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Detailed Engineering Design, Tender Document Preparation

Project Title: Junbesi HP

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  • Task: Survey Optmization study deatiled feasiblity study Tender documents detailed engineering design IEE reports Structural desing including Reinforcement detailing

  • Capacity: 5.2 MW

  • Status: Ongoing

Salient features:as per Feasibility Study Report, 2009
Location : Junbesi Khola, Beni VDC, Solukhumbu District, Sagarmatha Zone, Eastern development region of Nepal
Latitude : 27o 33′ 15″ N to 27o 35′ 08″ N
Longitude : 86o 32′ 40″ E to 86o 34′ 29″ E.
Geology
Region : High Himalayan Crystalline Zone
Rock composed : Gneiss, schist, schistose phyllite and quartzite
Geotechnical zoning : Fair to good
Hydrology
Catchment area : 66.80 km2
90% firm flow in the driest month : 1.31 m3/sec
Design flow (Q45) : 2.99 m3/sec
Flood 1 in 100 years : 218 m3/sec
Weir
Type : Boulder lined
Length : 18.04m
Crest level : 2655.50 masl
Intake
Type : Side intake
Number of orifice : 2
Orifice Size : 2.00 x 1.00 m (w x h)
Sill level upper orifice : 2655 masl
Sill level bottom orifice : 2654 masl
Gravel Trap
Type : Surface
Length : 5.70 m (including transition)
Width : 4.60 m
Height : 4.5 m
Normal water level : 2654.35 masl
Spillway level : 2655.00 masl
Gravel Flushing Canal
Type : Surface
Length : 40.50 m
Breadth : 1.40 m
Height : 2.00 m
Number of gates : 2 nos.
Canal from Gravel Trap to Settling Basin
Type : RCC rectangular culvert
Length : 11.32 m
Bottom width : 4.60 m
Height : 1.00 m
Settling Basin
Type : Surface
Size : 47.10 x 11.10 x 4.23m (l x b x h)
No. of chambers : 2
Normal water level : 2654.14 masl
No. of flushing channel : 2
Sediment Flushing Channel
Type : Surface
Length : 13.15m
Breadth : 1.20m
Height : 1.00m
No. of gates : 2
Headrace Pipe
Material : Steel
Length : 2983.8 m
Internal diameter : 1500 mm
Thickness : 8 mm
Saddle supports : 234 nos.
Anchor blocks : 37 nos.
Forebay
Type : Semi surface RCC rectangular tank
Width : 11.50 m
Length : 11.50 m
Height : 3.00 m
Balancing Tank
Type : Surface RCC rectangular tank
Width : 9.00 m
Length : 9.00 m
Height : 3.00 m
Penstock Pipe
Material : Steel
Length : 438.6 m
Internal diameter : 1500 mm
Thickness : 8-28 mm
Anchor blocks : 46 nos.
Saddle supports : 234 nos.
Y-Bends : 1 no.
Branching : 2 pipes of 950 mm internal diameter, 10.30 m long
Powerhouse
Type : Surface
Length : 23.00m
Breadth : 10.50m
Height : 12.00m (from foundation level)
Number of generating units : 2 (Two) each 2.6 MW
Turbine type : Horizontal Axis Pelton Turbine
Installed capacity : 5.2 MW
Turbine level : 2434.00 masl
Tailrace
Type : Rectangular box closed duct and open channel
Length of closed duct : 31.80 m
Transmission Facilities
Transmission line Length : 9 km from Powerhouse to to proposed Salleri Sub-station
Voltage level : 33 KV
Power and Energy
Gross Head : 221.5 m
Net Head at design discharge : 212.62m
Installed Capacity : 5.2 MW
Gross Annual Energy : 34.55 GWh
Net Annual energy : 32.30 GWh
Wet Energy : 25.66 GWh
Dry Energy : 6.64 GWh
Access road
Length : 9.00 Km (Upgrading)
Financial Indicators:
Energy rate, NPR/KWh : NPR 4.62/KWh at base year** and 3% escalation up to 9 times from generation year (From the dry season rate of NPR7.0 and wet season rate of NPR 4.0)
Base Case:
Benefit Cost ratio (B/C ratio) : 1.22
Internal Rate of Return, (IRR) : 14.00%
Return on Equity (FIRR, 70/30 ratio) : 17.25%
Net Present worth, (NPV, at 10% discount rate) : 242 MNPR
Project Development Cost : 838 MNPR
Cost per kW, USD/kW (at 1 USD=78 NPR) : 2066.00 USD/KW
Recent News
recentImage Contract Agreement with Dhading Ankhu Khola Hydro Pvt. Ltd. for Review of Feasibility Study Report and Technical Support
Sanima Hydro and Engineering (P.) Ltd signed a contract agreement with Dhading Ankhu Khola Hydro Pvt. Ltd. for Review of Feasibility Study Report and Technical Support of Upper Ankhu Khola Hydropower Project (38 MW) on 16th April 2021. The project is located in Dhading district, Bagmati Province of Nepal. It has been planned… Read More »
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