download vag on-site no 25
TRANSCRIPT
The Rancheria River in the north of Colombia origi-nates in the Sierra Nevada and flows, after a fewchanges in direction, into the Caribbean Sea.To tame this river and make it usable for the localpeople, the Institute for Rural Development, INCO-DER and the construction company, Conalviasstarted the Rancheria dam project. The project won the national award for design engineering in 2006 when it was still in the planning phase and is considered as an historical event with substantial social impact on the region.
The region is the La Guajira desert, where morethan 400,000 inhabitants are to be supplied withdrinking water and electricity. The project is alsosupposed to secure the irrigation of the 18,000hectare of productive land.
A decisive argument for the construction of the ElCercado dam was the weather in northern SouthAmerica, where heavy rain fall and extreme droughtalternate during the summer months. The dam willprovide an equilibrium and „protect“ the resourcesat the same time.
Water for the La Guajira desert in the north of Colombia, South AmericaP L I C AT I O N D A M > A R E A O F A P P L I C AT I O N D A M > A R E A O F A P P L I C AT I O N D A M > A R E A O F A P P L I C AT I O N D A M
Rancheria, La Guajira, Colombia
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VAG
On-
site
Project:Construction of the El Cercado reservoir withunderground water distribution and supply.
Valves:13 VAG EKN® Butterfly Valves DN 450 up to DN 25001 VAG RIKO® Plunger Valve DN 800, PN 161 VAG KSS Hollow Jet Discharge Valve DN 10001 VAG brake and lift unit, dismantling joints
Project duration:Putting into operation 11/2010
Client:ConalviasInstitute for Rural DevelopmentINCODER
Project overview
12/11
The Rancheria project, a big national and
technical challenge, was led by a group of more than 200
experts and engineers.
Before the pipeline is laid, the VAG EKN® Butterfly Valve has
arrived at its destination and is ready for installation.
Rancheria, La Guajira, Colombia
P L I C AT I O N D A M > A R E A O F A P P L I C AT I O N D A M > A R E A O F A P P L I C AT I O N D A M > A R E A O F A P P L I C AT I O N D A M
The construction on this extensive project startedin January 2006: more than 1.5 tons of dynamitewere needed to create the 3,500 metre tunnel forthe underground supply system and valve cham-ber.
6,000,000 m3 of excavated material and backfillwere used to build the 116 metre high El Cercado rock-waste reservoir. At full capacity, it will store 750 million litres of water. The reservoir‘s surface will then be some 638 ha.
Twelve kilometres of pipeline with a diameter of2.20 m and 3.5 kilometres with a diameter of 1.30 m and electric cabling for the controls were laid. Over 100 valves, more than half of which were from VAG, were installed.
The VAG EKN® Butterfly Valve DN 2500 needed to close with a maximum flow of 14 m3/s and a throw distance of about 110 metres. The VAG KSS Hollow-Jet Discharge Valve DN 1000 needed to discharge 12 m3/s and also with a throw distance of about 110 metres.
VAG-Armaturen GmbH is represented locally byFerrostaal de Colombia Ltda.
'Valves from Germany have always had an excel-lent reputation in South America. Their high quality and long service life are particularly appreciated', explains Dorian Hernandez from Ferrostaal de Colombia. 'That‘s why the contractor decided to buy VAG valves for the critical areas, such as the bottom outlet. In addition VAG offered excellent support and advice on the design of the valves we needed.'
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For this project, please contact Jaime Bonilla, [email protected] [email protected]
Happy faces when the valves are put into operation in November 2011:
Ricardo Ariza Q, Eng (Ferrostaal de Colombia Ltda), Marco Emilio Gutierrez, Eng (Conalvias), Dr Nyree Quintero (Conalvias), Dr Luis Garcia, Eng (TIAM / Sub-Contractor), and Frank Löffler, member of the VAG Service Team
A logistical feat: The enormous valves are brought to the extensive tunnel as soon as they reach their destination.
VAG
On-
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