May 2015

ALSTOM WORLD WIDE EXPERIENCE OF STEAM TURBINE RETROFITS ON

NUCLEAR POWER PLANTS

© ALSTOM 2014. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

Oconee - May 2014

Agenda

1st topic Introduction Page 1

2nd topic Steam Path Technology and L-0 Selection Page 1

3rd topic Rotor Technology and SCC Page 1

4th topic Rotor Dynamics & Torsional Analysis Page 1

5th topic Data Collection/ Survey Page 1

6th topic Alstom Solutions and Experience Page 1

© ALSTOM 2014. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

Oconee - May 2014

Alstom Nuclear References

© ALSTOM 2014. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

Oconee - May 2014

Extensive Nuclear Retrofit Experience

Introduction - Experience

• Alstom is the number one global supplier of nuclear steam turbines.

• 181 nuclear steam turbines supplied

− 50 Hz and 60 Hz grids− all types of reactors: PWR, BWR, PHWR, Magnox, etc...− 30% of the world nuclear fleet operates with Alstom

turbines & generators

• 240 nuclear turbine cylinders retrofitted/on order

− 30% are HP cylinders− 70% are LP cylinders

• 89 non-OEM nuclear turbine cylinders retrofitted/on order

© ALSTOM 2014. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

Oconee - May 2014

Introduction - Global Footprint

• Tendering & Order Execution Centres are based in:

− Richmond, USA, Elblag, Poland

− Delhi, India, Rugby, UK

− Beijing, China, Mannheim, Germany

• Localised Sales and Project Management Offices in all major market regions (Richmond, USA)

• Global manufacturing footprint

© ALSTOM 2014. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

Oconee - May 2014

Main drivers for retrofitting nuclear LP & HP turbines:

• Replace problematic LP & HP rotors with modern technology

• Obtain additional MW output for the same reactor power

− Improved technology blading−Optimised exhaust area

• Extended power up-rate with increased steam flow

− Address end-loading limits on existing LP’s

• Reduce maintenance costs, extend inspection intervals

• Life extension associated with a plant license extension

© ALSTOM 2014. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

Oconee - May 2014

Agenda

1st topic Introduction Page 1

2nd topic Steam Path Technology and L-0 Selection Page 1

3rd topic Rotor Technology and SCC Page 1

4th topic Rotor Dynamics & Torsional Analysis Page 1

5th topic Data Collection/ Survey Page 1

6th topic Alstom Solutions and Experience Page 1

© ALSTOM 2014. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

Oconee - May 2014

Alstom unique, very powerful ST technology capabilities, covering both

reaction and impulse

Alstom’s unique Steam Turbine technology capabilities,

covering both reaction and impulse.

Reaction

Impulse

Alstom’s Steam Turbine Fleet

© ALSTOM 2014. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

Oconee - May 2014

• Alstom has Impulse & Reaction Technology available.

– Reaction Technology (RTB)

• 50% reaction = 50% pressure drop across fixed & 50% across moving blades

• Drum rotor construction

– Impulse Technology (ITB)• 10% reaction = 90%

pressure drop across fixed & 10% across moving blades

• Disk and Diaphragm construction

Steam Path Technology

Robust control stage

“Alternate torsion”

design

Extensive experience

30 years without

incident

© ALSTOM 2014. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

Oconee - May 2014

Steam Path TechnologyReaction Blading Technology (ITB)

� Features

� Standard blading since 1994

� 3D aerofoils, integral shrouds

� Pre-twisted blades with rigid and

continuous shroud

� No special closing blade

Typical

rotating blade

Typical

stationary blade

� Benefits

� High stage efficiency

� Robust proven design

� Not sensitive to vibrations or flow changes

� Easy replacement and re-installation

� Low maintenance costs

© ALSTOM 2014. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

Oconee - May 2014

• Exhaust area (L-0 blade length) has a significant effect on performance of LP

turbines and the output of the unit

• L-0 blade length should be selected based on the condenser vacuum through the

year (not just original heat balance value)

• Units with low average backpressure can often achieve significantly higher output

from a longer L-0 blade

• Alstom has a broad range of applicable L-0 blades

Alstom LP Blading - Selection of L-0 Blade Length

Steam Path Technology

Technology selected to give maximum benefit:

• Nuclear LP Retrofits

Reaction technology normally selected (best performance/cost ratio)

• Nuclear HP Retrofits

Technology selected on case by case basis

© ALSTOM 2014. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

Oconee - May 2014

Optimise L-0 Diffuser

• Optimise L-0 diffuser design

by 3D CFD to minimise

exhaust loss

• Model includes support and

stiffening plates that affect

flow distribution

© ALSTOM 2014. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

Oconee - May 2014

Agenda

1st topic Introduction Page 1

2nd topic Steam Path Technology and L-0 Selection Page 1

3rd topic Rotor Technology and SCC Page 1

4th topic Rotor Dynamics & Torsional Analysis Page 1

5th topic Data Collection/ Survey Page 1

6th topic Alstom Solutions and Experience Page 1

© ALSTOM 2014. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

Oconee - May 2014

•Welded Rotors used for all Alstom 1800 rpm LP Retrofits

LP Rotor Technology

-Small forgings obtained from a wide range of suppliers

-Small forgings have better metallurgical properties and are

easier to inspect

-Strength level of each forging can be selected to maximise

SCC resistance

-Forgings welded together using a combination of argon arc

and submerged arc welding

© ALSTOM 2014. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

Oconee - May 2014

• Well established technology :

• Used by ALSTOM POWER since the 1920’s

• Applied on nuclear turbine rotors since 1965

• More than 5000 welded rotors supplied for steam and gas turbines

Rotor TechnologyWelded Rotor Experience

• SCC has been recognized as a problem in nuclear turbine rotors for over 40

years. More recently, also affecting fossil LP rotors

• SCC problem has been greatest for shrunk-on disc rotors, although

monobloc rotors are also affected.

• Excellent SCC track record of Alstom welded rotors.

Stress Corrosion Cracking (SCC)

Historical Development

© ALSTOM 2014. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

Oconee - May 2014

• 40 years of ALSTOM research into the factors affecting initiation and

growth of SCC

• ALSTOM UK (ex-GEC) started a comprehensive SCC investigation

program into crack initiation and crack growth in pure steam

environment over forty years ago

• More than 500 long term crack initiation tests, some over 100,000 hours

duration, in wet steam on NiCrMoV and CrNiMo rotor materials with:

– a wide range of yield strengths (90 -150 ksi)

– a wide range of applied stresses (between 20%

and 100% of the yield strength)

SCC Testing - Extensive Research

© ALSTOM 2014. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

Oconee - May 2014

Agenda

1st topic Introduction Page 1

2nd topic Steam Path Technology and L-0 Selection Page 1

3rd topic Rotor Technology and SCC Page 1

4th topic Rotor Dynamics & Torsional Analysis Page 1

5th topic Data Collection/ Survey Page 1

6th topic Alstom Solutions and Experience Page 1

© ALSTOM 2014. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

Oconee - May 2014

Rotor Dynamics

• Low vibration levels without in-situ balancing

• Alstom LP retrofits installed on 15 nuclear units in

USA - None required balancing

© ALSTOM 2014. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

Oconee - May 2014

Torsional Testing Experience

Modification during Design stage

• MaanshanFollowing torsional failure of GE LP, Alstom LP retrofit included a mass wheel to reduce frequency of 2nd generator mode.

• CallawayExisting unit had 2nd generator mode close to 120 hz.Mass wheel added to reduce this frequency.

• Quad Cities and DresdenExisting units had 2nd generator mode close to 120 hz.LP/Gen coupling re-designed to reduce mass and increase frequency.

Recent Alstom nuclear retrofits in USA have had torsional tests carried out by Customer. Eg: North Anna 2, Surry 1, Quad Cities 2, Peach Bottom 3, DC Cook 1

• All had no measured frequencies within ±5% of 120 Hz

• Measured frequencies close to Alstom calculated values.

• No corrective actions required.

© ALSTOM 2014. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

Oconee - May 2014

Torsional Frequencies - SummaryionalAnalysis

• Good correlation between Alstom calculated and measured values

• Torsional frequencies of welded drum type LP rotors are above 200 Hz

• Extensive experience with LP Retrofits on units where Alstom is not the OEM.

© ALSTOM 2014. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

Oconee - May 2014

Agenda

1st topic Introduction Page 1

2nd topic Steam Path Technology and L-0 Selection Page 1

3rd topic Rotor Technology and SCC Page 1

4th topic Rotor Dynamics & Torsional Analysis Page 1

5th topic Data Collection/ Survey Page 1

6th topic Alstom Solutions and Experience Page 1

© ALSTOM 2014. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

Oconee - May 2014

Data Collection/SurveyLaser Scanner

• Use of Laser Scanning Technology

− Well suited to LP retrofits− Alstom uses Leica laser scanner to obtain geometry of pipework, supports, foundation and surrounding equipment.

− From the scan data a CAD model can be generated.

LP Frame, Stiffeners and Condenser GeometryExtraction Pipework Geometry

© ALSTOM 2014. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

Oconee - May 2014

Data Collection/SurveyLaser Scanner

• Each scan is “line of sight”

• Data collected from a series of scans to build up complete geometry.

© ALSTOM 2014. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

Oconee - May 2014

Data Collection/SurveyLaser Scanner

Modeled Pipework

© ALSTOM 2014. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

Oconee - May 2014

Agenda

1st topic Introduction Page 1

2nd topic Steam Path Technology and L-0 Selection Page 1

3rd topic Rotor Technology and SCC Page 1

4th topic Rotor Dynamics & Torsional Analysis Page 1

5th topic Data Collection/ Survey Page 1

6th topic Alstom Solutions and Experience Page 1

© ALSTOM 2014. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

Oconee - May 2014

Experience :Callaway – N2R HP and LP Retrofit

LP Retrofit

HP Retrofit

• GE 38” L-0 replaced with Alstom 48R L-0 (47”)

• New inner casing & blade carriers

• HP rotor and diaphragms replaced

© ALSTOM 2014. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

Oconee - May 2014

Experience :FT. Calhoun – M6 HP and LP Retrofits

• GE 38” L-0 replaced with Alstom 48R L-0 (47”)

• New inner casing & blade carriers

• HP rotor and diaphragms replaced

LP Retrofit

HP Retrofit

© ALSTOM 2014. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

Oconee - May 2014

Experience :Quad Cities & Dresden – N1 LP Retrofit

LP Retrofit :

• Welded rotors with 48S L-0 (47”)

• Inner Casings and Blade carriers

GE 38” L-0

1987 replaced GE shrunk-on

disc rotors with ABB welded

rotors (with GE steam path)

© ALSTOM 2014. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

Oconee - May 2014

Experience :Peach Bottom 1 & 2 – N1 LP Retrofit

LP Retrofit :

• Welded rotors with 56R L-0 (57”)

• Inner Casings and Blade carriers

OEM GE

43” L-0

© ALSTOM 2014. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

Oconee - May 2014

Experience :DC Cook 1– N2R Alstom 2011 LP Retrofit

2011 LP Retrofit :

• Welded rotors with 56R L-0 (57”)

• Siemens inner Casings re-used

OEM – GE 43” L-0

2006 Siemens LP Retrofit :

•Shrunk on disc rotors with 18 m² L-0 (~56”)

•2008 L-0 blade failure

© ALSTOM 2014. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

Oconee - May 2014

ExperienceDiablo Canyon 1 & 2

LP Retrofit :

• Welded rotors with 56R L-0 (57”)

• Inner Casings and Blade carriers

• New LP rotors fully interchangeable

between positions

OEM Westinghouse

3 x BB81LPs with 43” L-0

© ALSTOM 2014. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

Oconee - May 2014

Experience :North Anna & Surry – BB281 & 81 LP Retrofit

LP Retrofit :

• Welded rotors with 57” L-0

• Inner Casings and Blade carriers

• New LP rotors fully

interchangeable between positions

and between N Anna and Surry

OEM Westinghouse

N Anna 3 x BB281LPs with 43” L-0

Surry 3 x BB81 LPs with 43” L-0

© ALSTOM 2014. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

Oconee - May 2014

Experience :North Anna & Surry – BB296 & 96 HP Retrofit

OEM Westinghouse

N Anna BB296

Surry BB96

Existing HP outer casings

required extensive repair of

erosion in exhaust area

HP Retrofit :

• Single flow HP module

• 1.25 Cr outer casing

• More efficient single flow expansion

• Steam path thrust balanced by

balance piston diameter

© ALSTOM 2014. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

Oconee - May 2014

Experience :Yongwang – BB296 HP Retrofit

Columbia Generating Station – July 10, 2012

OEM Westinghouse

BB296 HP

HP Retrofit :

• Rotor and diaphragms

© ALSTOM 2014. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

Oconee - May 2014

Alstom Nuclear Retrofit References

Plant

No

of

Units

Fuel Type Country

Rating (MW)

Speed (RPM) Turbine OEM

Retrofi

t Order Year

Retrofit Scope Retrofit Details

Ulchin 1 & 2 2 Nuclear S. Korea 950 1800 Alstom 2011 HP HP Retrofit

Maanshan 1 & 2 2 Nuclear Taiwan 952 1800 GE 2010 HP HP Retrofit

Koeberg 1 1 Nuclear S Africa 970 1500 Alstom 2009 LP LP Retrofit

Koeberg 2 1 Nuclear S Africa 970 1500 Alstom 2009 LP LP Retrofit

Fort Calhoun 1 1 Nuclear USA 476 1800 GE 2009 HP HP Retrofit

Peach Bottom 2 1 Nuclear USA 1182 1800 GE 2009 LP LP Inner block

Peach Bottom 3 1 Nuclear USA 1182 1800 GE 2009 LP LP Inner block

DC Cook 1 1 Nuclear USA 1152 1800 GE 2009 LP LP Inner block

Ulchin 1 & 2 2 Nuclear S. Korea 986 1800 Alstom 2008 LP LP Retrofit

San Onofre 2 & 32 Nuclear USA 1200 1800 English

Electric

2008 HP HP rotor, diaphragms +

installation

Quad Cities 1 1 Nuclear USA 1000 1800 GE 2008 LP LP Inner block

Dresden 2+3 2 Nuclear USA 1000 1800 GE 2008 LP LP Inner block

N Anna & Surry 4 Nuclear USA 800 1800 Westinghouse 2007 HP, LP HP + 2xLP inner modules per

unitNuclear Retrofit Solutions - KHNP - November 2012

© ALSTOM 2014. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

Oconee - May 2014

Experience :Installation Success

• Recent achievements:

• 18.5 days to 25 days for 3 LP inner casings and rotors on six BWR units

• 24 to 30 days for 2 LP inner casings and rotors with change to single flow HP turbine (extensive pipework modifications) on four PWR units

• Met contractual commitments

• Exceptional track record of meeting schedule

World’s Leading Nuclear Retrofit Supplier

© ALSTOM 2014. All rights reserved. Information contained in this document is indicative only. No representation or warranty is given or should be relied on that it is complete or correct or will apply to any particular project. This will depend on the technical and commercial circumstances. It is provided without liability and is subject to change without notice. Reproduction, use or disclosure to third parties, without express written authority, is strictly prohibited.

Oconee - May 2014

Conclusion

• Low Risk Retrofit Supplier

− Most experienced worldwide nuclear retrofit supplier across all designs

− Consistent and successful operation

• Reliable Operation for Life of Unit

−Welded rotor technology avoids SCC− Proven LSB design

• Optimal Performance

− High level of efficiency through design− Successfully demonstrated performance

World’s Leading Nuclear Retrofit Supplier

HP

LP

www.alstom.com