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Nakai, part of Nam Theun 2 HPP

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Nakai, part of Nam Theun 2 HPP on Google Earth
Nakai, part of Nam Theun 2 HPP on Google Earth

Particulars

Owner: /Nam Theun Power Corporation (NTPC)/EdF (Electricitie de France)

Designer: Italian Thai-Nishimatsu Construction Co. JV

Contractor: Italian Thai-NCC JV

Statistics

Type: Gravity

Purpose(s): Hydropower

Reservoir capacity: 3530 m3x106

Height: 39 metres

Length: 436 metres

Volume of RCC: 155 m3x103

Total volume: 200 m3x103

Construction Dates

Start of Project: 04/04 (April 2004)

Start of RCC: 02/06 (February 2006)

End of RCC: 03/07 (March 2007)

End of Project: 10/09 (October 2009)

Country: Laos

River: Nam Theun

DMS Co-ordinates: 17˚59'50.25"N, 104˚57'8.82"E

DD Co-ordinates: 17.997292, 104.952454

Facings

Upstream

SlopeType
 Traditional concrete against formwork

Downstream

SlopeType
 RCC against precast concrete blocks

Spillway

SlopeType
 Reinforced conventional concrete cast after RCC placement

Placement

Layers (mm)Lifts (mm)
300300

Cementitious material

Cement (kg/m3)
100
Pozzolan (kg/m3)Pozzolan Type
100Low-lime flyash (ASTM Class F)