alum dosing and storage facilities, sludge blanket clarifiers, rapid gravity filters, disinfection units and potable water storage tanks.
- The maximum design flow is 60.000 m3/day for the first phase and 120.000 m3/day for the final phase.
The future water needs of Rhodes will be covered by Gadouras dam and reservoir. This project covers the final design stage of all the water mains and other structures necessary, from the reservoir to the regulating tanks of the water supply network of the city of Rhodes.
The works included:
- Construction of a steel pipeline of diameters varying from Ø1300 to Ø800, with a total length of 50km, including an 800m tunnel
- Construction of a maintenance access road
The project involves the extension of the existing pipeline to a wider area, covering potable water needs around the island, substituting weak underground resources.
The pipeline design extends to a total of 130km and includes numerous related infrastructure such as control tanks and devices and pumping stations.
The project involves the construction of a 90Km long external pipeline from the Aposelemis Dam water treatment plant to Agios Nikolaos, covering potable water needs to various settlements along the aquedact. The pipelines include numerous related infrastructure such as control tanks and devices and pumping stations.
Designed works include:
o A main 6.25Km long external pipeline with diameter 1700mm and 5.5 m3/sec flow rate.
o Capacity audit of the 13Km long Mpogiatiou water tunnel (constructed in 1930) for flow rate Q=10.0 m3/sec. Design of:
▫ Water works for the connection of Mpogiatiou water tunnel with the grit removal tank
▫ The grit removal tank
▫ Power plant station including a water energy production turbine and a D1700mm pipe.
