Table 4: Panan scheme features
Feature |
Description |
Dimensions |
Dam |
Concrete gravity, with central spillway |
101 m height, 150,000 m3 |
Reservoir capacity |
|
1.58 million m3 |
Intake |
Triple intake |
EL 1118m, H = 28m, |
River diversion |
Diversion tunnel and two cofferdams |
Tunnel: 4.5 m dia; L = 435m |
Sedimentation chamber |
Underground chamber to settle out material >0.2mm size. |
L = 200m, W = 16m, H = 23m |
Head Race Tunnel (HRT) |
Modified horse shoe profile on left side of valley |
Diameter = 6m, L = 9092m, with three construction adits |
Surge Chamber |
At end of HRT at crest of ridge |
H = 90m, diameter = 15m |
Penstocks |
Underground |
4 no., steel lines, 2.5 m dia |
Power Station |
Surface |
L = 104m, W= 19.2m. |
Turbines |
4 x 70 MW Vertical Francis turbines |
Installed capacity 290 MW |
Tail water |
Surface channel |
TWL = 752m |
Project head |
|
366m |
|