Preparation of Feasibility Study of Upper Myagdi Hydropower Project (37 MW)

The scope of services will include, but not be limited to, carrying out the following activities:

• Review of previous study reports.


• Topographic survey of headworks site, powerhouse, pipe alignment and access roads whenever necessary.


• Hydrological analysis, development of rating curve and sediment studies.


•  Geological study, surface geological mapping whenever deemed necessary, assessment of construction materials and its necessary lab tests, recommendation/supervision of additional geophysical investigation and drilling works.


• Hydraulic Design and Structural Design of the project components that include:
  
  
  
  • Diversion weir with total length of 27m with weir crest level at 1713 m amsl.
  
  
  • Sizing of Intake orifices (4 nos. of size 3m wide x 2 m high), gravel trap (2 nos. of size 7.3 m wide x 2.4 m high) with headrace pipe (3 m internal diameter)
  
  
  • Underground Settling Basin with double chamber, each length 90 m, width 10 m and total water depth of 5 m including trapezoidal headpond of length 10.2 m.
  
  
  • Headrace tunnel of length 3553.33 m (Excavation size: 3.8 m x 3.8 m, Inverted D-Shaped)
  
  
  • Underground circular Surge shaft of internal diameter 7.5 m with height of 50.82 m from headrace tunnel base.
  
  
  • Optimization and design of 797.96 m long mild steel circular penstock pipe with varying diameter 1.8 m – 2 m and varying thickness 12 mm to 36 mm.
  
  
  • Vertical Shaft of length 130.73 m and steel lined horizontal penstock tunnel of length 123.36 m.
  
  
  • Powerhouse surface type 47.64 m x 15.6 m x 14.55 with provision of 3 units of Pelton turbines, vertical shaft arrangement, Centre Line of Runner at 1394.5 m amsl.
  
  
  • Tailrace is box culvert each of size 5 m x 4.3 m with total length of 81 m.
  
  
  
  


• Preparation of construction schedule.


• Coordination for preparing Environment Management Plan (EMP), Social Management Plan and IEE study.