• Task: Progress Monitoring and Bill Verification

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• Capacity: 25 MW

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• Status: Ongoing

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Salient Features:
The salient features of the project based on updated documents provided by the Developer on 20 May 2014 are given below:
Location and Type
River	: Khani Khola
River type	: Snow Fed
Location	: Khare and Marbu VDCs, Dolakha District, Janakpur,     Nepal
Type of Project	: Run-of-River (RoR)
Licensed Co-ordinates	: 27º 47′ 48″ N, 86º 20′ 00″ E, 27º 50′ 28″ N, 86º                 22′ 00″     E
Purpose of the project	: To supply for domestic use by connecting to national grid.
Hydrology
Design Discharge (Q40) for 25 MW	: 3.20 m3/s
100 year flood at intake	: 130.12 m3/s
Catchment Area	: 52 Km2
Average Monthly flow (overall)	: 5.14 m3/s
Diversion Weir
Type	: Boulder lined broad crested weir
Normal water level	: 3,388 .00 m amsl
High flood level	: 3391.42 m amsl
Length	: 10.00 m
Weir height	: 3.00 m
Intake
Type	: Side intake
No. of openings	: Two
Size of Opening	: 4 m (W) x 1 m (H)
Design discharge	: 3.84 m3/s
Orifice Invert Level	: 3386.50 m amsl
Under sluice
Type	: Orifice flow
Design Discharge	: 25.93 m3/s
No. Of bay	: 1
Height	: 2.2 m
Width	: 2.00 m
Gravel Trap
Normal water level	: 3387.81 m amsl
Gravel	: 9.0 m
Dimension	: 4.0 m (W) x 4.7 m (H)
Bed slope	: 1 in 20
Gravel trap flushing system	: Intermittent
Connecting Pipe
Flow type	: Free flow
Diameter	: 1.50 m
Length	: 240 m
Flow depth	: 1.20 m
Slope	: 1 in 175
Design discharge	: 3.52 m3/s
Feeder Tunnel
Support type	: Shotcrete and concrete lined
Flow type	: Free flow
Internal size (W x H)	: 2.2 m x 2.2 m D shaped
Length	: 190 m
Flow depth	: 1.20 m
Slope	: 1 in 255
Design discharge	: 3.52 m3/s
Bifurcated Feeder Tunnel
Support type	: Shotcrete and concrete lined
Flow type	: Free flow
Number	: 2
Internal size (W x H)	: 2.0 m x 2.0 m D- shape
Length	: 29.0 m each
Flow depth	: 1.20 m
Slope	: 1 in 775
Design discharge	: 3.52 m3/s
Settling Basin/ Desander
Type	: Underground
Support type	: Shotcrete and concrete lined
Flow type	: Free flow
Particle size	: 0.15 mm
Design discharge	: 3.52 m3/s
No of bays	: Two
Effective dimension	: 48.00 m x 6.00 m x 8.35 m (L x B x H)
Length of Inlet transition	: 10.0 m
Normal water level	: 3385.62 m amsl
Longitudinal slope	: 1 in 50
Flow velocity	: 0.15 m/s
Flushing system	: Hopper type
Flushing gate size (W x H)	: 1.00 m x 1.00m
Flushing pipe	: 600 mm dia. 34 m long
Flushing/Access Tunnel
Size (W x H)	: 4.50 m x 5.0 m D- shape
Length	: 118.0 m
Slope	: 1 in 50
Size of flushing canal	: 1.00 x 1.00 m
Headrace Tunnel
Support type	: Shotcrete and concrete lined
Length	: 1958 m
Slope	: 1 in 9.24
Size	: 2.5 m x 3.0 m D-shape
Type	: Pressure flow
Adit
Length	: 144.30 m
Slope	: 1 in 10
Size	: 2.5 m x 3.0 m D- shape
Surge Shaft (Penstock pipe and Forebay)
Penstock pipe
Internal diameter	: 1.20 m
Length	: 500 m
Thickness	: 8 to 14 mm
Steel type	: X56
Forebay
Shape	: Rectangular
Dimension (L x B x H)	: 10 m x 6 m x 11.34 m
Normal water level	: 3385.59 m amsl
Length of spillway	: 3.00 m
Penstock Pipe
Internal diameter	: 1.20 m
Total length up to 1st bifurcation	: 1319.68 m
Thickness	: 8 to 30 mm
Design discharge	: 3.20 m3/s
Steel type	: X56 and X80
Powerhouse
Type	: Underground
Size (L x B x H)	: 55 m x 13 m x 16.23 m
Turbine centre line elevation	: 2425.85 m amsl
Type of Switchyard	: Outdoor
Main Access Tunnel
Shape	: Inverted D – shaped
Size	: 5 m x 5 m (W x H)
Length	: 217 m
Slope	: 1 in 1000
Tail Race Tunnel
Shape	: Inverted D- shape
Size	: 2 m (W) x 2.2 m (H)
Length	: 210 m
Slope	: 1 in 300
Transmission Line
Length	: 23 km to Singati S/S
Type	: 132 kV
Access Road
Classification	: District road
Surface	: Gravel
Length	: 30 Km
Starting point	: Bhorle
Ending point	: Hanapu (Powerhouse) and HRT outlet portal to Headworks
Formation width	: 5 m
Carriage width	: 3.5 m
Shoulder width	: 0.5 m (both sides)
Side drain	: Angular
Electro-Mechanical Equipment
Turbine type	: Pelton
No of units	: 3
Turbine speed	: 750 rpm
Turbine efficiency	: 90%
Generator type	: A.C synchronous
Rated frequency	: 50 Hz
Rated voltage of generator	: 6.6 kV
Transformer type	: 3-phase ONAN, outdoor
Rated capacity of transformer	: 15,300 KVA.
Power and Energy
Installed capacity	: 25 MW
Gross head	: 963.00 m
Net head	: 940.00 m
Annual energy	: 171.64 GWh.
Annual dry energy	: 34.78 GWh.
Annual wet energy	: 136.86 GWh.
Plant factor	: 78%