Funding Agency: ICTC / Blue Energy P. Ltd
Client: Upper Solu hydro Electric Company Pvt.Ltd (USHEC) ; Narayanchaur, Kathmandu
Date: Oct. 2014 – June 2018
Solu hydroelectric Project (SHEP) is located in Solu Khola in Salleri and Garma VDCs of Solukhumbu District (Project Coordinates: Northing: 27°26’42” to 27°28’48”/ Easting: 86°34’06” to 86°35’00”) in Sagarmatha Zone in the eastern Development Region of Nepal. The project has an installed capacity of 23.5 MW.
i. SHEP is a run of the river Development. The Design discharge of the plant is 12.26 m3/s
ii. The gross Head is 229.3 m. The design flood level is 1998.33 meters above sea level. The water flows through a concrete open culvert type approach canal which is 70 m in length. The headworks also includes components like Gravel Traps, Setting Basin and Headpond The water then flows through a side intake, a component of headworks. Water not going into the intake flows over the diversion weir (free overflow with spillway) of length 26 m and height 5.5 m.
iii. Water is conveyed to the powerhouse through penstocks. There are two types of penstock pipes used, namely, low pressure penstock pipes and high pressure penstock pipes. The low pressure penstock pipes are circular steel pipe, which are buried. They have an internal diameter of 2.5 m. and a thickness of 10 mm. Total length of low pressure penstock pipes is 3855 m. The high pressure penstock pipe is also a circular steel type, but with an internal diameter of 1.9 m. its thickness is 9-29 mm and is 397 m long. The Powerhouse is of surface type with Dimension: 34.0 m (L) x 19.5m (B) x 31.9 m (H). There are two Francis Turbines with a Design discharge per unit: 6.13 m³/sec. There are two suspended type generators, with a rated output of 13.82 MVA. The tailrace canal is concrete culvert of length 65 m. however the canal is not closed in all the sections, with a total length of 20 m being open canal. The open canal is 5.7 m wide and7 m wide.
iv. The Surge Tank (with inclined surge shaft made of steel pipe and upper chamber made of Concrete Structures) is Orifice type, Variable area chamber, Inclined.
Switchyard (132 KV transmission line from the switchyard of the powerhouse to nearby Grid Substation for power evacuation.) The Transmission Line is 3 km in length. These are single circuit with double circuit towers (No. of circuits). There are 7 transformers with 2 banks of 3 single phase transformer and one spare). The rated capacity of the transformer is 5 MVA. The Grid Inter Connecting Substation is at Lamane. The construction period for the project is 4 years.
Overall Services provided:
Total Management Services Pvt. Ltd in Joint Venture with ITECO Nepal Pvt. Ltd is responsible for providing following services.
A. Detail Design and construction drawings
B. Construction Supervision
C. Procurement/Contract Management
D. Project Management
E. Environmental Safeguards
F. Social Safeguards
G. Post-Construction Services
i. Check the completed work and notify the contractor and the client of an defect in the construction work or the plant which requires rectification, before the Defects Liability Periods.
ii. Prepare Final Performance Certificates based on the Final Statement of the contractors.
2. Operation And Maintenance Manuals
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