DSG - Feasibility Report Report

Dhanalkshmi Srinivasan Charitable & Educational Trust

Proposal for Establishing 1X250MW TPP Near Tuticorin, Tamilnadu

Feasibility Report

June 2010

FICHTNER Consulting Engineers (India) Private Limited Chennai, India

Dhanalkshmi Srinivasan Charitable & Proposal for Establishing 1x250 MW TPP Educational Trust, Perambalur Feasibility Report

Doc. No. 1101113-ME-FSR-700-001 FICHTNER INDIA Page : 2

Table of Contents

1. Introduction and Background..................................................................................................4

2. Site Features..............................................................................................................................4

3. Project location .........................................................................................................................5

3.1 Access..............................................................................................................................5

4. Evaluation & Recommendations .............................................................................................6

5. Necessity and Justification of the Project..............................................................................8

5.1 Extent of land requirement .............................................................................................11 5.2 Project Schedule and Implementation ...........................................................................12

6. Salient Technical Concepts ...................................................................................................12

6.1 Main plant.......................................................................................................................12 6.2 Steam Generator and Accessories ................................................................................13 6.3 Cooling Water System ...................................................................................................14 6.4 Water Requirement ........................................................................................................14 6.5 Coal Handling System....................................................................................................14 6.6 Coal Linkage & Transportation ......................................................................................15 6.7 Ash Handling System.....................................................................................................15

7. Electrical System.....................................................................................................................16

7.1 Power Evacuation ..........................................................................................................16 7.2 Construction Power........................................................................................................16

8. Environmental and Pollution Aspects ..................................................................................16

Appendix - 1 Key Features of the Project site.................................................................19 Appendix - 2 Typical Coal Analysis.................................................................................21 Appendix - 3 Typical Fuel Oil Analysis............................................................................22 Appendix - 4 Indicative Seawater Analysis .....................................................................23 Appendix - 5 Financial and Plant Data............................................................................24



List of Abbreviations

Abbreviation Expansion

AC Air Conditioning

APH Air PreHeater

BMCR Boiler Maximum Continuous Rating

BTG Boiler Turbine and Generator

CEA Central Electricity Authority

CERC Central Electricity Regulatory Commission

CPCB Central Pollution Control Board

CRZ Coastal Regulation Zone

CT Cooling Tower

CW Cooling Water

DM Demineralised

DMCW DeMineralised Cooling Water

DP Desalination Plant

EPC Engineering, Procurement and Construction

ESP Electro Static Precipitator

FGD Flue Gas Desulphurisation

GCV Gross Calorific Value

HEA High Energy arc

HFO Heavy Fuel Oil

IPP Independent Power Producers

LDO Light Diesel Oil

MOEF Ministry of Environment and Forest

MPa Mega Pascal

NFPA National Fire Protection Association

O&M Operation and Maintenance

PLF Plant Load Factor

PPA Power Purchase Agreement

SH/NH State/National Highway

SIR Special Investment Region

SPV Special Purpose Vehicle

TMCR Turbine Maximum Continuous Rating



1. INTRODUCTION AND BACKGROUND

The Dhanalakshmi Srinivasan Charitable and Educational Trust, founded in the year 1994, by

Shri.A.Srinivasan, has been in the forefront of providing quality education at affordable cost

in the region of Perambalur. The trust founded out of an immense passion for contributing to

the society, strives to promote the cause of education. The trust today runs 16 instututions,

technical & non technical, in and round Perambalur catering to the educational quest of the

students. These institutions are corner stones of affordable quality education.

M/s. Dhanalakshmi Srinivasan Sugars Pvt. Ltd., a group company of Dhanalakshmi

Srinivasan Educational Institutions aims to promote an integrated sugar complex with

3500TCD sugar plant, 23MW cogeneration plant and 60KLPD Multi Product Distillation Unit

at Udumbiyam Village, Veppanthattai Taluk, Perambalur District in Tamilnadu

Dhanalakshmi Srinivasan Group, is currently interested for entering into Power Generation

field and in establishing a coal based 1x250 MW Thermal Power Plant in the District of

Tuticorin, Tamilnadu

In this context, for installation of the thermal Power Project, Dhanalakshmi Srinivasan Group

have appointed Fichtner Consulting Engineers (I) Pvt. Ltd., Chennai as their Consultant/

Engineer for preparation of Detailed Project Report of the Project. Accordingly, site visit for

the proposed project areas was arranged and joint inspection was held. The pre-feasibility

study is intended to aid such preliminary evaluation of the project taking into consideration,

the proposed sites features and the land suitability. The details and conclusions provided

here are based on our understanding of the project site proposed, the data collected at the

project site and our experience.

2. SITE FEATURES

Four sites were inspected near Tuticorin and are detailed below:

Site 1 : Eppothum Ventran Village (at a distance of 26 Km from Tuticorin)

Site 2 : S.kumarapuram Village (at a distance of 17.5 Km from Tuticorin)

Site 3 : Ottapidaram Village (at a distance of 13km from Tuticorin)

Site 4 : K.Shanmugapuram Village (at a distance of 11 Km from Tuticorin)

In and around Tuticorin, large numbers of thermal Power plants are under consideration, as

indicated below:

1. TTPS- Stage IV by SEPC – 1 X 525 MW

2. TTPS extension by TNEB / NLC – 2X 500 MW

3. Ind- Bharath – 3 X 75 MW

4. Coastal EnerGen- 2 X 660 MW

5. Udangudi SCTP- TNEB/ BHEL – 2 X 800 MW



Bringing coal through Tuticorin Port is playing a vital role in the installation of the above

Projects and the same advantage is applicable to the proposed project also.

3. PROJECT LOCATION

3.1 Access

Site-1 (Eppothum Vendran):

The proposed site is very near to National Highway No.NH-45B connecting Tuticorin &

Madurai and the nearest city is Tuticorin which is 26 KM from the proposed site. The nearest

Tuticorin Airport is 40kms away from the site, Tuticorin Harbor is 34kms away and Tuticorin

Railway Station is 30kms away from the proposed site. The nearest approach road to the site

is NH-45B which is just 500m away and the source of sea water from Gulf of mannar and it is

located 22km away from the site. The Ind-Bharath Power India Ltd having a Bio-mass power

plant nearby and their coal based TPP having a capacity of 3x75MW is about 10 kM away.

The site is not having any habitant inside.

Site-2 (S.Kumarapuram):

The proposed site is very near to National Highway No.NH-45B connecting Tuticorin &

Madurai and it is located at about 8 kM away from the above site and about 17.5 kM away

from Tuticorin town. The source of sea water from the Gulf of Mannar is 17.5 km away from

the site. The site is not having any habitant inside.



Site-3 (Ottapidaram): The proposed site is very near to National Highway No.NH-45B connecting Tuticorin &

Madurai and it is located at about13 kM away from Tuticorin Town. The source of sea water

from the Gulf of Mannar is about 7.0 km away from the site. The site is not having any

habitant inside.

Site-4 (K.Shanmugapuram):

The proposed site is very near to Kurukusalai to Vilathikulam state highway and at a distance

of 10km in the eastern direction from Kurukkusalai. The nearest National Highway No.NH-45

(East coast road) connecting Tuticorin & Ramanathapuram at a distance of 5 km from the

site. The nearest city is Tuticorin which is 11 km away from the proposed site. The nearest

Airport (35 kms), Harbor (20 kms) and Railway Station (22 kms) for the proposed site are also

Tuticorin.

4. EVALUATION & RECOMMENDATIONS

Based on the above aspects and various site features of the four sites are shown below: Sl. No

Particulars Site-1 Eppothum

Ventran

Site-2 S.kumarapuram

Site-3 Ottapidaram

Site-4 K.Shanmugapuram

1. Land Availability 1400 acres (For Sale deed)

2000 acres (Total area available up

to maximum)

600 acres (For Sale deed) 830 acres

(Total area available up to

maximum)


(Total area available up to maximum)


(Total area available up to maximum)

2. Land Ownership Private Private Private Private

3. Present Land Use Waste land Partially Waste land & Cultivation

land

Waste land only Waste land only

4. Distance from Sea Water

22km 17.5km 7km 5km

5. Fuel Source-Establishing Coal Jetty & Coal Movement

22 Km from sea 17.5 Km from sea 7 Km from sea and 5 Km from sea

6. Power Evacuation (400kV)

PGCIL have to be approached




7. Accessibility 0.5km from National high way

(NH-45B) connecting Tuticorin to

Madurai & 26km from Tuticorin

Town.

1km from National high way (NH-45B)

connecting Tuticorin to

Madurai & 17.5km from Tuticorin

Town.

Touching national high way (Tuticorin-Madurai) and 5Km from ECR and 13 kM from Tuticorin

Town

1km from National high way (NH-45B) connecting Tuticorin

to Madurai & 17.5km from

Tuticorin Town.



Sl. No

Particulars Site-1 Eppothum

Ventran

Site-2 S.kumarapuram

Site-3 Ottapidaram

Site-4 K.Shanmugapuram

8. Cooling water availability

22 Km from sea and to cross Two

high ways to establish the cooling water

drawal

17.5 Km from sea and have to cross Two high ways to

establish the cooling water

drawal

7Km from sea and to cross ECR and

45B establish cooling water from

sea

5 Km from sea and have to cross ECR

high ways to establish cooling

water drawal

9. Environmental Considerations

NIL NIL NIL NIL

10. Population to be displaced

YES YES NIL NIL

11. Remarks Poor site accessibility due to Coal transport-

tation and Sea water intake

facilities (22km away from Gulf

of mannar & 34km from Port)

Poor site accessibility due to Coal transport-

ation and Sea water intake

facilities (17.5km away from Gulf of mannar & 34km

from Port)

Suitable Site Suitable Site

Recommendation:

Out of the four sites inspected site no.3 (Ottapidaram) is considered to be best suited for the

project in view of land availability and coal transportation modalities. The proposed site

comprises of mostly barren land and there is no agriculture, cultivation or buildings existing in

the proposed land to be acquired for the thermal station.

The scarcely populated villages are located outside the proposed area. Hence the identified

land will not have any rehabilitation and resettlement (R&R) issue.

Topography of the proposed site appears almost flat, requiring no major filling/cutting works.

Ponds, wells are not available / existing within the proposed site. But some leveling of the site

has to be carried out, if found necessary. There is no rock and the entire area is fine Black &

Red mixed soil type and there is no ground water available inside the plant area. One dry

water canal which is not in use for many years is available at northern side.

No preliminary works such as topography survey and soil testing have been conducted at the

proposed site to identify the soil characteristics.

Following factors are influencing the selection of the site:

a. Proposed site is nearer to Harbor at Tuticorin for utilizing unloading transportation

facilities of coal. Railway siding from Madurai to Tuticorin line can be considered as a

viable option for transporting coal to the plant when the above line comes into existence,

which is in the proposal stage.



b. Availability of adequate cooling water from sea (Gulf of Mannar). However pipe line

routing has to be finalized during detail engineering.

c. Availability of adequate land for locating the power plant adjacent to the national highway

from Madurai to Tuticorin and from ECR which is 5 KM from the proposed site.

d. Suitability of land from topography and geological aspects.

e. Proximity of National Highways for transport of fuel & heavy equipments.

f. Facility for interconnection with transmission system for evacuation of power. At present

the nearest 400 kV substation from the proposed site is at Abisekapatti Substation near

Tirunelvely which is 50kM away from the site, controlled by Power Grid Corporation of

India Limited (PGCIL). It is expected that PGCIL will have their future 400kV Substation in

and around Tuticorin, since more power projects are coming up in the vicinity and

requested for Long Term Open Access (LTOA) from PGCIL.

g. Environmental aspects are conducive for installation of high capacity plant.

h. Availability of infrastructure facilities at Tuticorin. Considering the above, the proposed Ottapidaram site (Site No.3) is very suitable for putting

up of 1 X 250 MW Thermal power plant.

5. NECESSITY AND JUSTIFICATION OF THE PROJECT

Lack of availability of sufficient electric power has always been one of the greatest deterrents

to the growth of industry in the state. To mitigate the gap between demand and supply,

installation of power projects of any capacity will help to a great extent. In this direction, the

proposal of DSG, to install 1x250MW in the district of Tuticorin, will be of immense use to the

state and to the southern Grid as well. The availability of power in Tamilnadu and the

Southern Region and the anticipated shortage are brought out in various surveys conducted

by Government of India as shown below:







PEAK & ENERGY TABLE

In view of the above deficiency in peak demand (MW) and Energy Demand (GWhr), it is

absolutely justifiable to have the 250MW TPP installed in a location where the coal and

cooling water requirements can be made available and there is no R &R issue for locating the

plant. The total cost of the project including Interest During Construction (IDC) and Financing

Charges (FC) works out to Rs. 13190.34 Millions (Rs. 5.28 Crores/MW) and the energy cost

during first year of operation works out to Rs. 3.25 per unit.

5.1 Extent of land requirement

The land required for putting up 1 x 250 MW Power Plant is summarized below;

Sl.No. Description Area in Acres

1 Power Block 30

2 Coal Area 60

3 Water Treatment Block, Fuel oil area, Workshop, Roads, Laydown area, etc.

100

4 Cooling Water Channel, pumping and piping system 75

5 Switchyard 20

6 Administration Block and non plant facilities 45

7 Ash Dyke 25

8 Township 100

9 Green Belt 195

Total 650

The area required will be trimmed during preparation of the DPR.



5.2 Project Schedule and Implementation

The project schedule is to synchronise the 250 MW unit in 33 months reckoned from the date

of award of the Main Power Equipment (viz.) STG package (Supply, erection &

commissioning) contract for the project. This schedule is based on in-house estimates of

equipment delivery and construction schedules. The first synchronization of the unit will be

three months ahead of commercial operation date (COD), thereby indicating that the unit will

be on COD from 36 months from the date of placement of order for the main equipments

It is proposed to execute the project under the following four (4) major EPCs:

1. Main Power Plant EPC,

2. Sea Water Intake and outfall with terminal point at the plant boundary

3. Coal transportation which will include unloading of coal at the port, intermediate storage

near port area and transporting by trucks up to the plant unloading area.

4. Other balance of plant including water treatment plant, coal and ash handling system, fire

protection system, plant compressed air system, fuel oil handling system, electrical

systems including 400kV switch yard, etc.

6. SALIENT TECHNICAL CONCEPTS

6.1 Main plant

6.1.1 Steam Turbine

The steam turbine will be 3000 rpm, tandem compound, single reheat, double casing,

regenerative, condensing, horizontally split, three-cylinder machine with six (6) uncontrolled

extractions for regenerative feed water heating. The turbine will be designed for main steam

parameters of 152 kg/cm²(abs) at 540°C±5°C before emergency stop valves of HP turbine

and reheat steam parameters of 36 kg/cm² (abs) and 540°C±5°C at inlet to IP turbine. The LP

turbine will exhaust against a condenser pressure of about 0.085 kg/cm2 (abs). At turbine

valve wide open (VWO) condition the turbo-generator set will be able to operate continuously

with a throttle steam flow of about 105% turbine MCR condition.

6.1.2 Condensing Equipment

Double pass surface condenser capable of maintaining the required vacuum while

condensing steam at the maximum rating of the turbine will be provided. Other recoverable

steam and condensate will also be routed to the condenser shells. The steam will be

condensed in the condenser by circulating water passing through the condenser tubes. The

condenser arrangement will be such that on-load maintenance of one half of the condenser at

a time is possible by isolating the same from cooling water inlet and outlet sides. The



condenser will be of divided water box design with rolled steel construction of body and water

chamber. Tubes will be of titanium and tube sheet will be of mild steel with titatnium overlay to

maintain non-corrosive character for seawater cooling. The condensers will have integrated

air cooling zone and it should be designed so as to accept 60% quantity of steam during

turbine HP and LP bypass operation without any undue vibration, thermal stress etc. The

condenser axis will be at right angle to the turbo-generator axis.

6.2 Steam Generator and Accessories

6.2.1 Steam Generator

The steam generators will be drum type, natural circulation, water tube, direct pulverised coal

fired, balanced draft furnace, single reheat, radiant, dry bottom type, suitable for outdoor

installation, top supported and designed for firing 100% imported coal rated to deliver about

820 t/hr of superheated steam at 154 Kg/Cm2(abs), 540°C (±5°) when supplied with feed

water at a temperature of 246°C at the economiser inlet.

The combustion system will be provided for pulverised coal firing with Low NOX type coal

burners. The steam generator will be equipped with a front, opposite or axial firing/tangential

firing system. The steam generators will be designed for continuous satisfactory operation

with the coal expected for this station without any need for auxiliary fuel oil for fire

stabilisation. The furnace will be conservatively designed for fuel to burn completely and to

avoid any slagging in the furnace and excessive fouling in the super heater sections of the

boiler. The design flue gas velocities will be carefully selected to minimise erosion of pressure

parts and other vital components on account of ash. The steam generators will be designed in

accordance with the latest provisions of Indian Boiler Regulations.

6.2.2 Electrostatic Precipitator

Each steam-generating unit will be provided with electro-static precipitators. Each precipitator

will have two parallel gas paths, any of which can be isolated for maintenance when required,

keeping the other path in operation. Each path will have six (6) fields in series for collection of

fly ash, of which, five (5) fields will be in service and the other one will remain as a standby.

The ESP will be such that the outlet flue gas dust content does not exceed 50 mg/Nm3 at

100% BMCR even when one field remains as standby / out of order.

6.2.3 Chimney

A concrete chimney has been proposed for this project. A chimney height of 220 mtrs has

been considered in accordance with the guidelines given by the Central Board for the

Prevention and Control of Water Pollution. The chimney will include openings sized and

located to coordinate with the presently specified configuration of ESP and also be easily

adapted to a future configuration that includes flue gas desulphurization equipment which will

be located in the flue gas stream between the ESP and the chimney. Suitable provisions shall



be made available to fix continuously monitoring equipments for measuring pollutants as per

Pollution Control Board norms

6.3 Cooling Water System

Since the Recommended site is located nearer to sea which is about 7 kM away from Gulf of

Mannar, the choice of cooling system will naturally be sea water system. The type of cooling

system for the condenser may be either of Induced/Natural draft cooling towers or once

through system. In case of once through system the possibility of restricting the hot water

temperature with in a limit of 5 deg C is not possible. So it is necessary to consider Natural /

Induced Draft Cooling Tower to control the blow down temperature letting out to the sea, by

taking blow down from cold water. In view of sea water system being used and to save

energy consumption, natural draft cooling tower is recommended. The cold water blow down

and the desalination plant reject will be let into the sea after carrying out thermal and salinity

dispersion study.

6.4 Water Requirement

Sea water requirement for the proposed 250 MW power plant will be met from the Gulf of

Mannar for make-up for the natural draft cooling tower and desalination plant. Cooling Tower

blow down water will be utilized for ash slurry / bottom ash system.

The detailed water balance will be decided during preparation of DPR.

6.5 Coal Handling System

The coal handling system comprises the following:

• Unloading System, Crushing and Bunker Feeding System

• Stacking, Reclaiming and Bunker Feeding System Unloading System, Crushing and Bunker Feeding System

The unloading system shall be designed considering the receipt of coal by trucks and

Crushers shall be installed if size of coal receipt is +25mm.

Belt conveyor will feed Screens in crusher house. Over size (+) 25 mm coal will feed to Ring

granulator crushers for reducing to (-) 25mm size. Crushed coal from crushers and fines

separated from screens will be discharged on to belt conveyor which will feed to coal bunkers

through traveling trippers.

Stacking, Reclaiming, Crushing and Bunker Feeding System When boiler bunkers are full, the crushed coal will be diverted to stockpile through yard

Conveyor. Reversible stacker cum reclaimer will be utilized for stacking and reclaiming.

Storage capacity of stockpile will be about 45 days. Stockpile will be comprise of trapezoidal



cross section on either side of stacker cum reclaimer. The coal from stock pile will be

reclaimed by stacker cum reclaimer, to feed onto reversible yard conveyor which will be

feeding in to bunkers through conveyor.

6.6 Coal Linkage & Transportation

Coal used for this project shall be 100% imported coal having the characteristics as furnished

in the appendix. It is envisaged that coal will land at Tuticorin Port by means of ships and it

will be forwarded to site through Trucks Alternatively coal can be moved to site by rail

depending upon the availability of railway lines during implementation of the project.

The coal linkage will be key to the planning of layout and ash dyke etc. and it is expected that

the proposal will be firmed up before going in for deciding the main equipments such as the

BTG, coal handling system and ash handling system.

6.7 Ash Handling System

Bottom Ash Removal System Bottom Ash Removal System will consist of a refractory lined W-shaped, water impounded,

storage type, water-cooled bottom ash hopper located directly below the bottom water wall

header of boiler. Bottom ash (BA) will be collected continuously. BA hopper will be provided

with clinker grinders to limit the size of clinkers. Bottom ash and economiser ash slurry will be

collected in the hydrobin and further disposed by the trucks. In emergency case, i.e. non-

availability of ash utilization, bottom ash slurry will be diverted to ash slurry sump and further

to ash pond.

Fly Ash Removal System Fly ash collected in Air pre-heater hoppers and ESP hoppers will be evacuated by vacuum

cum pressure conveying system.

Fly ash can be disposed off in dry mode through buffer hopper. The dry fly ash collected in fly

ash silos will be transported using trucks.

In case of emergency, i.e. non-availability of fly ash utilization, fly ash will be disposed in wet

mode through collector tank and disposed to ash pond through slurry pump.

Ash Pond For estimating the area required for ash dyke, fly ash utilization of 1 year and bottom ash

utilization of 3 years are considered for ash pond design.



Dry ash from the silos will be loaded in to trucks for utilization purpose. For the entire ash

handling system sea water can be used without any problem.

7. ELECTRICAL SYSTEM

7.1 Power Evacuation

Export of Power from the proposed 1x250MW plant can be made through 400kV transmission

lines. At present nearest 400 kV substation from the proposed site is at Abisekapatti

Substation controlled by Power Grid Corporation of India Limited (PGCIL). Hence depending

upon DSEPL’s project schedule, availability of 400kV network at this nearest substation of

PGCIL has to be explored. Accordingly power evacuation voltage has to be finalized.

Moreover, DSEPL’s plan for location of consumers to be considered for connecting to the

PGCIL / TNEB grid network. Based on the above, requirement of additional transmission lines

may be required for installation.

TNEB has already proposed to construct 400kV Substation along with the coming up

2 x 500MW TTPS extension of NLC & TNEB Joint venture project. Hence the power

evacuation through 400kV network of TNEB can also be considered an option.

A clear picture will evolve only after the projects which are under proposal / erection, come to

shape and PGCIL may also participate for power evacuation in this area. However, it will not

pose a problem while this project is taken up for execution.

7.2 Construction Power

Nearest 33kV grid network of TNEB, available at Eppodumventran at about 10KM from the

site can be utilized for tapping (on availability) construction power.

8. ENVIRONMENTAL AND POLLUTION ASPECTS

The major environmental concerns for putting up the proposed power station are as follows;

a) Air pollution

b) Water pollution

c) Noise pollution a) Air Pollution

The Air pollutants from the proposed units shall be controlled by selecting the appropriate

equipment/systems as listed below.



1. SOx Emissions

Presently there is no legislation or norms for limiting the SO2 emissions from coal based

thermal power plants. Currently sulphur dioxide levels are controlled by dispersing the

pollutant to atmosphere through a tall stack.

The minimum stack height to be maintained to keep the sulphur dioxide level in the

ambient within the air quality standards, as furnished below:

Stack Height Requirement for Sulphur Dioxide Control

Generation Capacity Stack Height

Less than 200 MW H=14(Q)0.3

200 MW & more to less than 500 MW 220 m

500 MW and more 275 m

Where,

Q = Sulphur dioxide emission rate in kg/h

H = Stack height in metres With this, the stack height for the 250 MW unit under consideration will be 220 metres.

Currently there is no requirement for installing any Flue Gas Desulphuring (FGD)

equipment. However a provision will be made in the plant layout for installing a FGD plant

in future if required.

2. NOx Emissions

Presently there are no limitations for NOx emissions from the coal fired power plants.

Therefore, special equipment/systems for NOx control are not envisaged.

However the power plant will use coal burners of proven, advanced design to reduce

NOX production, and the steam generator furnace will be provided with over-fire air ports

to further reduce NOX production.

3. CO Emissions

Carbon monoxide (CO) another kind of pollutant hardly exists in the modern power

stations as design of combustion control equipment and the furnace eliminates, almost

completely the possibility of incomplete combustion. The ground level concentration is

expected to be within the limit prescribed by ministry of environment and forest.



4. Suspended Particulate Matter (SPM)

For thermal power stations, depending upon the requirement of local situation, such as

protected area, the State Pollution Control Boards and other implementing agencies

under the Environment (Protection) Act, 1986, prescribe a limit of 100 mg/Nm3 for

particulate matter, irrespective of generation capacity of the plant. The efficiency of the

electrostatic precipitators which remove most of the fly ash from the flue gas, thereby

limiting the quantity of fly ash emitted to atmosphere and the height of the stack which

disperses the pollutants will be around 99.9% to meet the norms of Central Pollution

Control Board (CPCB). However, it will be ensured that particulate emission will be limited

to 50 mg/Nm3.

b) Water Pollution As far as possible, the waste water generated in the plant will be treated and collected in

the guard pond and utilized in the plant. However in case of excess waste during rainy

season / flood water shall be discharged to the natural drainage system available. It is

envisaged to develop the guard pond to be located suitably near the water treatment

plant. The capacity of the pond would be adequate to store 24-hours design liquid

effluent discharge from the station.

c) Noise Pollution The noise level at plant boundary during normal operation is ensured by proper selection

of the system and controlling noise level from originating equipment.

d) Green Belt

Adequate green belt would be developed in and around the project area and the ash

disposal area satisfying the requirement of state as well as Central Pollution Control

Board (CPCB). Plantation near coal stacks and the ash silo area to arrest fugitive dust

are also proposed. These green belts, apart from arresting air-borne dust particles and

acting as noise-barrier, would help in improvement of ecology and aesthetics of the area.



Appendix - 1

Key Features of the Project site

1.0 Project Site : Ottapidaram Village

2.0 Approach to site

2.1 Nearest town : Tuticorin (13 km away from the site)

2.2 Nearest Railway Station : Tuticorin (15 km away from the site)

2.3 Nearest Sea Port : Tuticorin Port (23 km away from site)

2.4 Nearest Airport : Tuticorin (28 km away from site)

3.0 Access Roads : NH-45 highway connecting Tuticorin – Madurai is adjacent to the site

4.0 Atmospheric Conditions : Hot, humid and corrosive - close to Sea front

5.0 Seismic data : As per IS:1893-Latest

5.1 Zone : II

5.2 Intensity : As per IS:1893-Latest

5.3 Importance factor : 1.5

5.4 Soil foundation factor : 1.6

6.0 Meteorological data

6.1 Ambient Air Temperature

Average Monthly Maximum dry bulb temperature

: 40°C

Average Monthly Minimum dry bulb temperature

: 21°C

6.2 Rainfall

Multi year annual mean rain fall : 808.5 mm

Annual rainfall (Minimum) : 450.5 mm

Multi year annual daily maximum rain fall

: 166.6 mm



6.3 Wind velocity

Mean wind velocity : 15 km/hr

Prominent Wind direction : North, North east

6.4 Average Monthly Relative humidity

Mean Maximum humidity (Summer)

: 94%

Mean Minimum humidity (Summer)

: 60%



Appendix - 2

Typical Coal Analysis

Detail of analysis Unit As Received Basis

Total Moisture % Wt 30

GCV Kcal/kg 4500

Proximate analysis Unit Air Dried Basis

Inherent Moisture % Wt 14.5

Volatile Matter % Wt 40

Ash 10

Fixed Carbon 35.5

GCV (kcal/kg.) 5500

Ash Fusion Temperature : IDT 1200 deg C

Grindability Index : 42

Ultimate Analysis Dry ash free basis (%) Wt

Carbon 75.06

Hydrogen 6.45

Nitrogen 0.85

Sulphur 0.84

Oxygen 16.8

* Detailed Indonesian coal analysis to be obtained from the coal supplier.



Appendix - 3

Typical Fuel Oil Analysis

Furnace Oil (FO)

Density at 37°C 960 kg/m³

Kinematic Viscosity at 50oC 180-370 CSt

Sulphur by Weight Basis 4.5%

Water content by Weight Basis 1.00%

Ash content by Weight Basis 0.1%

Sediment by Weight Basis 0.25%

LHV 10465 kcal/kg

Light Distillate Oil (LDO)

Density at 37oC 800 kg/m³

Kinematic Viscosity at 38oC 2-7 CSt

Pour Point (Maximum) 12-18°C

Carbon by Weight Basis 0.2%

Sulphur by Weight Basis 1.0%

Water content by Weight Basis 0.05%

Ash content by Weight Basis 0.02%

Sediment by Weight Basis 1.00%

LHV 10900 kcal/kg



Appendix - 4

Indicative Seawater Analysis

Parameters Unit Value

PH 8.505 Conductivity mmhos/m 56385 Temperature at top surface Deg C 32.0 Turbidity NTU 15.54 Salinity psu 37.275 Suspended solids mg/l 11.55 Total Organic Carbon (TOC) mg/l <6 Cations: Calcium as Ca mg/l 429.45 Magnesium as Mg mg/l 1337.7 Sodium as Na mg/l 13230 Potassium as K mg/l 399 Ammonia as NH3 mg/l BDL Strontium asSr mg/l 2.4885 Barium as Ba mg/l BDL Aluminum as Al (Total and dissolved) mg/l BDL/BDL Manganese as Mn mg/l BDL/BDL Iron as Fe (Total and dissolved) mg/l 0.52/.26 Anions Chloride as Cl mg/l 22142.4 Sulfate as SO4 mg/l 3565.8 Nitrate as NO3 mg/l 1.701 Nitrite as NO2 mg/l 0.042 Bicarbonate as HCO3 mg/l 147 Floride as F mg/l 1.47 Boron as B mg/l 1.449 Phosphate as PO4 mg/l 0.1995 Sulfide/sulphide as H2S mg/l BDL Silica as SIO2 (Total and dissolved) mg/l 4.2/0.32 Other Parameters Dissolved Oxygen mg/l 5.88 Biological Oxygen Demand mg/l 11.55 Phenols mg/l BDL Chemical Oxygen Demand mg/l 65.1 Oil & Grease mg/l <1 Zinc as Zn mg/l 0.1 Copper as Cu mg/l BDL

Seawater Analysis near to site at Tuticorin is indicated above.



Appendix - 5

Financial and Plant Data

Plant Life years 25Installed Capacity ( Average ) MW 250Equity % 30%Basic Return on Equity (RoE) % 16.00%Loan Repayment Period yrs 10 Paid quarterly

Loan Grace Period yrs 1Interest on loan % p.a. 11.50%Quartely Interest Rate % 2.76%Interest on loan ( Post Operative) % p.a. 12.00%Interest on WC Loan % 12.00%

Target Availability % 85.0%Aux. Power Consumption % 8.5%Total Units Exported Million kWHr 1703.27

Fuel Source Imported coalGCV kCal / Kg 4500Station Heat Rate (Gross) kCal/ kWHr 2339Fuel (Coal) Cost Rs. / Tonne 2500Fuel Cost Escalation % pa 2.0%Transit & Handling Losses % 0.8%Sec. Fuel (Fuel Oil) Cost Rs. /KL 48000Sec. Fuel Cost Escalation % pa 4.0%Fuel Oil Density Kg/Lit 0.80GCV of Fuel Oil kCal/Kg 10465

Kcal/lit 8372Specific fuel oil consumption ml / kWh 1.00

O & M Rs. Mio/MW 1.462O & M Escalation % pa 5.72%Additional Compensation Allowance

0-10 Years Rs. Mio/MW 0.00011 to 15 years Rs. Mio/MW 0.01516 to 20 Years Rs. Mio/MW 0.03521 to 25 Years Rs. Mio/MW 0.065

Water consumption m3/h 1451Escalation % p.a. 0.00%

Depreciation

Residual value % 10.00%Plant & Machinery - For first 12 years % 5.28%Plant & Machinery - For balance years % 2.05%

Discount Rate % 12.00%

Documents

DSG - Feasibility Report Report