FORM-3
            SALIENT  FEATURES  OF  HYDROELECTRIC  PROJECT  
NAME OF COMPANY: HPSEB  
NAME OF POWER STATION:   1.75 MW  Chaba Powerhouse   
1. Location          
State/Distt. Himachal Pradesh Distt. Shimla  
River Nauty Khad TRIBUTORY OF RIVER SATLUJ
     
2. Diversion Tunnel    
Size, shape 28.50X12.50X1.80 MTRS.    
Length          
     
3. Dam    
Type Nil    
Maximum dam height nil        
     
4. Spillway    
Type nil        
Crest level of spillway nil        
     
5. Reservoir    
Full Reservior Level (FRL) 12'(3.658 Mtrs)      
Minimum Draw Down Level (MDDL) 5' (1.52 Mtrs)      
Live storage (MCM) 18182 Cum      
     
6. Desilting Arrangement    
Type Tanks        
Number and Size 3, uneven shape      
Particle size to be removed(mm) 4.75 mm        
     
7. Head Race Tunnel    
Size and type Uneven & finishec, Trapizodical    
Length 235 Mtrs        
Design discharge(Cumecs) 1.06 (37.4 Cusecs)      
     
8. Surge Shaft    
Type Tank type        
Diameter 4.90x4.40 Mtrs      
Height 8.60 Mtrs.        
     
9. Penstock/Pressure shafts    
Type Surface steel pipe (5 Nos)0    
Diameter & Length 42 cms 7 432 Mtrs      
           
10. Power House    
Type Surface        
Installed capacity (No of units x MW) 1.75 MW (3x250KW+2x500KW)  
Peaking capacity during lean period (MW) nil        
Type of turbine Pelton- Horizontal type    
Rated Head(M) 165 Mtrs.        
Rated Discharge(Cumecs) 37.4 cusec.      
     
11. Tail Race Tunnel    
Diameter, shape U shape channel      
Length 4.50 to 14.20 Mtrs      
Minimum tail water level          
     
12. Switchyard    
Type of Switch gear VCB &OCB  
No. of generator bays 3        
No. of Bus coupler bays 2        
No. of line bays 3        
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.
 
PETITIONER