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| Introduction : |
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The Government of Sikkim as a part of national drive for the development of Hydro Potential of the country has awarded Rangit Stage-IV Hydro Electric Project to Jal Power Corporation Limited on 1st Nov. 2004. An agreement for setting up of Rangit Stage-IV Hydro Electric Project was signed with the Govt. of Sikkim on 9th December, 2005 on Build, Own, Operate and Transfer (BOOT) basis under joint sector with the State Government through Sikkim Power Development Corporation (SPDC). The project, a Run of the River (ROR) scheme, envisages installation of 3 no.s Francis Turbine driven Generating Units of 40 MW each at a rated head of 103.67m in a surface Power House. |
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| Layout Plan : |
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The project is located in West Sikkim district of Sikkim. Location map and general layout of the project are given below. |
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| Exhibit-I |
Exhibit-II |
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| Project Highlight : |
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Rangit Stage-IV Hydro Electric Project was identified as a part of the master plan evolved in 1974 for the development of hydro power potential of Teesta and Rangit rivers of Sikkim. Detailed field investigations and office studies were taken up on this project by the Central Water Commission (CWC) in 2003. A Detailed Project Report (DPR) has been brought out by CWC in August, 2006. The project is a run-of the river (ROR) scheme, envisaging construction of a 44m high Concrete Gravity Dam near Reshi, a 6.5km long water conductor system comprising of intake, desilting basin, head race tunnel, surge shaft, penstock and a surface power house having an installation of 3 Francis Turbine driven Generating units of 40MW each at a rated head of 103.67m. Rangit Stage-IV Hydro Electric Project has been accorded Techno-Economic Clearance (TEC) by Central Electricity Authority (CEA) on 6th July, 2007.
The project has been accorded environmental clearance on 16th May, 2007 and Forest clearance on 26.12.2007 by the Ministry of Environment & Forests. Land acquisition has been completed. Financial closure has been achieved. PPA and BPTA have also been signed. |
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| PRESENT STATUS OF PROJECT (AS ON 28.02.10) |
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Components where work completed.
1 Road Diversion Tunnel completed. (Total Length 310 m)
2 Approach Road to Steel Bridge for approaching left Bank of Dam completed.
3 Approach Road to Left Bank of River completed.
4 Approach Road to Surge Shaft completed. (Total Length 705 m)
5 Adit -1 has been completed. (Total Length 200 m)
6 Adit -2 has been completed. (Total Length 151.5 m)
7 Adit to Intake Chamber completed. (Total Length 196 m)
8 Letter of Award for Generating Units including cooling water system, drainage& dewatering system, compressed air system and SCADA has been issued to M/s ANDRITZ Hydro on 28.08.09.
9 Work for construction power has been awarded in March, 2008. Installation of Transformers (4 Nos. – 500 KVA and 1 No. – 1000 KVA) and required 11KV line(12km) has been completed to meet construction power requirements at Power House, H.R.T., Road Diversion Tunnel &Dam etc. DG sets are also being used to meet construction power requirements. |
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Components where work in progress.
1 Approach Road To Power House in progress. (Total Length 410 m)- Slope stabilization above P.H. under progress.
2 Excavation of HRT in about 378.75 m has been completed. (Total Length 6488 m) – Face1-131m, Face 2- 91 m, Face 3- 156.75 m.
3 River Diversion work and right abutment stripping work are in progress.
4 Excavation of Surge Shaft in about 2m depth has been completed. (Total Height 59m & 18m dia.)
5 NIT for Balance of Plant (E&M) has been issued on 14.08.09 and Bids were received/ opened on 27.11.09. Bids have been received from five bidders i.e. M/s Siemens, M/s L&T, M/s ABB, M/S Andritz Hydro, M/s EDCIL and the same are under evaluation. |
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