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| Demwe Lower Hydroelectric Project (1750MW) |
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| Client: |
| Athena Demwe Power 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 located in District Lohit and 1Km from Parasuram Kund. |
| Total Catchment area at Dam site |
20,560km2
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| Installed Capacity |
5 x 342 MW & 1 x 40 MW (1750 MW) |
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Dam |
Concrete Gravity Dam, 171m high, 467.90m length at top. |
| Spillway |
Ogee with breast wall |
| Diversion Tunnels |
Four - 14 m diameter tunnels on the right bank and 1 No 6 m diameter on the left bank, circular shaped. Length of 14 m diameter tunnels varies from 1080 to 1175m and the length of 6m diameter tunnel is 850m. |
| Power Intake |
Rectangular forebay type with inclined trash rack on right bank of Lohit River About 25m to 180m upstream of dam axis. It is 160m long, 8.2m to 15m wide and 45m high. |
| Pressure Shaft |
5 Nos. 10.0m diameter, underground. The average length of the pressure shaft is 773m including 86m vertical shaft. The steel liners of varying thickness of 28mm to 36mm have been provided. |
| Tailrace |
Open channel, 165m wide, 130m long. |
| Powerhouse |
Surface powerhouse on right bank of Lohit River about 560m downstream of dam axis. |
| Turbines |
5 No's. Vertical Francis rated at 342 MW with 10% continuous overload capacity and 1 No. Vertical Francis rated at 40 MW with 10% continuous overload capacity |
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