FORM-3
            SALIENT  FEATURES  OF  HYDROELECTRIC  PROJECT
NAME OF COMPANY: Himachal Pradesh State Electricity Board
NAME OF POWER STATION: - 3 x 42 MW Larji Hydel Project
1. Location          
State/Distt. Himachal Pradesh/Mandi
River Beas
   
2. Diversion Tunnel  
Size, shape 8.80 m. dia.
Length 320 m.
   
3. Dam  
Type Concrete Barrage
Maximum dam height 26.50 m.
   
4. Spillway  
Type 5 nos. 11 x 12 m Radial Gates
Crest level of spillway 951.00 m
   
5. Reservoir  
Full Reservior Level (FRL) 969.50 m
Minimum Draw Down Level (MDDL) 963.00 m
Live storage (MCM) 230 Hectare metre.
   
6. Desilting Arrangement  
Type Under ground
Number and Size 4 chambers of 127 X 16 m each.
Particle size to be removed(mm) 0.40 mm and above.
   
7. Head Race Tunnel  
Size and type 8.50 m Circular
Length 4119.86 m
Design discharge(Cumecs) 250 Cumecs
   
8. Surge Shaft  
Type Circular Restricted Orifice.
Diameter 37.00 m
Height 71.00 m
   
9. Penstock/Pressure shafts  
Type 3 nos. Underground Circular Steel lined.
Diameter & Length 4.5 m dia., 83.33 m each (Average)
   
10. Power House  
Type Under Ground
Installed capacity (No of units x MW) 3 X 42 MW
Peaking capacity during lean period (MW) 126 MW, 2.00 hrs. morning & 2.98 hrs. evening
Type of turbine Vertical Francis
Rated Head(M) 56.84 m
Rated Discharge(Cumecs) 250 cumecs.
   
11. Tail Race Tunnel  
Diameter, shape 10.00 m dia. D - shaped
Length 258.00 m
Minimum tail water level 894.74 m
   
12. Switchyard  
Type of Switch gear SF6 GIS
No. of generator bays 3 nos.
No. of Bus coupler bays 1 no.
No. of line bays 4 nos. lines & 1 no. Station Transformer Bays
Note: Specify  limitation on generation during specific time period on account of restriction(s) on
water use due to irrigation, drinking water, industrial, environmental considerations etc.
Restriction during flooding conditions: - Power house to be closed if the discharge in the river exceeds 2000 cumecs.
PETITIONER