ANNEXURE-III SALIENT FEATURES OF DUGAR HYDRO ELECTRIC PROJECT. Himachal Pradesh. Latitude. Longitude Nearest Railhead; Udhampur (J&K)

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1 ANNEXURE-III SALIENT FEATURES OF DUGAR HYDRO ELECTRIC PROJECT Project Location State District River Vicinity Latitude Longitude Nearest Railhead; Udhapur (J&K) Hiachal Pradesh Chaba Chenab River Luj village 33 o N 76 o E 270 k Hydrology Catchent Area k 2 7,823 Snow fed Catchent Area k 2 4,458 Total annual inflow in 90% dependable year ,161 Average discharge in 90% dependable year 3 /s Average Annual Rainfall Flood Discharge for River diversion (~Q25 ) Non 3 /s 870 onsoon Flow Flood Discharge for River diversion (~Q25 ) onsoon 3 /s 2,700 Flow Probable Maxiu Flood (PMF) 3 /s 9,425 Reservoir Full Reservoir Level (FRL) asl Miniu Draw Down Level (MDDL) asl Design Flood Level (corresponding to PMF) asl Gross Storage at FRL Gross Storage at MDDL Live Storage

2 Da and Spillways Concrete Gravity Design Flood (PMF) 3 /s 9,425 Maxiu Water Level (MWL) asl Full Reservoir Level (FRL) asl Average River Bed Level at Da Axis asl Bridge Deck Level asl Da Top Level asl Height of Da (Above deepest foundation level) Length of Da Crest Lower level spillway Crest elevation asl Gate type and Nuber of Gates --- Radial, 5 Size (W X H) 8.2 x 11.0 Energy Dissipation Syste --- Flip Radius of Bucket 32 Lip Level of Bucket asl Upper level spillway Crest elevation asl Gate type and Nuber of Gates --- Radial, 2 Size (W X H) 8.2 x 11.7 Energy Dissipation Syste Radius of Bucket --- Flip bucket Lip Level of Bucket asl 2045 River Diversion and Diversion Tunnel (DT) No. of Diversion Tunnels Location Diversion flood (non-onsoon) 3 / Diversion flood (onsoon) 3 /s 2,700.0 Diaeter 10.5 Average Length Right Bank Inlet and outlet invert Elevations asl ,

3 Upstrea Cofferda Elevation asl Height of upstrea Cofferda ~29.0 Downstrea Cofferda Elevation asl Height of downstrea Cofferda asl ~10.5 DT intake gate type and nuber in each DT --- Fixed wheel type, 2 Size of diversion tunnel gates (W X H) x 10.5 POWER INTAKE (ON LEFT BANK) Power Intakes for ain powerhouse Nuber of openings -- 2 Design discharge per intake 3 /s Intake Gate -- Fixed Wheel - Sill elevation asl Diensions (W x H) 7.0 X 8.1 Tunnel intake for auxiliary powerhouse Nuber of openings -- 1 Design discharge 3 /s Intake Gate -- Fixed Wheel - Sill elevation asl Diensions (W x H) 4.4 x 5.6 PRESSURE TUNNEL/ PRESSURE SHAFT Main Pressure Tunnels/shafts No. of Pressure Tunnels/ Shafts Design Discharge Internal Diaeter of Concrete Lined Pressure Tunnel/Shaft 3 /s Length of Concrete Lined Pressure Tunnel/Shaft 183.5, 161 Thickness of Concrete Lining 500 Internal Diaeter of Steel Lined Pressure Tunnel 6.70 Quality of Steel -- ASTM A- 537 Class -2 Length of Steel Lined Pressure Tunnel (each) 68, 78.5 No. of Unit Pressure Tunnels --- 4

4 Internal Diaeter of Unit Pressure Tunnel 4.75 Length of Unit Pressure Tunnel (each) 28.4 Auxiliary Pressure shaft/tunnel No. of Pressure Tunnels/ Shafts Design Discharge 3 /s Internal Diaeter of Concrete Lined Pressure Tunnel/Shaft 5.60 Length of Concrete Lined Pressure Tunnel/Shaft Thickness of Concrete Lining 200 Internal Diaeter of Steel Lined Pressure Tunnel 4.10 Quality of Steel -- ASTM A- 537 Class -2 Length of Steel Lined Pressure Tunnel 73.7 No. of Unit Pressure Tunnels Internal diaeter of Unit Pressure Tunnels 2.40 Length of Unit Pressure Tunnel (each) 20 POWERHOUSE Main powerhouse (4 x 95 MW) Size (L X W X H) including auxiliary powerhouse Gross Head Underground 163 x 22.5 x Length of Main Access Tunnel (7 D Shaped) 665 Turbine type -- Francis Nuber of units -- 4 Turbine setting elevation asl Design discharge per unit 3 /s Rated head Installed capacity per Unit MW 95 Main Inlet valve type Butter fly type Nuber -- 4 Diaeter 4.0 Generator type 3 Phase Nuber Noinal speed rp Voltage / Frequency kv / Hz 13.8/50 Power factor cos φ 0.9

5 Noral Tail Water Level asl Miniu Tail Water Level asl Probable axiu Tail Water Level asl Auxiliary powerhouse (3 x 23 MW) Underground Gross Head Turbine type -- Francis Nuber of units -- 3 Turbine setting elevation asl Rated discharge per unit 3 /s Rated head Installed capacity per Unit MW 23 Main Inlet valve type Butter fly type Nuber -- 3 Diaeter 2.05 Generator type 3 Phase Nuber Noinal speed rp 500 Voltage / Frequency kv / Hz 11/50 Power factor cos φ 0.9 Noral Tail Water Level asl Miniu Tail Water Level asl Probable Maxiu Tail Water Level asl TRANSFORMER CAVERN --- Underground Cavern Size (L x W x H) 155 x 14 x 20.5 Transforers for 100 MW achines phase Location --- Indoor Nuber Unit capacity MVA 43 Voltage ratio kv / kv 13.80/400 Transforers for 10.5 MW Auxiliary achine phase Location --- Indoor Nuber Unit capacity MVA 25 Voltage ratio kv / kv 11/400

6 SURGE CAVERN/DRAFT TUBE GATE OPERATION CHAMBER Underground Finished size (L x B x H) 118 x 22 x 47 Nuber of copartents 4 Size of each copartent (L x B) 28 x 22 Operation platfor level asl Botto of surge chaber asl TAIL RACE TUNNELS (TRT) Tail Race Tunnels for Main Plant (4 x 95 MW) Nuber of Main TRT s 2 Finished diaeter of Main TRT s Noinal discharge 3 /s 8.1 (Circular) Length of TRT Length of TRT No. of draft tube tunnels 4 Length of each draft tube tunnel 87.4 Finished diaeter of draft tube tunnels 5.7 (Circular) No. of unit tailrace tunnels 4 Length of each unit tailrace tunnel Finished diaeter of unit tailrace tunnel 5.7 (Circular) TRT Gates Nuber 4 Vertical Size (W x H) 4.5 x 5.7 Sill elevation asl Tail Race Tunnels for Auxiliary plant (3 x 23 MW) Nuber 1 Finished diaeter Noinal discharge 3 / 5.6 (Circular) Length of TRT No. of draft tube tunnels 2 Length of draft tube tunnel 19, 24 Finished diaeter of draft tube tunnels 3.5 (Circular)

7 TRT Gates No. 1 Vertical fixed wheel Size (W x H) 2.75 x 3.5 Sill level asl POWER BENEFITS Main Plant (4 x 95 MW) Annual Energy (in 90% dependable year) GWh Design Energy (at 95% plant availability) GWh Auxiliary Plant (3 x 23 MW) Energy with 95% plant availability GWh