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ENTRY OF NTPC IN HYDRO-POWER SECTOR

Government of India formulated hydro policy in 1998which encourages more public & private participation

POWER SECTOR

which encourages more public & private participation.

NTPC, the leading thermal power giant of Asia hasresponded to the need of nation.p

NTPC entered in the field of hydro power in 1998.

The agreement of Koldam hydro electric power projecte ag ee e o o da yd o e ec c po e p ojecwith H.P. Govt. Was made in Feb.2000.

Subsequently Implementation agreement has beenSubsequently Implementation agreement has beensigned for

-Loharinag Pala HPP (600MW)2

-Loharinag Pala HPP (600MW)-Tapovan Vishnugad HPP (520 MW)-Rupsiabagar Khasiyabara HPP (261 MW)

ENTRY OF NTPC IN HYDRO-POWER SECTORPOWER SECTOR

A wholly owned subsidiary company, NTPCHydro Ltd (NHL) was formed for developingHydro Ltd (NHL) was formed for developingprojects having capacity upto 250 MW.

PROJECTS TAKEN UP BY NHL :

o LATA TAPOVAN UTTARAKHAND 171 MWo RAMMAM STAGE-III WEST BENGAL 120 MW

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CURRENT HYDRO PROJECTSUNDER IMPLEMENTATION :

KOL DAM HIMACHAL PRADESH 800 MWTAPOVAN VISHNUGAD UTTARAKHAND 520 MWTAPOVAN VISHNUGAD UTTARAKHAND 520 MWLOHARI NAG PALA UTTARAKHAND 600 MWLATA TAPOVAN (NHL) UTTARAKHAND 171 MWRAMMAM Stage-III (NHL) WEST BENGAL 120 MW

Total 2211MWUNDER INVESTIGATION :

RUPSIBAGAR-KHASIYABARA UTTARAKHAND 261 MWRUPSIBAGAR KHASIYABARA UTTARAKHAND 261 MWTotal 261 MW

MoU SIGNED FOR DPR:

ETALIN ARUNACHAL 4000 MWATTUNLI ARUNACHAL 500 MW

Total 4500 MW

4GRAND TOTAL 8742MW

NTPC PLANS TO SETUP 9000MW BY 2017.

STRENGTH OF NTPC

P M t bilit t i l t j t

STRENGTH OF NTPC

Proven Management capability to implement projects ahead of scheduleEffective Project Cost Control systemj yNo constraints in arranging of Funds due to Financial soundnessDetailed and thorough Geological investigations toDetailed and thorough Geological investigations to minimize Geological risksBest practices of Quality, Safety, Environment & R&RP ti f d t ti t h iPromotion of modern construction techniques.Has a strong team of Engineering, Contracts, Construction, Erection, Commissioning, O&M.

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g

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Detailed investigation for DPR

Detailed investigations are carried out for DPR hi h i l d• Geological mapping

D illi

DPR which includes :

• Drilling• Drift• Geophysical studyGeophysical study• Geotechnical Investigation

-In Situ tests-Laboratory tests

• Geothermal investigation

7This will minimize Geological surprises.

Engineeringg g

• In house Engineering capability forti f DPR & d t il d d ipreparation of DPR & detailed design

• Latest design software are used for analysis& design& design.

• At construction stage, quick modifications tosuit site conditions.

• NTPC explores latest modern techniques,suitable for construction and adopts thesame.

• To avoid any delay construction drawing issubmitted one month in advance to

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submitted one month in advance tocontractor.

Objective SpecificationsObjective Specifications

• FIDIC specifications are followed for civilFIDIC specifications are followed for civil works.

• For different geology encountered during• For different geology encountered during construction stage specifications have provision for resolution of variations andprovision for resolution of variations and extra item.T id d l l d f i f t t• To avoid delay land for infrastructurefacility for contractor are identified.

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Award of contracts

Following steps are taken for selection ofFollowing steps are taken for selection of proper contractors / vendors:

• Formulation of proper QRs• Pre bid conferences• Pre-bid conferences• Post bid discussions

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Monitoringg

• Corporate Monitoring group monitorsprogress of work using latest software likePRIMAVERAPRIMAVERA.

• Alternate contingency measures to make updelaysdelays.

• Monthly review meetings..

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InfrastructureInfrastructure• Telecommunication and other amenities are

i t ll d b f d f i kinstalled before award of main package.• Main approach roads, bridges etc suitable for

transporting heavy construction material &transporting heavy construction material &equipments is developed by NTPC during initialstages.

• To meet peak construction demandarrangements for construction power are donebefore award of main packagebefore award of main package

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Environmental MeasuresEnvironmental Measures

• Project specific R&R scheme are implementedj p pin consultation with state government & projectaffected persons (PAPs).All l i E i• All statutory clearances viz., Environment,Forest etc. are obtained prior to award of mainworksworks.

• Disaster management plan are developed foreventualities like land slide, flash floods etc. inadvance and regular mock drill is carried out.

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Power H

Koldam Project LayoutKoldam Project Layout

HousePenstocks Inlet

Diversion Tunnels

16PROJECT

VIEW POINT

Switchyard

Project Components –A model view of Koldam HEPA model view of Koldam HEP

DecantingDam

PowerU/S

S ill

Power IntakePower House

Spillway

Diversion Tunnel Outlet

Plunge Pool

17River Satluj

D/S

SALIENT FEATURESDIVERSION TUNNELS

NUMBER/LENGTH : 2 No. ( 901 m & 933 m)FINISHED DIAMETER : 14 m (Horse shoe shaped)

DAMTYPE : ROCK & GRAVEL FILL WITH

CLAY COREHEIGHT : 163 m

PENSTOCKSNUMBER / TYPE : 04 nos.NUMBER / TYPE : 04 nos. SIZE : 6.45 m DIA

POWER HOUSETYPE OF POWER HOUSE SURFACETYPE OF POWER HOUSE : SURFACE TYPE OF TURBINE : 04 NOS. FRANCIS

SWITCH YARD

18TYPE OF SW YARD : SURFACE / CONVENTIONALTRANSMISSION : 400 kV

19An aerial view of Dam under construction

Main Dam

TYPE : ROCK & GRAVELFILL

WITH CLAY CORE

HEIGHT : 163 Mtrs.

CREST WIDTH : 14 Mtrs.

MAX. RES. LEVEL : EL 646 Mtrs

FULL RES. LEVEL : EL 642 Mtrs.CREST LEVEL : EL 648 Mtrs.

CREST LENGTH : 500 Mtrs. MIN. D/DOWN LEVEL: EL 636 Mtrs.

El. 648 M

El. 500 M

El. 558 M

Up stream Coffer Dam

D/s Coffer Dam

M A I N D A M

El. 500 M p

CLAY QUARTZITE GRAVEL ROCK FILL RIP RAP

All quantities in Lac M3

2020.62 7.89 32.61 59.02 1.84

DIVERSION TUNNELDIVERSION TUNNEL

River Satluj Gurgling in

INLETINLET OUTLETOUTLETRiver Satluj streaming

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River Satluj Gurgling in to the Asia’s biggest dia. Twin Diversion

Tunnels

River Satluj streaming out from Twin Diversion Tunnels “Luv & Kush”

Asia’s Largest Twin diameter Diversion Tunnel constructed in record time

Power House- under i ( / )construction(u/c)

K ld22

Koldam

Decanting Chamber u/c

K ld23

Koldam

Spillway u/c

Koldam

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Koldam

TownshipTownship

K ld25

Koldam

MAJOR ACHIEVEMENTS

•EXCAVATION 10,33,000 Cu.m IN A MONTH

•DAM FILLING 16m IN 2 MONTHS (5 Lac Cu.m)

•ERECTION ERECTED TWO DT-GATES EACH OF 350 MT IN 21

DAYS

GALLERY 181 LINEAL METER ON ONE•GALLERY 181 LINEAL METER ON ONE FACE IN A MONTH (3.5m

DIA)

•CONCRETING 1700 Cu.m. IN A DAY

•TUNNEL 206 m ON SINGLE FACE IN A

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TUNNEL 206 m ON SINGLE FACE IN A MONTH (14 m DIA)

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Gangotri Shrine

28Loharinag Pala Hydro Power Project Layout

LOHARINAG-PALA (600MW)Salient Features

River : BhagirathiType : RoR ypBarrage : 67.5 m long. HRT : 13 85 km long 6 m diaHRT : 13.85 km long , 6 m dia.Surge shaft : 192 m high, 13 m dia.Penstock : 4 nos 2 84 m diaPenstock : 4 nos ,2.84 m dia.Power house : Underground ,125 m X 22 mTRT 510 L 6 diTRT : 510 m Long,6 m dia.Gen. Eqpt. : Pelton

29Gross head : 481.67mDischarge : 152.6 Cumecs

Adit to Gate operating chamber under construction (u/c)under construction (u/c)

LNP HEP30

LNP HEP

Adit to HRT u/c

LNP HEP31

LNP HEP

Adit to Desilting Chamber

LNP HEP32

LNP HEP

Diversion channel u/cDiversion channel u/c

LNP HEP33

LNP HEP

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Badrinath Shrine

35Tapovan Hydro Power Project Layout

TAPOVAN –VISHNUGAD (520 MW) SALIENT FEATURES

River : DhauligangaType : RoRypBarrage : 70 m long HRT : 11 64 km long 5 4 m diaHRT : 11.64 km long, 5.4 m dia.Surge shaft : 13.5 m dia.Penstock : 3 6/2 6 m diaPenstock : 3.6/2.6 m dia.Power house : UndergroundTRT 513 l 5 4 H hTRT : 513 m long 5.4 m HorseshoeGen .Eqpt. : Pelton

36Design head : 525.67 mDischarge : 119.2 Cumecs

TV HEP -Desilting Basin u/cTV HEP Desilting Basin u/c

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TV HEP-Work in Progress at Barrage siteBarrage site

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RUPSIBAGAR-KHASIABARA (261MW)

(UTTARAKHAND)

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RUPSIBAGAR-KHASIABARA (261MW)SALIENT FEATURESSALIENT FEATURES

River : GorigangaType : RoR Dam, 62 m highyp , gIntake : 2 nos. HRT : 7 580 km long 4 75 m diaHRT : 7.580 km long , 4.75 m dia.Surge shaft : 118.725 m high, 12.5 m dia.P t k 1 4 1 diPenstock : 1 no., 4.1 m dia.Power house : SurfaceTRT : 70 m lengthGen. Eqpt. : Pelton

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qpDischarge : 41.478 Cumecs

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Tangon DibangRiver

Dibang River

ETALIN HEP (4000MW)-INDIA’S SINGLE LARGEST

42HYDROPOWER PROJECT

An aerial view of Etalin & Attunli HEP- Site location

500MW

DIBANGTANGON

RIVERRIVER

4000 MW

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ETALIN – 1500 MW on river TangonSALIENT FEATURES

RIVER Tangon

DIVERSION TUNNELSNUMBER/LENGTH : 1 No / 600 MNUMBER/LENGTH : 1 No. / 600 MFINISHED DIAMETER : 12 m (Horse shoe shaped)DESIGN CAPACITY : 1600 Cumecs

DAMTYPE : CONCRETEHEIGHT : 155 m

HEAD RACE TUNNELNUMBER / TYPE : 2 nos. HORSE SHOESIZE : 8 0 m DIASIZE : 8.0 m DIALENGTH : 12 & 12.5 KM

SURGE SHAFT2 NO., 15m DIA, 125m HIGH

PRESSURE SHAFT2 NO., 6.7mDIA, 361m DROP

POWER HOUSE

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POWER HOUSETYPE OF POWER HOUSE : UNDERGROUNDTYPE OF TURBINE : 06 NOS. FRANCIS (VERTICAL ) 250MW EACH

ETALIN – 2500 MW on river DibangSALIENT FEATURES

RIVER Dibang

DIVERSION TUNNELSNUMBER/LENGTH : 2 No / 650 & 750 mNUMBER/LENGTH : 2 No. / 650 & 750 mFINISHED DIAMETER : 10.5m (Horse shoe shaped)DESIGN CAPACITY : 2300 Cumecs

DAMTYPE : CONCRETEHEIGHT : 90 m

HEAD RACE TUNNELNUMBER / TYPE : 2 nos. HORSE SHOESIZE : 10 5 m DIASIZE : 10.5 m DIALENGTH : 9.7 & 9.9 KM

SURGE SHAFT2 NO., 23m DIA, 125m HIGH

PRESSURE SHAFT4 NO., 5.5/6.7m DIA, 379m DROP

POWER HOUSE

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POWER HOUSETYPE OF POWER HOUSE : UNDERGROUNDTYPE OF TURBINE : 10 NOS. FRANCIS (VERTICAL ) 250MW EACH

ATTUNLI HYDRO POWER PROJECTSALIENT FEATURES

RIVER : Tangon

DIVERSION TUNNELSNUMBER/LENGTH : 1 No / 700 mNUMBER/LENGTH : 1 No. / 700 mFINISHED DIAMETER : 11.5m (Horse shoe shaped)DESIGN CAPACITY : 1500 Cumecs

DAMTYPE : CONCRETEHEIGHT : 105 m

HEAD RACE TUNNELNUMBER / TYPE : 01 no.HORSE SHOESIZE : 8.0 m DIALENGTH : 7 50 KMLENGTH : 7.50 KM

SURGE SHAFT1 NO., 16m DIA, 105m HIGH

PRESSURE SHAFTPRESSURE SHAFT1 NO., 6.6m DIA, 237m DROP

POWER HOUSETYPE OF POWER HOUSE : UNDERGROUND

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TYPE OF POWER HOUSE : UNDERGROUNDTYPE OF TURBINE : 04 NOS. FRANCIS (VERTICAL ) 125MW EACH

U/S OF ATTUNLI POWERHOUSE

47D/S OF ATTUNLI DAM

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