THANA PLAUN H.E.PROJECT (191 MW) DISTRICT MANDI, HIMACHAL PRADESH SALIENT FEATURES LOCATION State District River Location of Dam Himachal Pradesh Mandi Beas River Latitude: 31º49’28.22” (N) Longitude: 76º50’20.53” (E) Nearest Rail head Nearest Airport Narrow Gauge Rail Link at Jogindernagar and Broad Gauge Rail Link is at Pathankot Gaggal in district Kangra HYDROLOGY River Basin Catchment area at Dam Site Average Discharge at dam site Annual Runoff Standard Project Flood Probable Maximum Flood Average Annual Rainfall Beas 7378 sq.km 107.60 cumec 5416 MCM 10,530 cumecs 16,150 cumecs 1642 mm RESERVOIR Maximum water level (MWL) Full reservoir level (FRL) Minimum draw down level (MDDL) Gross storage at FRL Live storage Dead Storage + Sediment Storage + Inactive Storage 718.75 m 716.00 m 697.00 m 78.56 MCM 44.93 MCM 33.63 MCM •• • •Page•i• 00 m 65 m 8.Area under Submergence at FRL 316.23 m 221.00 m 612.2 m 300mm 635. Height of dam above Foundation Level River Bed Level Deepest Foundation Level Total length of dam at top Roller Compacted Concrete Dam (RCC) 719. D-shape 11.00 m high 651.00 m 106.0m high 639. Height (Downstream) Crest Elevation (Downstream) Length (Downstream) Colcrete (U/S) Rockfill (D/S) 16.70 m 634.640 cumecs (Routed Flood) •• • •Page•ii• .77 Ha.50m Inlet.00 m 42 m 1 No. Height (Upstream) Crest Elevation (Upstream) Length (Upstream) Max.50m Outlet 951 cumecs DIVERSION DAM Type Dam Top Max.25 m MAIN SPILLWAY (SLUICES) Design flood 15. 632. DIVERSION TUNNEL Shape Diameter Length Lining Thickness Invert Elevation Diversion discharge (1 in 25 Years) COFFER DAM Type Max.0 m 249. 0m (W) x 11.00 m 2 Intake 1. 3 openings.00m (W) x 4.Type Length of spillway Number of bays Crest level of spillway Spillway gates Bucket Invert Level and Radius Energy dissipation type Breast Wall Sluice Spillway 85.30 m(W) x 7.30 m(W) x 6.00 m 5 Nos.2 m (H) 650.0 m •• • •Page•iii• . Undersluices 670.503 cumec (Each considering 5% overload discharge) Invert level Number of Reservoir Intakes Intake gate size 684.30 m (H) Intake 2 .78cumec Intake-2 .5.160.7.17m (H).0 m 11 m (W) x 15.20 cumecs 713. Intake Structure Height 35.00 m Stilling Basin Cistern Level 653. 3 openings Intake -2 .5.52m (H).0 m with 35 m Radius Ski Jump Bucket AUXILLIARY SPILLWAY No.6.70m (H) 37.0m (W) x 13.30 m (H) Trash rack in each intake Intake -1 . of bays Width of bay Size of gate Design flood Crest level of spillway Energy dissipation type Features 1 4m 4.50m and 44m Length INTAKE Type Shape Maximum Design Discharge Reservoir Intake Bell mouth Intake-1 – 143. 7m. 4. which further bifurcates into two branch penstocks of 4.30 m HRT-2 .152.0 m (W) x 41.7 m dia.0 m and 4.116.25 m and 2.0m (L) x 21.65 m and 5.136.0 m (H) 629.HEAD RACE TUNNEL Shape Diameter Length Design discharge Horse Shoe HRT-1 .0 m (W) x 28.7. Pressure Shaft-2: 6.25 m and 5.93 cumecs HRT-2 .00) 145.50 m Vertical Francis •• • •Page•iv• .6.33+2 x20.L.00 m dia. bifurcating into two branch penstocks of 4.65m Pressure Shaft-2: 6.86 cumecs PENSTOCK/PRESSURE SHAFT Type Number Underground Pressure Shaft-1: 5.0 m dia. each Diameter Length upto Bifurcation of main pressure shafts Grade of Steel Liner Thickness Pressure Shaft-1: 5. bifurcating into 2. of turbine Type of Turbine Underground 191 MW 5 (3 x 50.4 m HRT-1 .25 m Dia.0m (L) x 19.65 m Dia.3 m HRT-2 .146.30 m HRT-1 .25 m Pressure Shaft-1 :92m Pressure Shaft-2: 127 m ASTM-537 Class II Pressure Shaft-1: Varies from 16mm to 32 mm Pressure Shaft-2: Varies from 26mm to 34 mm POWER HOUSE Type Installed Capacity Units Power house cavern size Transformer Hall cavern size C.00m and 2.50 m (H) 127. 16 GWh 41.97 m 73.53 GWh 146. During Non-Peaking hours Minimum TWL Annual Design dependable year) a) Main units b) Environmental Units Annual Energy in 50% dependable year on 95% machine availability a) Main units b) Environmental Units Annual Design dependable year) a) Main units b) Environmental Units Annual energy in 90% dependable year on 95% machine availability a) Main units b) Environmental Units Annual Plant Load Factor in 90% Dependable year a) Main Units b) 229.70 m 631.00 m 632.91 GWh 143.13% 42.70 m 633.50 m Energy (50% 547.58 GWh 151.30 m 631.35 GWh (90% 544.54 GWh Energy 524.51 GWh 534.07 GWh 148.39% Environmental Units •• • •Page•v• .17 m 634.29 cumecs 60.50 cumecs 72. During Peaking hours ii.Design Discharge a) Main units b) Environmental Units Rated Head a) Main units b) Environmental Units Normal TWL a) Monsoon b) Lean c) Non-Monsoon i. 37 m TRT-8 .85 •• • •Page•vi• .06 2007. During Peaking hours iv.46 Hydro975.80 m dia.30 m 631.70 m 634.40 m COST ESTIMATES & FINANCIAL ASPECT (Rs.40 1272.00 m 632.70 m Pressure Flow Tunnels TRT-7 .50 m dia.7.80 16. Crores) Civil Works including Mechanical Works Electro Mechanical Works Total Basic Cost including Direct & Indirect Charges Interest during construction (excluding financing cost) Escalation Financing Charges Total Cost including Escalation and IDC 417.40% 43. D shape TRT-8 .8.Annual Plant Load Factor in 50% Dependable year a) Main Units b) 41. During Non-Peaking hours 633.45 297. D shape TRT-7 .66 281.24% Environmental Units TAIL RACE ARRANGEMENT Type Size & Shape Lengths Normal TWL at outlet a) Monsoon b) Lean c) Non-Monsoon iii. /KWhr) After considering 12% free power & 1% for local area development (levelised) LEVELLISED TARIFF AT 50% DEP.70 6. (in Rs.5 Years •• • •Page•vii• .58 Period of Construction (excluding 18 months preconstruction activities) 4.LEVELLISED TARIFF AT 90% DEP. YRS. YRS./KWhr) After considering 12% free power & 1% for local area development (levelised) 6. (in Rs.