Salient Features

SALIENT FEATURES OF KIRU HYDROELECTRIC PROJECT (624 MW)

S.NoSalient FeaturesKIRU HEP (624 MW)
1 Type of Scheme Run of River Scheme
2 Location
  State Jammu & Kashmir
District Kishtwar
River Chenab
Latitude 33°20'37'' N
Longitude 75°57'34'' E
Location of Dam Near village Kiru/Patharnakki
Location of Power House Left bank (near village Kiru)
Nearest Rail Head Udhampur
Nearest Airport Jammu
3 Hydrology
  Catchment area at diversion site 10225 Sq. Km
Design Flood 10196 cumec
Location of Catchment  
Latitude 32°6' N-33°39'N
Longitude 75°55 E-77°48'E
4 Reservoir
  Full Reservoir Level (FRL) EL. 1515.0 m
Maximum Water Level EL. 1515.0 m
Minimum Drawdown Level (MDDL) EL.1504.0 m
Gross Storage at FRL 41.50 Mcum(33644.60 Acre feet)
Live Storage 10.5 Mcum(8512.49 Acre feet)
Area under submergence at FRL 1.03 Km² / 103 hectare
5 Dam
  Type Concrete gravity Dam
Length of dam at top 193.0m
Elevation of top of dam EL.1517.0m
River Bed Level EL 1394.0m
Maximum Height above river bed 123m
Maximum Height above deepest foundation level 135m
6 Spill Way Lower Spillway Upper Spillway
  Type Orifice Crest
Width of Spillway 62m 31m
No. Of Bays 4 No. 2 No.
Crest Level of Spillway EL 1467.50 m EL 1498.4 m
No. & Size of Openings 4 nos., 9m (W)×12.5m(H) 2 nos., 9m (W)×16.6m(H)
Discharge Capacity at FRL 10200cumec
7 River Diversion
a) Coffer Dam
  Type Rockfill with central clay core
Top of Upstream coffer dam EL 1418.0 m
Top of Downstream coffer dam EL. 1400.0m
b) Diversion Tunnel
  No, Diameter,Shape 1 No; 9.0m, Horse- Shoe Shaped
Length 700m
Diversion Discharge 1033 cumec
8 Intake Structure
  Number 4 No.
Size of openings 5.5 m × 5.5 m
Invert Level EL. 1490.3m
9 Energy Dissipation Arrangement
  Type Ski- Jump Bucket with performed plunge pool
Size 50.0m (L) x 57.5 m(W)
10 Outlet for Environmental Release
  Design Discharge 16.33 cumecs
Size of Gate 2.6m × 2.0m
Crest level 1501.90 m
11 Construction Sluice
  Nos. & Size of opening 6 nos, 3.3m(W)×5m(H)
Crest level EL.1408.0m
Length 145m each
12 Pressure shaft/Penstock -
  No.& Diameter 4 no., 5.5m (internal)
Shape & Type Underground circular steel lined
Design Discharge (each Penstock) 146.5 cumec
Length 316.0m to 322.0m
13 Power House Cavern
  Type Underground
Installed Capacity 624 MW (4 × 156)
Type of Turbine Vertical Francis
Net Rated Head 117.98 m
MIV Dia and Type 4.7 m dia butterfly valve
Design Discharge 146.5 cumec (each unit)
Cavern Size 182m(L)×23.6m(W)×51.2m(H)
14 Transformer cum Draft tube gate cavern
  Cavern Size 137.0m(L)×17.0m(W)×15.0m(H)
15 Tail Race Tunnel
  No.& Type 4 Nos, concrete lined
Dia & Shape 7.0m, horse shoe shaped
Design Discharge 146.5 cumec (each)
Length varies from 165.0m to 190.0m
16 TRT outlet
  Number 4 nos.
Size of opening 5.55 m x 7.0 m
Weir crest level EL. 1385.0m
Deck level EL. 1400.0m
Minimum TWL in River EL.1387.58m
Normal TWL in River (All operating units) EL 1388.24 m
Maximum TWL in River (PMF) EL 1397.1 m
17 Power Generation
  Annual Energy Generation in 90 % dependable year 2272.02 MU
Plant Load Factor 44.49%
18 Peaking Hours 2.7 Hours
19 Tariff
  1st year Tariff Rs. 4.27/unit
Levelised Tariff Rs. 4.64/unit
20 Project Cost Rs. 4287.59 Cr (July 18 PL)