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| Demwe Upper Hydroelectric Project (1080 MW) |
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| Client: |
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Lohit Urja Private Limited
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Services:
Pre-construction stage investigations, preparation of Pre-Feasibility Report, preparation of Detailed Project Report, Preparation of tender documents and drawings, assistance in acquisition of clearances, assistance in bid and award of EPC Contract, Detailed Design, Construction services and Project Management.
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| Details of the Project: |
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| Location: |
Dam site is located in District Anjaw, Arunachal Pradesh. |
| Total Catchment area |
18,947 km2
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| Installed Capacity |
5 x 206 MW + 1 x 50 MW = 1080 MW |
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Dam |
Composite Dam (Concrete Gravity + CFRD), 365.33m long, 129.97m high |
| Spillway |
Surface Ogee, Sluice Type and Tunnel Spillway |
| Diversion Tunnels |
5 Nos., 14.0 m diameter Horse shoe, Average length of 1160 m each. |
| Pressure Shaft |
5 Nos., of 9.30 m diameter, underground with a vertical shaft |
| Powerhouse |
Underground powerhouse on right bank of Lohit River |
| Powerhouse Size |
228 m (l) x 23 m (w) x 64 m (h) |
| Turbines |
Vertical Francis, 5 units of 206 MW each and 1 unit of 50 MW |
| Tailrace Tunnel |
13.0m diameter horse shoe shaped tunnels & average length of 210m |
| Power Generation |
Design discharge = 1563 cumecs, Net head at Design Discharge = 75.72 m
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Present Status of the Project:
· DPR with a concrete gravity dam was accepted in CEA for detailed examination in February 2011.
· Revised DPR is being prepared with the composite dam and is schedule for submission in January 2012.
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