| 1. |
Location (Longitudes and latitudes of the points bordering the project area) |
|
| Latitude |
28°19' 20'' N to 28° 21’ 07’’ N |
| Longitude |
84° 25’ 25’’ E to 84° 28’ 00’’ E |
| District |
Lamjung |
| 2. |
Type of Power Plant |
|
| Type |
Run-of-River (RoR) |
| 3. |
Hydrology |
|
| Catchments area at intake site |
154.7 km2 |
| Long term annual average flow |
16.13 m3/s |
| Average minimum flow |
3.09 m3/s |
| Design flood at intake (1 in 100 Years) |
509 m3/s |
| 90% reliability flow of intake |
2.98 m3/s |
| 4. |
General Hydraulics |
|
| Gross head |
328 m |
| Net head |
316 m |
| Design flow |
11.08 m3/s |
| Installed Capacity |
30 MW |
| 5. |
Siuri Tailrace Flow Tapping Arrangements |
|
| 5.1. |
Diversion Canal |
|
| Type |
Rectangular with Slab Cover |
| Size |
25.75 m x 1.5 m x 12 m |
| 5.2. |
Collection Chamber |
|
| Type |
Rectangular |
| Size |
10 m x 5 m x 4 m |
| 5.3. |
Overhead Reservoir |
|
| Type |
Rectangular |
| Size |
5 m x 4 m x 3.5 m |
| 5.4. |
Pumping Arrangement |
|
| Type |
3 nos. Non-submersible Pump (30 m capacity ) |
| Capacity and pumping head |
1.1 m3/sec through 0.6 m dia. Steel pipe, 30 m head |
| 5.5. |
Pipe |
|
| Type |
Surface and buried, Steel pipe |
| Length |
648.091 m |
| Diameter and thickness |
0.6 m, 0.7 m and 8 mm |
| 6 |
Diversion Weir |
|
| Crest length |
17 m |
| Height |
10 m above natural river bed |
| Size of radial gate |
5.5 m x 4.5 m |
| No of radial gate |
2 |
| Thickness of guide wall |
3.0 m |
| Crest elevation |
1384 masl |
| Length of stilling basin |
30 m |
| Sewer gate |
2.5 m x 3.5 m, Crest Elevation 1381.7 masl |
| 7 |
Intake Chamber |
|
| Type |
Side intake |
| Size of opening |
7 m x 1.5 m (2 nos.) |
| Coarse trash rack |
7 m wide and 1.5 m high, 2 nos. |
| 8 |
Intake Tunnel |
|
| Type |
D-shaped RCC |
| Size |
4 m x 4 m |
| Length |
240.27 m |
| 9 |
Settling Basin (Underground) |
|
| No of bays |
Single |
| Nominal size of trapped particle |
0.2 mm |
| Trap efficiency |
93% |
| Settling chamber outlet cross section |
9.14 m2 |
| Settling chamber inlet tunnel cross section |
8.04 m2 |
| Length of inlet transition |
15 m |
| Length of uniform section |
60 m |
| Length of outlet transition |
10 m |
| Width of uniform section |
8.0 m |
| Depth |
10 m (Average) |
| 10 |
Headrace tunnel |
|
| Shape |
Inverted D-shaped |
| Length |
3937 m |
| X-Section |
3.2 m wide x 3.2 m high |
| Cross-sectional area |
9.14 m2 |
| 11 |
Naiche Tunnel Adit – 1 |
|
| Shape |
Inverted D-shaped |
| Length |
176 m long including curve |
| X-Section |
3.2 m wide x 3.2 m high |
| Cross-sectional area |
9.14 m2 |
| 12 |
Surge Shaft1 |
|
| Type |
Vertical shaft (Underground) |
| Internal diameter |
5.0 m |
| Height of surge shaft |
29.60 m |
| Connecting Conduit Size |
Circular with 3.2 m dia. and 6.6 m Height |
| 13 |
Surge Shaft Adit -2 |
|
| Shape |
Inverted D-shaped |
| Length |
65 m |
| X-Section |
3.2 m wide x 3.2 m high |
| Cross-sectional area |
9.14 m2 |
| 14 |
Ventilation Adit |
|
| Shape |
Inverted D-shaped |
| Length |
30 m |
| X-Section |
3.2 m wide x 3.2 m high |
| Cross-sectional area |
9.14 m2 |
| 15 |
Penstock |
|
| Type |
Surface and buried steel penstock |
| Diameter |
1750 mm to 2000 mm |
| X-Length of surface penstock |
774 m |
| Length of Vertical shaft and horizontal portion before Bifurcation |
Inclined buried in concrete and surface 160 m before bifurcation support plate thickness 68 mm |
| Type |
Surface and buried steel penstock |
| 16 |
Powerhouse |
|
| Type |
Surface |
| Size |
49 m long, 22.6 m wide and 27.2 m high |
| 17 |
Tailrace Canal |
|
| Shape |
Rectangular, covered |
| Size (B X H) |
3.10 m x 2.10 m |
| Length |
25 m |
| Slope |
1 in 500 |
| 18 |
Turbines |
|
| Type |
Pelton turbine |
| Turbine axis elevation |
1046.00 masl |
| Turbine rated output |
16063 kW x 2 |
| Turbine efficiency |
91.10% |
| No of units |
2 Nos. |
| Running Speed |
500 rpm |
| Tail water level |
1043.27 masl |
| Max. discharge |
2 X 5.54 m3/s |
| 19 |
Generators |
|
| Type |
Brushless Synchronous |
| Capacity |
18.331 MVA |
| Voltage |
11 kV |
| Power factor |
0.85 |
| Operating range |
0.85(lag)- unity - 0.85(lead) |
| Efficiency |
97% |
| 20 |
Transmission Line |
|
| Length |
9 km including 3 km addi-tional (along the same locus till Tunikharka to third tower of Bhulbhule-Middle Marsyangdi TL project) |
| Voltage |
132 kV |
| No. of Circuits |
Double |
| Configuration |
Three phase, six wire |
| Tower Type |
Steel lattice Tower |
| 21 |
Transformer |
|
| Type |
Single phase, 4 no. |
| Rating |
13.3 MVA |
| Vector group |
YNd11 |
| Power factor |
0.85 |
| Voltage ratio |
11/132 ±10% in step of 2.5 |
| Frequency |
50 Hz |
| Efficiency |
99% |
| 22 |
Energy Generation |
|
| Mean annual energy per year |
172.14 GWh |
| Dry energy |
29.15 GWh |
| Wet energy |
147.43 GWh |
| 23 |
Access Road |
|
| Road Class |
District Rural Road Class 'A' (DRRA) |
| Beshishar-Manang road to Bridge site at Marsyangdi River |
447 m |
| Bridge Span (Bailey Bridge) |
52 m |
| From Bridge site to Headwork’s site |
10.615 km |
| From Thulobeshi to Surge shaft |
2.393 km |
| Total length |
13.50 km |
| 24 |
Construction Period |
4 Years |
