Nam Na Hydropower Plant 2

Investor: Hung Hai Construction Co., Ltd

Capacity: 3x22MW

Contractor: LILAMA10 Joint Stock Company

Nam Na 2 hydropower project is located in Lai Chau province, started construction in May 2009 and is in the process of installing and finishing machines, with installed capacity Nlm=66MW.

The main parameters of the project:

- Installed capacity: Nlm=66 MW;

- Average annual electricity: E0=254.11 million KWh;

- Riverbed hydropower plant, 03 units, Kaplan turbine, vertical shaft;

- Structural weirs made of gravity concrete, dam crest elevation 264.5m, dam crest length 58m, maximum height 24.5m;

- Structural reinforced concrete spillway, non-vacuum Ofixerov type, overflow area 61m wide, maximum height 33.5m, has 4 overflow chambers, each cavity width 13m, radial gate opening and closing by hydraulic cylinder force;

- Design flood discharge volume Q0.5%=4.810 m3/s, test flood discharge Q0.1%= 6,120 m3/s;

- Maximum flow through the factory: Qmax= 444 m3/s;

- Commencement: May 2009

- Consultancy contents: Survey, technical design - preparation of total cost estimates, preparation of bidding documents for equipment, construction design and author supervision;