Project: Malana - II, Himachal Pradesh (Completed)

Location

State

Himachal Pradesh

District

Kullu

River

Malana Nallah, a tributary of Parbati River in the Beas Basin

Contract Duration

42 Months

Contract Value

INR 635.46 Crores (US$ 97.86 Millions)  (1 US$=INR 65)

Project Status

Commissioned-May,2012

Technical Features

Gross Head

623.6m

Net Head

608m

Design discharge

20 cumecs

Civil Works

Concrete Gravity Dam with Drift

150.5m long, 45m high

Spillways

2 no’s of Breast wall type, 4 x 5.5m

Head Race Tunnel

2.9m, D-shaped, 2.9m high,  4.98Km

Construction Adits

Total of 1.3km long in different dia.

Surge Shaft

6.0m diameter,  80m high

Vertical Pressure Shaft

2.5m diameter,  546m high

Horizontal Pressure Shaft

2.5m diameter, 183m long

Main Access Tunnel

6.0m x 6.0m,  382m long

Underground Power House

67.5m x 17.5m x 35.85m

Tail Race Tunnel

5.0m x 6.75m,  255.63m long

EOT Crane

Creation of rock ledge

Infra Works

Roads

13.08 Km

Permanent Colony

25000 sq. ft.

EM Works

Generator & Turbine

2 x 50 MW, Vertical axis pelton turbines.

Switchyard

Outdoor type, 60m(L) x 40m(W)

Substation

132 kV

Transmission Line

Double circuit, 18 Km

HM Works

Intake Trash Rack

7.0m x 2.03m, 2 Nos.

Intake Emergency Gate

3.0m x 3.0m, 1 No. Vertical Lift type.

Intake Service Gate

2.2m x 2.2m, 1 No. Vertical Lift type.

Spillway Radial Gate

4.0m x 5.5m, 2 Nos.

Tail Race Gates

2.5m x 1.8m, 2 Nos.

Tail Race Outfall Gate

5.0m x 3.0m, 1 No.

Silt Flushing Gates

2 no’s of 700mm Dia. valves.

Pressure Shaft Steel Lining

2.5m diameter,  800m long, 850MT

Surge Shaft Bonnet Gate

2.2m x 2.2m, 1 No.

Gantry Crane

1 No. 20 MT capacity

EOT Crane

130 MT / 25 MT in Power House

Loading Platform to Dam Site

30 ton & 1 ton capacity of 3.5km length

Loading Platform to Adit-3

6 ton capacity of 0.85km length

Loading Platform to Adit-4

6 ton & 0.5 ton capacity of 0.45km length

Adit-3 to Surge Shaft Top

0.5 ton capacity of 0.063km length