power scenario in j&kjkspdc.nic.in/tender_files/2012/cdm/project idea notes section iii.pdf ·...

Project Idea notes Section- III

J & K State Power Development Corporation (JKSPDC)

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POWER SCENARIO IN J&K

The J & K State is endowed with huge and vast water resources in the form of

permanent glaciers & ice bodies, inland water bodies viz. lakes & river systems.

These are being utilized for water resource development projects. To tap water

resources for hydropower development, the capacity that can be developed

on the major river systems and its tributaries has been estimated as about 20,000

MW. The hydropower scenario has been examined based on latest information

of projects implemented, proposed and under construction in the state. Based

on these studies it is established that:

i. Most of the State’s Hydro power Projects are run-off the river type;

ii. The present installed generating capacity in the State is only 2457.96 MW

(just about 12%) against the Hydropower potential of 20,000 MW in the

state;

iii. The power shortage is less in summer months and far greater in winter

months when river discharges dwindle down to the barest minimum. The

position becomes alarming in Kashmir Valley during winter, when the entire

mountainous region is snow bound and in the grip of extreme cold with

higher energy requirement;

iv. The state Government has installed Gas Turbines in the valley to generate

175 MW of Power and thus provide some immediate relief to the people;

v. In order to make the state self-sufficient in power sector and to harness the

western rivers of Indus Basin without disturbing the Indus Waters Treaty, the

J&K Govt. has approved the IPP Policy to develop power potential in the

State wherein investors, both national and international, have been asked

to come forward and invest.

J & K State has accorded top priority to harness the huge hydro power potential

and has prioritized following nine projects for immediate execution :-

S. No. H.E. Projects at various stages of clearance Capacity in MW

1 Sawalkote HEP 1856

2 Kirthai Stage-II 990

3 Baglihar Stage-II 450

4 Kirthai Stage-I 390



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JKSPDC had vide letter dated 08.08.2012 had submitted the applications as per

the prescribed form to the CDM Executive Board for prior consideration of these

projects. Applications were also submitted to the National Designated Authority.

CDM team of UNFCCC secretariat has published the included these projects in

the list of the projects for Prior Consideration of the CDM

at: https://cdm.unfccc.int/Projects/PriorCDM/notifications/index_html on 9th of

August 2012.

1. 1856 MW Sawalkote HEP in J & K

1.1 Introduction

The Sawalkote Hydro-electric project with an envisaged installed capacity 1856

MW (800 MW for main generating units +56 dam toe for eco flow) is proposed

on the left bank of River Chenab in Districts of Ramban and Udhampur of

Jammu & Kashmir State in India.

1.2 Project Location

The project is located 40Km from District Head Quarter of Ramban . The dam

and Power House are located at longitude 750-06ʹ E and Latitude 330 – 11ʹ N.

The project will utilize the potential between the existing downstream 690 MW

Salal HEP and the upstream 900 MW Baglihar HE Project (Stage I of 450 MW of

Baglihar HEP has been commissioned in 2009 and the Stage II also of 450 MW is

being constructed). The Chenab River crosses the border to Pakistan 80 Kms

downstream from the proposed Dam site.

1.3 General information

The Sawalkot HEP will be essentially a run-off-river plant. Total catchment area of

the project upstream of the dam is 19480 Sqkms. It envisages construction of a

roller compacted concrete dam with maximum height of 192 m from the

deepest river foundation level. It shall have free over-flow gated spillway chute..

5 New Ganderbal HEP 93.0

6 Lower Kalnai 48.0

7 Parnai 37.5

8 Dah 9.0

9 Hanu 9.0

https://cdm.unfccc.int/Projects/PriorCDM/notifications/index_html



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The reservoir thus created shall have submergence area of 11.50 Sqkm which

includes 2.50 Sqkm of river area. The capacity of the reservoir shall be 530 million

M3 at Full Reservoir Level (FRL), 550 million M3 at Max. water level and 497.44

million M3 at Minimum Draw Down Level (MDDL). The operational volume shall

be of the order of 32.56 million M3. The maximum regulated water level will be

697 m amsl.

During construction of the river works, the river flow shall be diverted through two

No. diversion tunnels of 1080M and 690M lengths each having cross sectional

area of 234 M2. The tunnels shall be sufficient to divert a 25 years flood of 8900

M3 /Sec. The design discharge for generating 1856MW is 1293 Cumecs at a net

head of 154.40m.

The project envisages construction of three to four head race tunnels 200 to 210

m in length and underground power house and transformer hall and tail race

tunnels.

Indus Waters Treaty 1960 shall strictly govern the development of the Project.

Due to the project activities, about 629 houses in the river stretch of 40Km shall

be affected.

The design energy of the project in a 90% dependable year shall be 8015 GWh.

The construction period of the project shall be 7½ years besides one year

preconstruction activities.

1.4 Present status

Earlier DPR with an installed capacity of 1200MW was submitted to CEA for

techno economic clearance. CEA advised to enhance the installed capacity to

1856MW to ensure optimum hydrological utilization. CEA has cleared the

updated hydrology, flood studies and power potential of the project. Dam

design is under appraisal of CEA. Full version of the revised DPR for installed

capacity of 1856MW shall be submitted to CEA by March 2013. Techno-

economic Clearance (TEC) of Central Electricity Authority (CEA) is expected to

become available by June 2013. Project execution is expected to start by Nov.

2013 with commencement of the preconstruction/infrastructure activities.

Identification of the land requirement and the detailed survey of the project

affected people is under progress.



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MoEF on 13-10-2011 has approved the ToR for carrying out the EIA studies. M/s RS

Envirolink Technologies Pvt. Limited, accredited by the Quality council of India-

National Accreditation Board of Education & Training (QCI-NABET), has been

engaged for carrying out the studies. First season report has already been

submitted by the Consultant. The studies are under progress and are targeted to

be completed in a time bound manner so as to get the clearance from MOEF

by the end of 2012.

2. 990 MW Kirthai HEP Stage II

2.1 General

Kirthai H.E. Project stage II , a run-of-the river project on river Chenab, has been

conceived as 121 m high concrete dam with a total potential of 990MW. The

main Power house shall be underground and a small dam toe power house shall

be constructed for eco-flow.

2.2 Location

The Project is proposed to be located at Kidur 16 km downstream of Gulabgarh

in Kishtwar District of J&K. At the project Site, the river flows in a very deep gorge

having mean elevation of 1650 m. The river is about 85 m wide and both the

abutments are steep sloping. Rocks are exposed on both the banks.

The coordinates of the Main Dam are:- Longitude :760 -04' - 37" E; Latitude: 330 -

18' - 41" N

The Project site of Kirthai H.E. Project Stage II is approachable through Kishtwar,

Galhar Sansari Road. Nearest town Kishtwar is located at about 80 km from

project site and connected to Jammu by National Highway 1A & 1B. Nearest

Rail head is Udhampur Railway Station and nearest Airport is Jammu.


Catchment area of the river upto the dam site is 9987 Sq.Km having Average

Annual Yield of 9337.33 M cum. Minimum Mean Discharge is 53.9 Cumecs. The

design flood shall be 7440 cum.

The project envisages construction of a 165m high (Height above the deepest

foundation level) concrete gravity dam having dam top length of 219.80 m.

Spillway having width of 85m has been designed to discharge flood of 7440

cum. To facilitate construction of the Dam, a 10.5m diameter and 633.20 m long

diversion tunnel shall be provided.

Full Reservoir Level shall be1764.00 m, with a reservoir area of 1.473 Sq. Km and

gross Capacity of 51.26 MCM. Minimum Draw Down Level shall be 1750.75m



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with reservoir area1.028 sq.km with capacity of 34.26 Mcm. Maximum live

storage shall be17 Mcm.

The project envisages construction of one no. Head Race Tunnel 4.289 Km in

length and diameter 11.25 m to carry a design discharge of 485 cumecs.

3 No. pressure shaft each of 5.60 m dia. shall be provided. Each pressure shaft

shall be bifurcated into 3.75m dia. steel lined penstocks to feed two units .

There will be an underground Power House complex having machine hall

Cavern 187 X 22m X 50.70 in size to accommodate 6 vertical shafts Francis type

turbine driven generating units. Size of the Transformer Cavern shall be 191m X

18m X 27m.

The Tail Race Tunnel shall be of Pressure Flow type having length of 352.50 m

with dia. of 11.25 m

This scheme is governed by the provisions of Indus Waters Treaty.

MoEF has approved the ToR for conducting the EIA studies of the project. The

Studies are currently underway.

A construction period of seven years has been considered for completion of the

project. The basic infra-structural development, pre-construction surveys and

investigations, preparation of design/specifications and tender documents shall

be completed within the first year. The work on other infra-structural facilities like

colonies, roads, workshops etc. will also start in the first year. The construction of

all civil structures shall be completed in six years.

The project shall generate 3796.26GWH of energy in a 90% dependable year.

2.4 Present Status

The DPR of project was prepared by CWC in March 2010. It was submitted to

Central Electricity Authority (CEA) by JKSPDC in April, 2011 for accord of Techno

Economic Clearance (TEC). Hydrology as well as the Power Potential studies

(estimated at 990 MW) stand approved by CEA/CWC. Even the observations of

the GSI have also been replied.

The appraisal process in underway and TEC is expected to become available

by Dec. 2012. Requisite clearances are under process.

The project is being implemented by Jammu & Kashmir State Power

Corporation, JKSPDC, through EPC mode. Two stage bidding process shall be



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adopted to award the project. RfQ shall be floated in the month of October

2012. The project is targeted sto be awarded by July 2012.

3. 450 MW Baglihar HEP Stage II

3.1 General

The Baglihar Hydro-Electric Project – Stage-I and Stage-II, each of 450MW

installed capacity were envisaged as run-of-the river schemes, governed by the

Indus Waters Treaty to exploit the hydro power potential of River Chenab at

village Baglihar, near Ramban. Baglihar Hydro-Electric Project – Stage-I works

comprise of 143.0 m high concrete dam on Chenab river, near Baglihar village,

Intake works for both Stage-I and Stage-II project located on right bank of river,

Head Race Tunnels of about 2081m long for Stage-I and 50m long for Stage-II,

27.5 m dia. Surge Shaft, Three Steel Lined Pressure Shafts, an Underground Power

House (3x150 MW), D/S Surge Chamber and 130 m long Tail Race Tunnel with its

outlet works. The works of Baglihar Hydro-Electric Project Stage-I have been

completed and its Power House is under commercial operation since April 2009.

While designing the structures of Stage-I works, the requirements of proposed

Stage-II works were also kept in view. Accordingly the underground works for

Stage-I were so located that Stage-II works can also be accommodated on the

hill side on the right bank of river Chenab.

The reservoir levels, pond levels, inlet levels etc. were also fixed keeping in view

the peaking capacity requirement for both Stage-I and Stage-II Power Stations.

3.2 Location

The projects are located in the Ramban Tehsil of Distt. Ramban of Jammu

Province of Jammu & Kashmir state. (Longitude: 7518'10" - 7520' East; Latitude:

339'30" - 3311' North). The project is about 140Km from Jammu near the Jammu

– Srinagar National Highway (NH1A).


BHEP stage-II Power House cavern is 180m u/s of stage-I Power House Caverns.

The Power Intake for Stage-II project has been constructed along with the intake

of Stage-I, as it would not have been practical to construct the same at later

stage without stopping the Stage-I Power house. The inlet to the intake consists

of two rectangular openings 10m x 7.5 m with a 5m thick intermediate pier.



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The project comprises construction of about 1888.8m (including the length of

already constructed part of HRT-II with stage-I works) long Head Race Tunnel of

10.15m finished diameter designed to carry 430 Cumecs of water.

A restricted orifice type Surge Shaft of 27.5m diameter has been proposed at

the d/s end of HRT with the top of surge shaft at EL.867.0 m and bottom of Surge

Shaft is proposed at EL. 812.0m.

Three nos. individual steel lined Pressure Shafts (inner dia 5.5m) for each machine

are taking off from the surge shaft.

It is proposed to provide gates for each pressure shaft at junction of Surge Shaft

and pressure shafts.

Machine Hall Cavern will be of size 121 m (L) x 24 m (W) x 51.8 m (H) and would

have 3 Nos. generating units.

113.15 m (L) x 15 m (W) x 24.5 m (H) Transformer Hall Cavern will run parallel to

power house machine hall cavern and will be located 30 m away from the

downstream wall of Machine Hall. The transformer hall cavern will have two

floors. The bottom floor at El. 708.3 m will house the 10 single-phase power

transformers (33 and one spare), and upper floor at El. 719.3 m will house 400 kV

G.I.S. equipment.

A Collection Gallery has been provided on the downstream of the power house

to help stabilize the pressure level caused by load fluctuations. This gallery also

acts as collection chamber for the discharge from draft tube tunnels. The gallery

is 95 m long, 14 m wide and 19.15 m high. The water level of Chenab river at

outfall of Stage-II has been taken at EL 717.20m corresponding to flood

discharge of 8500 cumec.

3 Nos. Vertical Shafts (one for each draft tube) of size 12 m (L) x 14 m (W) rise

from overt of Collection Gallery upto El. 736 (i.e. invert of top gallery). The top of

vertical shafts have been kept above the max. surge level in D/S surge

chamber.

A 342.60 m long Tail Race Tunnel will carry the turbine discharge to the river

Chenab. The tail race tunnel will have the same cross-section as the head race

tunnel (10.15m dia circular) and will rise from El 688.0 m at the collection

chamber to El 700.0 m at the outlet structure at a constant slope of 1 in 28.55.

The Outlet Structure of the Tail Race Tunnel has been proposed in the shape of a

diffuser with two bays of 5.0 m width x 8.1 m height each.

The project shall generate 1302MUs of energy in a 90% dependable year.



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3.4 Present Status

Contracts for the project have been awarded in March 2012. Civil and hydro

mechanical works shall be executed by M/s Jai Prakash Associates Limited and

the Electro mechanical works by M/s Voith Hydro- Andritz Hydro Germany/India.

All the three units of the project are targeted to be commissioned by August

2015.

4. 390MW Kirthai HEP Stage I

4.1 Introduction

The project is a run-of-the river scheme envisaging construction of a 165m high

concrete dam above the deepest foundation level to be located on river

Chenab with underground power house just downstream of dam axis on left

bank and diversion tunnel on right bank.

4.2 Location

The dam and power house site is located in village Gulabgarh in Paddar Tehsil

of Kishtwar District of Jammu and Kashmir, about 315 km away from Jammu

which is approachable through NH-1A National Highway upto Batote and

beyond Batote upto Kishtwar there exist an all weather road . The Coordinates

of the Main Dam are Longitude: 760-10’-10”E; Latitude: 330-15’-33”N


The drainage area of Chenab River up to dam site of Kirthai –I H E Project is 8530

Sq km, out of which 4608 Sq km is snow fed and rest 3922 Sq km is rain fed.

Total length of dam at top (at El 1900) is 250.50 m. Standard Ogee Type spillway

and shaft spillway will be provided to pass design flood of 7400 cumecs. For

diverting the flow during construction period a 10.5 m dia diversion tunnel has

been provided on right bank with designed carrying capacity of 1200 cumecs.

An underground power house with four units of Francis Turbines has been

envisaged with total installed capacity of 380 MW under designed head of

108.53 m. A surface power house on right bank with one unit of Francis turbine

has been envisaged with 10 MW installed capacity for eco-flow of 9.5 cumecs

Energy generation in a 90% dependable year shall be 1460.87 MUs.



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Intake tunnel shall be 10.5 m diameter, 130.2 m long. The tunnel will end in 10.5

m diameter vertical pressure shaft. Pressure shaft will converge in to manifold in

to four penstocks near the power house to feed the units. Design Discharge

shall be 385.50 Cumecs.

The underground power house complex comprises of machine hall cavern

(116.4m x 20m x 45.54m), the transformer cavern (102m x 14m x 23.30m). There

shall be one Concrete Lined tail race tunnel of diameter 10.50 m and 117.53 m

length. In addition, there shall be access tunnels to power house and

transformer cavern and construction adit to top of power house, top of

transformer cavern and bottom of vertical pressure shaft

Gross Capacity of the reservoir at the FRL of 1895 m shall be 104.78 M Cum with

a Reservoir Area of 199.50 Hactare. Gross Capacity at the Minimum Draw

Down Level of 1887.58 m shall be 90.79 M Cum. Maximum available live storage

shall be 13 M- Cum.

The project is planned with pondage for peaking operation, as per the

provisions of the Indus Waters Treary.

Completion time for all construction activities for the project as a whole i.e.

commissioning of all the units is 60 months.

4.4 Present status

JKSPDC has floated the Request for Qualification on 20.9.2012 for

implementation of the project on “Engineering, Procurement and Construction”

(EPC) basis. The project is targeted to be awarded by June 2013. JKSPDC has

conducted the EIA studies of the project as per the ToR approved by MoEF.

EIA/EMP studies report has been submitted to MOEF for accord of the

clearance.

5. New Ganderbal Hydro Electric Project (93 MW)

5.1 General

93MW New Ganderbal Hydro Electric Project (NGHEP) is envisaged as a run-of-

the river multipurpose scheme, between Preng and Ganderbal along left bank

of the Nallah Sindh, a tributary of River Jhelum in Jammu & Kashmir India.

Besides power generation, the project envisages to provide drinking water

facilities to Srinagar city and irrigation to the local command area.



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5.2 Location

The Project area is located in the Ganderbal district of Jammu and Kashmir

State with headworks at Preng having latitude of 340 16’ 21.29” N and longitude

of 740 52’ 27.23” E. The headworks can be approached by National Highway 1-

D (Srinagar-Leh National Highway – NH 1D) and is at a distance of 40 Km from

Srinagar. The powerhouse site is also to be approached through NH-1D and is

about 20 km from Srinagar.


The Nallah Sindh drains off catchment area of 1352 sq. km at the proposed

barrage site. The design flood (1 in 100 year) and SPF have been assessed as

1800 cumecs and 2600 Cumecs respectively. The diversion flood is 225 cumecs.

An installation of 93 MW comprising 3 generating units of 31 MW each has been

assessed. The Design energy of the project in 90% dependable year is 382.48

GWh.

The project envisages construction of a barrage of 72.03 m length and 11 m

height across the Nallah Sindh at Preng village. The barrage has 7 Nos. spillway

bays (including 1 undersluice) with gates mechanically operated. Each spillway

bay is 8 m wide totalling a waterway of 56 m.

River diversion works are proposed to be undertaken through a diversion

channel, located on the left bank of Nallah. The channel shall be capable of

carrying a diversion flood of 225 cumecs with upstream and downstream

cofferdams.

Water Conductor System envisages construction of one no. 5.5 m diameter and

10990 m long horse shoe shaped concrete lined head race tunnel to carry a

discharge of 78.38 cumecs (72.38 cumec for power generation and 6 cumecs

for drinking water supply). An adit-cum water Supply tunnel (6m dia D shaped)

having length of 739 m shall be provided to deliver the drinking water to the

treatment plant at Rangil.

A twin chamber hopper type desilting basin of size 34 m (W) X 70 m (L) X 7 m (H)

each has been proposed on the left abutment of barrage upstream of barrage

axis. The power intake is located in the collection chamber of basin. The intake

structure is proposed at the end of the collection chamber provided at the

termination of the Desilting basin. The gated Power Intake is designed for

discharge of 78.38 m³/s.



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One number underground surge shaft of 20 m diameter and 58 m height in RCC

is proposed at the end of HRT. One pressure shaft of 4.3 m diameter from the

Surge shaft is envisaged leading to the Valve House after trifurcation to 2.5 m

dia shafts, where it will be connected to butterfly valve of 2.5 m diameter.

Three numbers of penstocks of 2.5 m diameter each having a length of 265 m

are proposed to connect valve house to power house. Surface powerhouse

(69.65 m X 16.55 m X 34 m) is proposed on the left bank of the Nallah Sindh to

house 3 Francis units of 31 MW each with MIV control on the upstream.

245 families belonging to four villages will be losing their land due to acquisition

of 9.5 ha and 14.5 ha land in Ganderbal and Preng village panchayats

respectively.

EIA studies of the project, based on the ToR approved by the MoEF have been

conducted and the report submitted to the MOEF for accord of clearance.

On the basis of the primary and secondary data collected in respect of the

project affected families, a draft R & R Plan was formulated in consonance with

the principles enunciated in the National Resettlement and Rehabilitation Policy,

2007, notified by Government of India. Besides meeting the mandatory

requirement, certain works relating to social welfare and community

development are also considered in consultation with local authorities and

representatives of affected families, to make the R&R Plan for the proposed

project so that a greater degree of acceptability for implementation of the plan

is achieved.

The total execution period for the entire works of the project including testing

and commissioning is planned to be 57 months. The construction is assumed to

start from March’2013 and get completed by November’2017.

5.4 Present Status:-

Being a multi-purpose project, its DPR has been submitted to CWC for

clearance. CWC/CEA have already cleared the hydrology, floods studies and

power potential of the project. Appraisal is expected to be completed within

three months i.e. by Dec. 2012.

Two stage bidding has been adopted for this project for implementation of the

project through EPC mode. 9 bids have been received against RfQ floated.

The bids have been evaluated. RfP is being issued shortly among the qualified

bidders.



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6. 48MW Lower Kalnai HEP

6.1 General

The Lower Kalnai Hydel Project in Jammu and Kashmir State is a run of the river

Hydropower project. The project envisages diversion of Upper Kalnai and

Kaguneged Nallah, about 200 m downstream of their confluence at Dunadi by

constructing a concrete dam of 49 m height (above the deepest foundation)

across the Lower Kalnai River, small tributary of river Chenab.

6.2 Location

Project area is located in district Doda of Jammu and Kashmir State with

headworks at Dunadi having latitude 33º - 8’ – 6” (N) longitude 75º - 45’ - 30” (E).

The project site can be approached by National Highway I-A (Jammu to

Batote) and National Highway I-B (Batote to Thathri) having a distance of 200

Km. Further the head works can be approached through 7km long link road

from Thathri to Dunadi.


48MW (2 X 24) Lower Kalnai Hydro Electric Project is proposed utilizing the stream

flows of the Lower Kalnai River, a tributary of the Chenab River, in Kistwar district

of Jammu & Kashmir with a gross head of 211.5 m and Net Head of 198.0 m .

The project envisages construction of a 49 m high dam (above the deepest

foundation level of EL 1088.00m) on the Lower Kalnai River near Dunadi village

with a gross storage capacity of 1.86 Mcum at FRL 1135 m. The annual yield from

the catchment area of 958 sq.km works out to be 584.8 MCM.

River diversion works comprising one (1) no. 7 m diameter D- shaped diversion

tunnel on the right bank with upstream and downstream cofferdams on the

river, which will be finally plugged with a Bulkhead gate of 7mx7m size before

reservoir filling.

The 49 m high (above deepest foundation level of EL1088.00 m) Concrete

Gravity Dam shall have 4 bays of Surface Spillway with crest at El 1120.00 m.

Control shall be with Radial Gates of size 10m X 15m operated by Hydraulic

Hoists. Storage at FRL of 1135.00 m shall be 1.86 MCUM.

A Power Intake Structure is proposed on the left bank of Lower Kalnai River just

upstream of the Dam. The Intake is provided with two bell-mouth openings each

having an Intake gate of 2.0m (W) x 3.0m (H) size.



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Water is proposed to be diverted through a Water Conductor System (WCS) of

4.56 km (including 3.96 Km long Head Race Tunnel) with a Surge shaft proposed

at the HRT. A Power House is proposed on the left bank of Lower Kalnai River

about 200 m upstream of its confluence with Chenab River.

The Desilting arrangement comprises two underground chambers 60 m (L) x 12

m (W) x 9.8 m (D) each having four nos. tapering hoppers at the bottom.

Two numbers feeder tunnels take off from the Power Intake structure provided

with separate intake gate for each of them. These feeder tunnels are of 3m dia

D-shaped section and are 425m and 464m long, respectively. Each of the

feeder tunnels join the two chambers of Desilting Chamber. Two more small

length 3m dia D-Shaped tunnels (55m each) take off from the outlet ends of

each desilting chambers to carry clear desilted waters from the Desilting

Chamber.

A 3.96 Km long Head Race Tunnel (HRT) of 4.0 m finished diameter has been

proposed to carry the silt free waters from the Desilting Chamber. This D-shaped

tunnel, proposed on the left bank of river has been designed for a discharge of

30 m3/s. One number intermediate adit located downstream of the desilting

chamber, after the two short tunnels join into a single tunnel of 4 m diameter,

has been proposed for construction of headrace tunnel, feeder tunnels and the

Desilting Chamber. The Head Race Tunnel would terminate at an underground

Surge Shaft of 14 m dia and 39.0 m height. This restricted orifice type shaft shall

have a 4m diameter and 5.0 m high vertical riser at its bottom to connect the

Surge Shaft to the HRT at its tail end and the Pressure Shaft at it u/s end.

One number Pressure Shaft of 3.0m dia and 45 m length is proposed to take off

at the bottom of vertical riser of Surge Shaft, to carry flows further to the

Powerhouse. This Pressure Shaft bifurcates into two branches of 2m dia of

surface penstocks, just u/s of a Valve House proposed to control flow into any or

both of the branch penstocks. After the Valve House, the branch Penstocks

would run as inclined penstocks for about 220m length after which these shall

run as Pressure Shafts for 80.0m upto the Powerhouse.

A Surface Powerhouse of size 55 m long x 23.45 m wide x 32.4 m high has been

proposed on the left bank of river Lower Kalnai about 200m upstream of its

confluence with River Chenab at Thathri. The Powerhouse will house 2 Francis

turbines driven generating units of 24 MW each in the machine hall along with

MIV for each of them.

A132 KV switch yard of 63m x 40m size has been located adjacent to power

house on the left bank of the Lower Kalnai River, where the transformers are also

located. Power shall be evacuated through a 3 km long, double circuit 132 kV,



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transmission line from the switchyard to the existing pooling station at Thathri. 132

kV Pooling Station near the power house is connected to the Grid.

The design energy of the project shall be 219.30Gwh.

The IWT clearance has been obtained. State level Environmental Impact

Assessment Authority has accorded clearance. Land acquisition is under

process. Clearance has also been obtained from State Pollution Control Board,

Power Development, wildlife, tourism., fisheries and irrigation departments.

Construction methodology and equipment selection has been formulated and

planned in such way as to commission the project in a total period of 48 months

including infrastructure works.

6.4 Present Status

The project is being implemented by Jammu & Kashmir State Power

Corporation, JKSPDC, through EPC mode. Single drop two cover tendering

procedure has been adopted for award of the contract on EPC basis. Nit has

been floated on 15.09.2012. The project is targeted to be awarded for execution

by December 2012.

7. 37.5 MW Parnai HEP

7.1 General

Parnai Hydro-electric Project is a run of the river project. The project envisages

diversion of designed discharge of 12.51 cumecs of water of Suran River

downstream of the confluence of Parnai and Chang nallah, at Bafliaz through a

tunnel across Jaranwali ridge for generating 37.5 MW of hydro power near Bata

Durian village and dropping tail waters into Mendhar nallah. Parnai and

Mendhar nallah are both tributaries of Suran / Poonch river, which, in itself, is a

tributary of river Jhelum.

7.2 Location

The entire project area is well connected by a network of pucca roads.

Diversion site at Bafliaz is approachable from Jammu-Poonch road via two

passes namely, Bimber Gali and Dera Gali Pass.

Bafliaz is at a distance of 212 km. from Jammu via Dera Gali and 224 km from

Jammu via Bimber Gali pass. Since Dera Gali pass remains covered by snow for

a greater part of the year, the main connection for the purpose of project work

is via Bimber Gali. Geographical Coordinates are as under:-

Longitude: 74⁰21'08" E to 74⁰15'30” E



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Latitude: 33⁰36'34" N to 35⁰35'15” N


Parnai Hydro-electric Project envisages utilization of Suran River waters for power

generation to the tune of 37.5 MW. Suran is a tributary of river Jhelum. Diversion

of water upto a maximum discharge of 14.22 cumec is envisaged by

constructing a barrage across the river at Bafliaz-just downstream of the

confluence of Parnai and Chung nallahs. The proposed water conductor is 8.90

km long tunnel across Aran-wali-Galli with inlet portal at Bafliaz and exit portal at

Bata Durian where fore bay site has been proposed. Power house shall be

constructed on upstream of the confluence of two drainages flanking the Kallar

Mehra ridge on Mandhar side, below Bata Durian village. Tail waters shall be

fed into Mandher Nallah where it is shall be used for irrigation purposes. The

annual yield from the catchment area of 372 sq.km works out to be 490.93

MCM.

The Pond level at the headworks shall be 1547.00 m, with M.D.D.L. of 1543.60 m

Major project components are:-

A Barrage 107 m long with 2 numbers of undersluice bays and 7 numbers of

spillway bays;

One desilting basin with two chambers of 90m x 7m each with average

depth of 5m

3.2m dia finished D-shaped Head Race Tunnel about 8.90 km long with

Design Discharge of 12.51 cumecs

An approach channel to forebay of 300m length;

A forebay tank of40m x 10m x 5.5m

A 2.0 m dia steel lined pressure penstock with three 1.15m Dia penstock

branches off taking from it for feeding the turbines;

71m X 16.6m X 22m Surface Powerhouse with three vertical shaft Pelton

wheel Units of 12.5 MW each with Gross Head of 392.0 m and Net Head of

373.0 m

A tail race with 5 m x 5 m collection chamber and Trapezoidal shape with

base width 4.0 m and height as 2.25 m RCC channel shall be provided.

An open to sky, restricted orifice type 4.0 m dia, 69 m high surge shaft has

been provided to take care of the surge in case of load fluctuation/throw

Off



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A steel lined Pressure Shaft of 2.0 m dia. and 1733 m long which shall be

trifurcated into three No. Penstocks each of 1.15 m dia. and 70 m long

The annual Design energy of the project is computed as 224.01 MU.

The project is targeted to be construction in 48 months.

A provision for two numbers 132 kV outgoing feeders bays has been made for

evacuation of power generated from the project. An 8 km long 132 kV double

circuit transmission line from the project switchyard up to the nearest 132 kV grid

substation of JKPDD at Draba is proposed to be laid for power evacuation

which a part of Parnai project.

Environment Impact Assessment (EIA studies/EMP) have been conducted and

adequate provision for Catchment area treatment and other environmental up

gradation stand, kept in the DPR. Environmental clearance in respect of the

Project has been accorded by State Level Environment Impact Authority Govt.

of J&K vide their letter no dated 24.12.2010.

As per the findings of the socio-economic survey of the affected families due to

this project, the details are as under:

(i) Total number of families being affected 66

(ii) Total number of families losing land (fully affected) 1

(iii) Total number of families losing land only (partly affected) 1

(iv) Number of villages affected 5

7.4 Present Status

The IWT clearance has been obtained. State level EIAA has accorded

clearance. Land acquisition is under process. Clearance has also been

obtained from State Pollution Control Board and wildlife deptt.

Tenders were invited for implementation of the through EPC mode. Process has

been completed. Contract is being shortly awarded to the successful

bidder/lowest bidder.

8. Dah Hydro Electric Project (9 MW)

8.1 General

9MW (3X3) Dah Hydro Power Project has been envisaged as a run–of-the–river

scheme to utilize the hydro power potential of perennial discharge available in

Dah nala, a tributary of Indus River.



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8.2 Location

Dah Small hydro power project is located on the Dah nala near Dah villages in

Leh district of J & K. The site is well connected by road to all major towns of

Ladakh region. The project site is located by the side of Kargil- Leh road via

Batalik at a distance of about 735 Km from Jammu and 170 km from Leh.

Diversion site is having longitude of 76°28’35’’ and latitude of 34°39’18’’.


The annual yield from the catchment area of 161 sq.km works out to be 177.7

MCM.

Dah HEP is essentially a run-of-river scheme with little pondage, utilizing inflows of

Dah Nala for power generation with a surface power house on the bank of

Indus. The scheme can be operated as a base station with firm power of

installed capacity of 9MW for 6 months and for the remaining six months the

availability varies from 9MW to 4.68MW. Installed capacity of the project has

been proposed as 9 MW comprising 3 units of 3MW each Pelton turbines .The

annual energy generation is 63.92 million units and the Design discharge is 3.54

m3

The power generated will be stepped up to 133 kV through 3 No. 4000 kVA, 6.6

kV/133 kV step up transformer and shall be delivered to nearby 133 kV grid

substation at Khaltsi which is at a distance of 30 km from generating station.

Double circuit 133 kV line has been proposed and the cost included in the

report.

The power shall be generated between EL 30575.50m and confluence with

Indus El 2761.71.00m, with a net head of 282.92 m . The nala bed has an

average slope of 1 in 20 at diversion weir site and its minimum average

discharge is 1.83 cumecs. The high flood discharge of this nala at the location of

the diversion weir is estimated to be 135 cumec. The total length of the water

conductor system up to Power House of the project is about 3489 meters. The

principle components of the project are as follows:

a. A weir of 3.5 m high with 16m water way and 2.0 wide under sluice.

b. Cut & Cover Feeder Channel of 65m length 1.6m bed width and 1.85m

over all depth.

c. Desilting Tank of 45 m length including transition and 6m width.



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d. Cut & Cover Power Channel of 2751 m length and of size 1.4m wide and

1.85m deep.

e. Forebay of 22 m length and 8 m wide with pondage depth of 2.5m.

f. Surface Penstock of 1.25 m dia and 606 m length.

g. Surface Power House of size 36.83 m (length) x 19 m (Wide) x 18 m (high).

h. Tailrace Channel of 113 m length and size of 1.5m (wide) and 1.85 m

(deep).


and commissioning shall be 48 months.

The locations of all the components is so selected that it requires about 4.5 m

wide strip of land for the Power Channel along hill slope in about 2751 m length,

450 Sq m at forebay and about 1500 Sq m area for Power House. It does not

cause any environmental and ecological imbalance of the area. No

resettlement is involved.

8.4 Present Status

The project was tendered out for implementation on EPC basis. All requirements

as per the tender documents have been completed. The project is being

awarded to the successful/lowest bidder. All the necessary clearances including

the Indus Waters Treaty clearance, Pollution Control Board clearance,

clearance from irrigation Deptt. are available. Power purchase agreement

has also been signed. Land is available and its acquisition is under progress.

9. Hanu Hydro Electric Project (9 MW)

9.1 General

9MW (3X3) Dah Hydro Power Project has been envisaged as a run–of-the–river

scheme to utilize the hydro power potential of perennial discharge available in

Hanu nala, a tributary of Indus River.

9.2 Location

Hanu HEP is located on the Hanu nala near Hanu villages in Leh district of J & K.

The site is well connected by road to all major towns of Ladakh region. The

project site is located by the side of Kargil- Leh road via Batalik at a distance of

about 705Km from Jammu and 145 km from Leh. Diversion site is having

longitude of 76°37’21’’ and latitude of 34°34’30’’.




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The annual yield from the catchment area of 372 sq.km works out to be 490.93

MCM.

Hanu Small Hydro Project is essentially a run-of-river scheme with small pondage,

utilizing inflows of Hanu Nala for power generation with a surface power house

on the bank of Indus. The scheme can be operated as a base station with firm

power of installed capacity of 9MW for 6 months and for the remaining six

months the availability varies from 9MW to 2.63MW. Installed capacity of the

project has been proposed as 9 MW comprising 3 units of 3MW each Pelton

turbines with a net head of 232.70m .The annual energy generation is 58.00

million units.

The power generated will be stepped up to 133 kV through 3 No. 4000 kVA, 6.6

kV/133 kV step up transformer and shall be delivered to nearby 133 kV grid

substation at Khaltsi which is at a distance of 30 km from generating station.

Double circuit 133 kV line has been proposed and the cost included in the

report.

The locations of all the components is so selected that it requires about 4.5 m

wide strip of land for the Power Channel along hill slope in about 3574 m length,

450 Sq m at forebay and about 1500 Sq m area for Power House. It does not

cause any environmental and ecological imbalance of the area. No

resettlement is involved.

The total length of the water conductor system up to Power House is about 4300

meters. The principle components of the project are as follows:

a) A weir of 3.5 m high with 16m water way and 2.0 wide under sluice.

b) Cut & Cover Feeder Channel of 49.5m length 1.8m bed width and 1.9m

over all depth.

c) Desilting Tank of 56.4 m length including transition and 10m width

d) Cut & Cover Power Channel of 3574 m length and of size 1.6m wide and

1.85m deep.

e) Forebay of 23 m length and 10 m wide with pandage depth of 2.5m

f) Surface Penstock of 1.25 m dia and 608 m length

g) Surface Power House of size 36.83 m (length) x 19 m (Wide) x 18 m (high)

h) Tailrace Channel of 140 m length and size of 2m(wide) and 1.85 m (deep)


and commissioning is planned to be 48 months.



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9.4 Present Status

The project was tendered out for implementation on EPC basis. All requirements

as per the tender documents have been completed. The project is being

awarded to the successful/lowest bidder. All the necessary clearances including

the Indus Waters Treaty clearance, Pollution Control Board clearance,

clearance from irrigation Deptt. are available. Power purchase agreement

has also been signed. Land is available and its acquisition is under progress.

power scenario in j&kjkspdc.nic.in/tender_files/2012/cdm/project idea notes section iii.pdf ·...

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