FORM-3
            SALIENT  FEATURES  OF  HYDROELECTRIC  PROJECT
NAME OF COMPANY: HPSEB  
NAME OF POWER STATION:2x1.50MW Gumma Power House.  
1. Location          
State/Distt. Himachal Pradesh Distt.  Shimla  
River Gumalti Khad      
     
2. Diversion Tunnel    
Size, shape Not applicable      
Length          
     
3. Dam    
Type Not applicable      
Maximum dam height          
4. Spillway    
Type Natural flow I.e with out gate    
Crest level of spillway 2026.10 Mtrs. above sea level    
5. Reservoir    
Full Reservior Level (FRL) N.A        
Minimum Draw Down Level (MDDL)          
Live storage (MCM)          
6. Desilting Arrangement    
Type Vortex TypeOpen surface Chamber with 3 No valves
Number and Size 32.5x3.6 mtrs.      
Particle size to be removed(mm) up to 0.2 mm      
7. Head Race Tunnel    
Size and type 494 Mtrs1.5x1.5 Mtrs D Shape    
Length          
Design discharge(Cumecs) 2.30 Cumecs.      
8. Surge Shaft    
Type Rectangular type 28x6x4 mtrs. surge tank.  
Diameter nil        
Height 4.00 Mtrs.        
9. Penstock/Pressure shafts    
Type MS iron sheet welded circular    
Diameter & Length 900,700, and two branches,422 Mtrs long  
10. Power House    
Type Surface type      
Installed capacity (No of units x MW) 2x1.5 MW        
Peaking capacity during lean period (MW)          
Type of turbine Francis ,Horizontal shaft    
Rated Head(M)          
Rated Discharge(Cumecs) 2.30Cumecs      
11. Tail Race Tunnel    
Diameter, shape Rectangular shape      
Length 1.7x1.5Mtrs. Length 36.15 Mtrs.    
Minimum tail water level          
12. Switchyard    
Type of Switch gear out door surface type  
No. of generator bays 2 nos        
No. of Bus coupler bays nil        
No. of line bays Three 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.
 
PETITIONER