| GENERAL |
|---|
| 1 | Name of Project | Bhotekoshi-5 Hydroelectric Project (BH-5) | |
| 2 | Type of the Scheme | Cascade (MBKHEP-102MW) | |
| 3 | Gross Head | 146.77 | m |
| 4 | Net rated Head | 136.01 | m |
| 5 | Installed Capacity | 62 | MW |
| 6 | Average Annual Energy after Outage | 339.098 | GMh |
| PROJECT LOCATION |
|---|
| 1 | Latitude | 27°45’33” to 27°49’08” N | |
| 2 | Longitude | 85°51’49” E to 85°54’14” E | |
| 3 | Project Area | Sindhupalchowk, Province-3 | |
| 4 | Intake Site | Jammu-9, Bahrabise Municipality | |
| 5 | Powerhouse Site | Mankha-8, Balefi Rural Municipality | |
| 6 | Project Access | 75 km from Kathmandu (Arniko Highway) | |
| TECHNICAL INFORMATION |
|---|
| 1 | Hydrology | | |
| | Catchment Area (MBKHEP | 2284 | Km2 |
| | Design Discharge (Q 42.5 ) | 50.8 | m3/s |
| | Design flood at headpond (1 in 100 Years) | 1387 | m3/s |
| | Design flood at tailrace (1 in 100 Years) | 1544 | m3/s |
| 2 | Diversion Weir | No diversion weir | |
| 3 | Siphon Intake | Tailrace of MBKHEP. BH-5 HEP will provide gate with clear opening of 4.4 m X 4.4 m | |
| | Bed Level | 905.01 | masl |
| 4 | Siphon | | |
| | Type | Box Culvert | |
| | Clear Opening | 4.4 x 4.4 | m2 |
| | Length | 87.80 | m |
| | No. of Vertical Bends | 4 | |
| | No. of Horizontal Bends | 3 | |
| 5 | Settling Basin | No settling Basin | |
| 6 | Approach Culvert | | |
| | Length | 71.09 | m |
| | Internal Dimension | | |
| | Width | 4.40 | m |
| | Height | 4.40 | m |
| 7 | Headpond | | |
| | Length | 54.23 | m |
| | Clear Width | 12 | m |
| | Clear Height | 14.35 | m |
| | Free Board | 1.56 | m |
| | Working water level at Headpond | 916.77 | masl |
| | Head Pond invert level at HRT inlet | 903.20 | masl |
| | Top Level of head pond HRT | 919.20 | masl |
| 8 | Emergency Spillway | | |
| | Crest level (concrete) | 916.20 | masl |
| | Crest level (rubber dam) | 916.77 | masl |
| | Length | 308.13 | m |
| | Width | 10 | m |
| | Depth | 4.65 | m |
| | Gradient | 1 in 1200 | |
| 7 | Headrace Culvert | | |
| | Shape | Rectangular | |
| | Length | 14.23 | m |
| | Dimension | 5.2*5.2 | m2 |
| | Invert Level | 903.30 | masl |
| 8 | Headrace Tunnel | | |
| | Shape | Horse-shoe type | |
| | Total Length | 7458.55 | m |
| | Excavation Diameter | 6.3 | m |
| | Finished Diameter | Varies From (5.1 to 6.1) | m |
| | Gradient | 1:425 | |
| | Rock Trap(LXWXD) | 20*8*5 | m3 |
| 9 | Adit Tunnel | | |
| | Shape | D-shaped | |
| | Excavation section size | 4.2*4. 2 | m |
| | Length | 676.5 | m |
| | Gradient | 1 in 240 | m |
| 8 | Surge Tunnel | | |
| | Shape | Horse-shoe Shaped | |
| | Finished Diameter | 5.20 | m |
| | Up surge Level | 935.00 | masl |
| | Down surge Level | 898.00 | masl |
| | Top level including freeboard | 940.00 | masl |
| 9 | Butterfly Valve at Outlet Portal | | |
| | Butterfly Valve at Outlet Portal | 4 | m |
| | Air valve size | Two (Size to be provided by HM supplier) | |
| 8 | Steel Penstock Pipe | | |
| | Type | Circular(Steel) | |
| | Diameter | 4 | m |
| | Length of Penstock Tunnel | 110.40 | m |
| | Length of Surface Penstock Pipe | 322.35 | m |
| | before bifurcation | 300 | m |
| | bifurcation length | 22.35 | m |
| | Steel thickness | 14 to 36 | mm |
| | Ultimate tensile stess of steel | 510 | N/mm2 |
| 9 | Power House | | |
| | Type | Surface | |
| | Size | 43.78*18.80 | m2 |
| | Height from machine floor | 20.11 | m |
| | Control Building size | 24.62*10.1 | m2 |
| | No. of units | 2 | |
| 10 | Trailrace | | |
| | Type | Box culvert | |
| | Tail water level | 769.94 | masl |
| | Size | 60*4.68 | m2 |
| | Slope | 1 in 1200 | |
| 11 | Turbine | | |
| | Type | Vertical shaft Francis Turbine | |
| | No. of units | 2 | |
| | Rated output capacity | 33 | MW |
| | Peak Efficiency | 94% | |
| | Speed | 375 | rpm |
| 12 | Governer | | |
| | Type | Electric Governer | |
| | Adjust for speed drop | Fully automatic hydraulic system | |
| 13 | Generator | | |
| | No of units | 2 | |
| | Efficiency | 97% | |
| | Voltage | 11 | kV |
| | Power Factor | .85 | |
| | Rated output per unit | 37.367 | MVA |
| 14 | Transformer | | |
| | Type | Outdoor, 3 Phase, 50Hz | |
| | Rated Capacity | 35 | MVA |
| | Voltage Ratio | 132kV/11kV | |
| | No of units | Two | |
| | Vector Group | Ynd11 | MVA |
| | Efficiency | 99% | |
| 15 | Transmission Line | | |
| | Voltage Level | 132 kV, Double circuit | |
| | Length | 4 | Km |
| | Conductor Type | ASCR "BEAR" | |
| | From | Powerhouse | |
| | To | NEA Proposed Barhabise substation | |
| 16 | Project Access Road | | |
| | Class | District Rural Road Class "A" (DDRA) | |
| | Length to reach | | |
| | Adit Tunnel | 0.9 | Km |
| | Surge Portal | 1.2 | Km |
| FINANCIALS |
|---|
| 1 | Total Project Cost (including Interest During Construction) | NRs. 11.438 Billion | |
| 2 | Interest Rate (including hedging cost ) | 10% | |
| 3 | Project IRR | 14% | |
| 4 | Project Benefit-Cost Ratio | 1.66 | |
