6) Penstocks 3.25m dia and 965m long to lead a design discharge of cumecs

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Isabella Hicks
6 years ago
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Project: Sorang Hydro Electric Project - 100 MW Overview: M/s.Himachal Sorang Pvt.Ltd.

1 Project: Sorang Hydro Electric Project MW Overview: M/s.Himachal Sorang Pvt.Ltd., Hyderabad, is developing the Run of the River Sorang Hydro Electric Project (100MW) in Kinnaur District of Himachal Pradesh State, on the Sorang stream, a tributary to Sutlej River. The Project consists the Construction of : 1) A Concrete Trench diversion weir 59m long and 7.10m high 2) An intake structure and desilting chamber with control gates 3) A head race tunnel 3.4m dia horse shoe shaped and 1540m long 4) A surge shaft 6.5m dia and 48m deep 5) Penstock tunnel 3.4m dia, 44m long 6) Penstocks 3.25m dia and 965m long to lead a design discharge of cumecs 7) An underground power house 77.50m long x 16.5m wide and housing 2 generating units of 50MW each 8) The short tail race tunnel to discharge the water to the Sutlej river. The power house has 2 Nos.50MW capacity vertical axis pelton wheel turbines operating under a maximum head of 667m and a rated discharge of 8.67 cumecs per unit and vertical axis, synchronous generators. The scheme has indoor Transformers and GIS. The annual generation of 524 Gwhrs will be transmitted through 18kms of 220kV transmission lines to Kotla sub station. Design Group has handled planning and the preparation of DPR and its processing for clearances upto financial closure and is presently handling the Detail Design Engineering including bid preparation for various packages and assistance in fixing up agencies. The Project is to be completed in a period of 3 years. Specifications: SORANG HYDRO ELECTRIC PROJECT-SALIENT FEATURES 1. LOCATION Near village Sorang Dogri i) Latitude in Nichar Tehsil of Kinnaur District of Himachal Pradesh State. a) Diversion Weir N 1 P a g e

2 b) Power House N ii) Longitude a) Diversion Weir E b) Power House E 2. HYDROLOGY i) Total Catchment area sq km ii) Annual Rainfall Average iii) Average annual yield mm Mcum 3. DIVERSION WEIR (Trench Weir) i) Crest level EL m ii) Design Surplusing Capacity 200 Cumecs iii) Design discharge Cumecs (Drawal for Power Generation) iv) Type of Structure Concrete gravity type, Trench Weir v) Maximum height from deepest foundation vi) Length - Total 7.10 m 59.0 m 4. INTAKE & DE SILTING CHAMBER i) Type De-silting Hoppers ii) Length of De-silting Chamber iii) Width m 12.0 m iv) Size of Intake gate (Clear vent size) 4.00m x 4.00m v) Size of Stop log gate (clear vent size) 4.00m x m vi) Normal operating level EL m vii) No. of hoppers 11 2 P a g e

3 5. HEAD RACE TUNNEL i) Length & Diameter of HRT 1540 m long & 3.40 m Dia ii) Shape iii) Type & Thickness of Lining D shape 0.30 m Cement Concrete 6. SURGE SHAFT i) Type & Diameter of Surge Shaft Simple, Circular 6.50 m Dia ii) Height of Surge Shaft iii) Type & Thickness of lining 48m RCC/CC, 300 mm 7. PENSTOCK TUNNEL i) Length & Diameter of Penstock 29 m long, 3.40 m Dia D Shape ii) Invert level of Tunnel at Surge Shaft EL m iii) Invert level at Exit Portal EL m iv) Type & Thickness of Lining Concrete 0.30 m thick 8. INCLINED PRESSURE SHAFT (TUNNEL) i) Length & Diameter of Tunnel 181 m, 3.25 m Dia. Circular ii) Slope of tunnel iii) Type & Thickness of Lining 10 Deg with vertical Concrete 0.50m thick and Steel liner 9. PENSTOCK i) Length & Diameter of Penstock Buried 965 m, 3.25 m dia. ii) Shell Thickness of Pipe Varying from 10mm to 40mm, encased in concrete 10. POWER HOUSE CAVERN 3 P a g e

4 i) Generator floor level EL m ii) Turbine centre line level iii) Service bay level EL m EL m iv) Length of power house m (including S/Bay) v) Width of power house (Cavern) 11.50m vi) Design head (Rated) m vii) Design discharge for 2 units viii) Installed capacity ix) Valve - Length - Width House Cumecs 2 x 50 MW m 6.50 m x) Machine Hall -Length -Width xi) Transformer Bay - Nos - Length - Width xii) Finishing - Arch - Sides - Floor m m m 10.00m RCC Lining Shotcreting Ironite CC Flooring / Mosaic tile flooring 11. TAIL RACE TUNNEL i) Length & Diameter m, 4.5m, D Shape ii) Bed level of the Tunnel at the beginning iii) Thickness of lining Bed and Sides EL m 0.3 m Concrete 12. ELECTRO MECHANICAL EQUIPMENT A) Turbines i) No. & Type of Turbine 2 Nos., Vertical, Pelton Wheel ii) Rated Head m 4 P a g e

5 iii) Rated Turbine output iv) Rated Speed kw Each 600 rpm v) Rated discharge / unit 8.67 cumecs B) Generators i) No. & Type of Generator 2 Nos., Synchronous Vertical Shaft ii) Rated output & Overload Capacity kw + 15% Overload iii) Rated Speed iv) Rated Generation Voltage 600 rpm 11 kv v) Average Annual Energy Gwhrs C) Power Evacuation i) Proposed Grid connection At Kotla sub-station ii) Length of Transmission Line iii) Type 18 km 220 kv double circuit line with Zebra conductor Thanks for your interest in our services. Please do reach us at Design Group Project Consultants (P) Ltd. 110/4, M. Krishnappa Layout, Lalbagh Road, Bangalore India. Phone: , , Fax: designgroup@vsnl.com 5 P a g e

Tender Call No.: Likhu/GVN/Pkg-03/2012 OLUME III A 1 TABLE OF CONTENTS SALIENT FEATURES 1.0 SCOPE SALIENT FEATURES... 1

Tender Call No.: Likhu/GVN/Pkg-03/2012 OLUME III A 1 TABLE OF CONTENTS SALIENT FEATURES 1.0 SCOPE SALIENT FEATURES... 1 Table of contents OLUME III A 1 TABLE OF CONTENTS SALIENT FEATURES 1.0 SCOPE... 1 1.1 SALIENT FEATURES... 1 1.2 TRANSPORT LIMITATIONS... 8 1.3 DEVIATIONS FROM SPECIFICATIONS... 9 1.4 APPROVAL OF DRAWINGS...