1TOSHIBA

Steam Turbine

November, 2007

TOSHIBA PLANT SYSTEMS & SERVICES CORPORATION

2INTRODUCTION

3Power Business(approx. 150MW /unit)

Independent Business by TPSC

Work with TOSHIBAas a member of TOSHIBA

Group

Nuclear

Conventional Combined

Fuel Cell Geothermal

Hydro

Co-Gen

CombinedConventional

Green Energy

PARTNERSHIP WITH TOSHIBA

4 EPC Project : TPSC can be most competitive to be an EPC Contractor.

BOP Supply : TPSC can change the scope of supply according to Customer's Business Structure, i.e. TPSC can supply a part of power plant equipment upon Customer's requirement.

STG Supply :TPSC supplies Turbine Generator set.

THERMAL POWER SYSTEMS & SERVICE DIVISIONUnder "ONE THROUGH CAPABILITY," Thermal Power Division targets following three (3) businesses.

5FULL RANGE CLIENTSERVICE

FeasibilityStudy

Planning /Design Procurement

Erection /Installation

Test /Commissioning

MaintenanceService

ManufacturingTOSHIBA)

6Overseas sales & marketing network

Toshiba de Venezuela

Toshiba International Corp.(TX, SF - USA)

Shanghai Rep. Office

Toshiba China Co.,Ltd.(Beijing(HQ), Shanghai)

TAPL (Philippines)

Toshiba International Corp.(Australia)

TAPL (Indonesia)

TAPL (Singapore(HQ))TAPL (Malaysia)

TAPL(Thailand)Toshiba Gulf FZE

(Dubai)

Toshiba International (Europe) Ltd.(UK)

Toshiba India Private Ltd.

Moscow Rep.Office

Johannesburg Rep.Office

Toshiba Info., Industrial & Power Sys. Taiwan Corp.

Toshiba do Brasil(Rio & Sao Paulo)

TAPL: Toshiba Asia Pacific PTE.,Ltd

20 offices in 16 countries

7TOSHIBA STEAM TURBINE EXPERIENCE

8Toshiba Turbine Cumulated Experience

0

500

1,000

1,500

2,000

1950 1960 1970 1980 1990 2000

Cum

ula

tive N

um

ber

0

40

80

120

160

Cum

ula

tive O

utp

ut(

GW

)

For Geothermal

Supercritical

For NuclearFor Combined Cycle

50 GW

1,000

1,500

For Simple Cycle

First Steam Turbine delivered in 1927

Output : 139.1 GWNumber : 1,807

As of Jan. 2005

9THERMAL POWER PLANTS SUPPLIED BY TOSHIBAIN THE GLOBAL MARKET

Total: 1,834 Units, 145,013MW (As of Mar. 2006)

PRD-KGG-AAH00702

Canada

1,427MW

U.S.A19,373MW

Mexico2,512MW

Costa Rica

55MW

Antigua

18MW

Brazil155MW

Venezuela1,418MW

Argentina14MW

Korea2,138MW

2475MWPhilippines1,114MW

Thailand348MW

Australia11,852MW

Indonesia2,950MW

Malaysia2,605MW

Sri Lanka6MW

India1,002MW

South Africa118MW

Botswana33MW

Nigeria56MW

Egypt1,764MW

Cyprus120MW

Lebanon130MW

Bahrain65MWKuwait

4,254MW

Iran255MW Bangladesh

41MW China9,248MW

Puerto Rico214MW

Pakistan137MW

Papua New Guinea135MW

Nauru0.1MW

Myanmar0.9MW

Japan79,346MW

UAE942MW

Bulgaria177MW

Italy990MW

10

MEDIUM / SMALL CLASS STEAM TURBINE

11

G

Exhaust

LPIP

Extraction

HP G

Extraction

LPIPHP GRH

BACK PRESSURE TURBINE

EXTRACTION CONDENSING TURBINE

REHEAT CONDENSING TURBINE

For small electrical output and large thermal output

Exhaust is applicable for process steam, district heating etc.

Low initial cost without condenser

Wide variety of electrical / thermal output combination to meet the demand of clients.

One or plural internal pressure controlled extraction is applicable for process steam, district heating etc.

External control and non-controlled extraction is also applicable for process and feedwater heaters.

For larger electrical output

Tandem compound or Single cylinder

Internal / external control extraction and non-controlled extraction applicable for process and feedwater heaters.

12

HIGH-RELIABILITY, HIGH-EFFICIENCY STEAM TURBINE

Impulse design and inherently rugged compartment-type construction

Compact shell-mounted control valve construction in high-pressure section

High-pressure steam inlet construction True center support construction of the

casing and nozzle diaphragms Spring-backed shaft packing Double-sheet spool-type extraction

control valves

Solid rotor, flexible shaft construction Tilting pad journal bearing Tapered-land type thrust bearing Horizontal split, casing, nozzle, and

packing construction LP and HP EHC control system with

high control accuracy Standard block design

13

Reheat Condensing 24units not larger than 300MW

Electrical Output (MW)

EXPERIENCE of TURBINE TYPE / ELECTRICAL OUTPUT

Extraction Condensing 93units

Straight Condensing 124units

Reheat Extraction Condensing 25units

Back Pressurewith/without

Extraction 81units

1000300200100

14

BACK-PRESSURE TURBINERated Output : 25,000kWMain Steam Pressure : 11.3MPagMain Steam Temperature : 538Back Pressure : 1.27MPag

AUTOMATIC-DOUBLE-EXTRACTION BACK-PRESSURE TURBINERated Output : 35,000kWMain Steam Pressure : 5.9MPagMain Steam Temperature : 440Extraction Pressure : 1.23 / 0.69MPagBack Pressure : 0.27MPag

15

CONDENSING TURBINERated Output : 38,000kWMain Steam Pressure : 2.9MPagMain Steam Temperature : 390Exhaust Pressure : 5.07kPa abs.

CONDENSING TURBINE(2 casing type)For large capacity condensing turbineRated Output : 100,000kWMain Steam Pressure : 8.6MPagMain Steam Temperature : 510Exhaust Pressure : 8.00kPa abs.

16

REHEAT TURBINE (axial flow)Suitable for combined cycle and low floor installation plantsRated Output : 200,000kWMain Steam Pressure : 12.7MPagMain Steam Temperature : 538Reheat Steam Temperature : 538Exhaust Pressure : 8.63kPa abs.

REHEAT TURBINE(2 casing type)For large capacity reheat turbineRated Output : 500,000kWMain Steam Pressure : 16.6MPagMain Steam Temperature : 538Reheat Steam Temperature : 538Exhaust Pressure : 10.2kPa abs.

17

AUTOMATIC-DOUBLE-EXTRACTION CONDENSING TURBINERated Output : 30,000kWMain Steam Pressure : 10.0MPagMain Steam Temperature : 538Extraction Pressure : 1.18 / 0.59MPagExhaust Pressure : 8.63kPa abs.

AUTOMATIC-DOUBLE-EXTRACTION REHEAT TURBINE(2 casing single exhaust flow type)Rated Output : 149,000kWMain Steam Pressure : 16.6MPagMain Steam Temperature : 566Reheat Steam Temperature : 538Extraction Pressure : 3.5 / 0.69MPagExhaust Pressure : 5.07kPa abs.

18

AUTOMATIC-EXTRACTION REHEAT TURBINE(2 casing double exhaust flow type)Rated Output : 300,000kWMain Steam Pressure : 13.9MPagMain Steam Temperature : 535Reheat Steam Temperature : 535Extraction Pressure : 0.25MPagExhaust Pressure : 6.27kPa abs.

Extraction Control Valve (Butterfly Valve)

TOSHIBA Steam Turbine Slide Number 2Slide Number 3Slide Number 4Slide Number 5Overseas sales & marketing networkSlide Number 7Slide Number 8Slide Number 9Slide Number 10Slide Number 11Slide Number 12Slide Number 13Slide Number 14Slide Number 15Slide Number 16Slide Number 17Slide Number 18