Lara Super Thermal Power Project Stage – I (3X800MW)

Make-up Water Pipes Package

I)BRIEF SCOPE OF WORKS

The scope of work includes design, engineering, manufacture/fabrication, application of external anti-corrosion coating of pipes (as applicable), testing (at shop and site), inspection, packaging, supply, transportation to LARA site, storage, transportation to work sites, laying, erection, all associated civil works (excluding civil works associated with canal/river/road/rail/highway crossings), testing, commissioning and Annual Maintenance Contract (as applicable) of make-up water pipes(3LPE coated Mild Steel Pipes/ Glass Fibre Reinforced Plastics Pipes/ Ductile Iron Pipes for Make-up Water Pipes Package) including supply of mandatory spares as per the specifications and scope defined in the bidding documents.

II)SALIENT TECHNICAL FEATURES ARE AS FOLLOWS:

Make-up water for the project is proposed to be drawn from submergence of Saradih Barrage on Mahanadi River located at a distance of about 37 km from the plant site. Make-up water pumps in the Make-up water pump house at Barrage end will pump the water to raw water reservoir located inside the plant boundary. Make-up water shall flow through two number cross country pipes (3LPE coated MS pipes/ GRP pipes/DI pipes) up to raw water reservoir located within the main plant boundary.

1)Three options for Make-up Water Pipes have been specified in Technical Specifications. Bidder has to choose one option as specified below. Scope of each option includes supply, erection and all associated civil works for Make-up water piping.

OPTION I:

a)Two (2) parallel Cross Country Make-up Water pipe (MS, SAW) of approx. 37000 Running Meter each of size 1016 mm OD, 10 mm thick (3LPE coated and bare MS pipes)

b)Sacrificial and Impressed Current Cathodic Protection system for buried pipelines.

c)Polyolefin tape coating for special sections, connections and fittings of buried pipelines.

d)Heat Shrink Wraparound Sleeves for field joints of buried pipelines.

OR

OPTION II:

a)Two (2) parallel Cross Country Make-up Water pipe of approx. 36000 Running Meter each of size 900 mm DN, Pressure class PN 12 and Stiffness class 248 KPa.

Page 1 of 2

b)Two (2) parallel Cross Country Make-up Water pipe of approx. 1000 Running Meter each of size

i)1016 mm OD, 10 mm thick (3LPE coated and bare MS pipes)

OR

ii)900 mm DN, K7 class DI pipes, Standard fittings & specials of K12 class

c)Required length of Polyethylene sleeves for buried pipelines (as applicable).

d)Sacrificial and Impressed Current Cathodic Protection system for buried pipelines (as applicable).

e)Polyolefin tape coating for special sections, connections and fittings of buried pipelines (as applicable).

f)Heat Shrink Wraparound Sleeves for field joints of buried pipelines (as applicable).

g)2 years Annual Maintenance Contract.

OR

OPTION III:

a)Two (2) parallel Cross Country Make-up Water pipe of approx. 37000 Running Meter of size 900 mm DN, K7 class DI pipes

b)Standard fittings & specials of K12 class

c)Required length of Polyethylene sleeves for buried pipelines.

d)2 years Annual Maintenance Contract

In addition to above, following shall also be provided:

2)Minimum Seventy (70) numbers of 200 NB Air release valves along with stubs, pipes and isolation valves along the complete Make-up Water pipeline.

3)Carrying out Hydraulic Transient Analysis studies.

Page 2 of 2