NUCLEAR PRODUCT SOLUTIONS

ARABELLETM

sTEAM TURBiNE FOR NUCLeaR POweR PLaNT

POWERPOWER

The LaRgeST PORTFOLIO FOR

NUCLeaR POweR SOLUTIONS

geNeRaTORS

ARABELLETM sTEAM TuRBinEs

emeRgeNCy DIeSeL geNeRaTORS

aUTOmaTION aND CONTROL

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heaT exChaNgeRS

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25percent of the world‘s

power production capacity depends on

alstom technology

52,000 employees around the world in 70 countries

100years of industry leading expertise

With our recognised expertise all over the power generation market, we are able to find solutions to the challenges of today.

CLEAN POWER TODAY!®We recognise the need to improve the environ-mental balance of legacy plants while increas-ing adoption of new clean energy solutions.

PLANT INTEGRATOR™Our solutions maximise performance by optimising the complex interactions between sub-systems from design to operation.

LIFECYCLE MANAGEMENTAt all stages of the lifecycle we support owners to maximise their return on investment while minimising negative environmental effects.

Alstom is a global leader in power generation with a portfolio of products covering all fuel types. From fossil and biomass to nuclear and renewables, close to 25% of the world’s power production capacity depends on Alstom Power technology and services. Whether in design, manufacture, procurement or servicing, Alstom Power is setting the benchmark for innovative technologies that provide clean, efficient, flexible and integrated power solutions. Alstom can supply anything from single components to complete turnkey power plants. Our Plant integrator™ approach and power automation and control solutions ensure the optimisation of all elements to derive the maximum lifetime value from all our customer’s investments.

Alstom Power has more than 100 years of experience in engineering, procurement and construction (EPC) of new power plants. But our engineers are also experts in retrofitting, modernising and servicing existing plants. With operations in 70 countries, Alstom Power is close to customers all over the world, ensuring rapid responses and service excellence at all times.

welcome to Alstom Power

Alstom is the N°1 supplier of nuclear steam turbines. Today, 30% of all operating nuclear power plants in the world have an alstom steam turbine generator inside, and 40% of them use alstom-made equipment.

Alstom, market leader for nuclear power plantAlstom is the market leader for nuclear steam turbines and other key nuclear power conversion equipment. Alstom has demonstrated its skills and leadership as a nuclear power plant equipment manufacturer and integrator through an uninterrupted set of projects, both for new and retrofitted nuclear plants.

An advanced technologyAlstom’s nuclear power conversion solutions are based on its ARABELLE™ steam turbine technology platform. With its superior performance and exceptional reliability ARABELLE™ steam turbines can accommodate power outputs ranging from 900 MW to 1,900 MW. The largest turbines in operation worldwide for the past 10 years are ARABELLE™ steam turbines with a 1,550 MW power output provided with extremely high reliability (99.96%).

An integrated approach for more efficiencyAlstom has developed the other key equipment of a nuclear power plant conversion system in co-ordination with the ARABELLE™ family, you, as plant owner, can benefit from an integrated power conversion package. Alstom designs, manufactures, installs and maintains all the critical power conversion equipment of a nuclear turbine island: steam turbines and turbogenerators, moisture separator-reheaters, condensers and pumps, low and high pressure feedwater heaters, and more.

ARABELLE™ steam turbines Proven and cutting edge technology

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ARABELLE™ is not just a product. it is a family of cutting-edge products. Alstom’s integration capabilities are built on the solid foundation of a full in-house product range covering the key components of nuclear plant turbine islands. The focus is on the performance improvements that can be obtained from the ARABELLE™ steam turbine through optimal compatibility with the turbogenerator, the moisture separation reheaters and the condenser to get “more than just the sum of the key components” and ultimately optimise the power conversion from the nuclear reactor’s steam.

ARABELLE™ turbine-generator package:

Key benefits

MoRE MW • A compact, powerful, efficient and reliable turbine • 60% of the power comes from highly efficient single

flow expansion• A unique combined HP/IP module • Standard interface / footprint for 50 Hz & 60 Hz • Based on mature 1,550 MW units

AdAPTEd To ALL REACToR TyPEs• Fully adaptable steam path • From 900 MW to 1,900 MW, 50 Hz or 60 Hz • For any backpressure conditions• Co-generation applications

LP sizE oPTiMisEd foR ANy siTE CoNdiTioNs• Various last-stage blade sizes for each frequency

(50 Hz and 60 Hz) • A blade design that has demonstrated its reliability • Two, three or four LP modules for optimum vacuum fit

WELdEd RoToRs foR RELiABiLiTy ANd sECURE dELivERy• High resistance to stress corrosion cracking (SCC) • Excellent reliability, fewer inspections required • Smaller forgings easier to supply and inspect

dEsigNEd foR EAsE of MAiNTENANCE• Easy access for maintenance • Easy adjustment of LPs with independent structure • Compact arrangement with fewer bladed rows

get more than just the sum of the key components

with more than 300,000 operating hours accumulated and an outstanding reliability rate, ARABELLE™ is the most advanced steam turbine technology for your nuclear power plant.

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ARABELLE™ turbine-generator package:

Process equipment

alstom has extensive know-how in heat exchange across all types of power plants, including nuclear applications. alstom nuclear heat exchangers are adaptable to any reactor output level, delivering maximum performance and reliability, facilitating maintenance.

alstom tailor-made pumps offer an outstanding reliability, efficiency and cost-effectiveness. Our extended pumps portfolio of products for nuclear power plants includes among others: circulating water pumps, condensate extraction pumps, feed-water pumps.

GiGATOP 4-pole turbogenerators

With over 30 years’ development and more than 1.5 million hours of operation, Alstom has accumulated vast experience with very high rating 4-pole turbogenerators for nuclear power plants. The Alstom GiGATOP 4-pole turbogenerators complement the ARABELLE™ steam turbines with products ranging from 900 to 1,900 MW, enabling high output with almost 99% efficiency. Their design features have been judiciously combined to optimise reliability and facilitate maintenance.

get more than just the sum of the key components

An innovative architecturePrevious-generation nuclear turbines feature one double-flow high-pressure (HP) cylinder followed by four or six low-pressure (LP) flows (with two or three LPs, respectively) for final expansion to the condenser.

The ARABELLE™ turbine offers a new architecture where the steam first expands in a single-flow HP path; after moisture separation and reheat, it then expands in a single-flow interme-diate-pressure (iP) section before going through the four or six low pressure (LP) flows.

This unique ARABELLE™ architecture makes maintenance work much easier• it needs only four steam readmission valve sets instead of six.

This facilitates maintenance. in addition, the butterfly valves are installed at the level of the HP/IP cylinder, accessible from a platform above the MsRs, instead of hanging above the operating floor in front of each LP cylinder.

• The LP steam admission pipes are entirely below the turbine operating floor. This arrangement helps reduce maintenance duration and cost, because maintenance of the LPs does not require disassembly of their inlet pipes. Large lay-down areas are thus available alongside the LP cylinders, further facilitating maintenance.

MSR

HP IP LP 1 LP 2 LP 3

LP 1 LP 2 LP 3

MSR

Arabelle™Uniqueconfiguration

Formerconfiguration

MSR

MSR

HP 2F

MSR

HP IP LP 1 LP 2 LP 3

LP 1 LP 2 LP 3

MSR

Arabelle™Uniqueconfiguration

Formerconfiguration

MSR

MSR

HP 2F

Former configuration

ArabelleTM unique configuration

ARABELLE™a proven and reliable design

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LP-exhaust with independent structurein previous-generation turbines, the LP inner casing is supported by the LP outer casing, which in turn is supported by the turbine table. Distortions of the outer casing or load variations on the table induced by vacuum or condenser weight variations during operation will affect the relative centring of the rotating and fixed parts. This issue becomes more critical with the very large exhaust structures that characterise modern nuclear plants. The ARABELLE™ LP cylinders are designed with independent structures. The LP inner casing is connected at each end to an end-wall, which integrates the rotor bearing housings. The LP outer casing, which no longer acts as a support, simply becomes an envelope rigidly welded to the condenser, which is supported on the basement floor. This simple design improvement provides many advantages:

• The turbine load on the foundation is greatly reduced.

• The load on the turbine table is not affected by the vacuum variations nor by the forces transmitted by the condenser (through changing water levels).

• This independent structure also makes the relative centring of the moving and stationary parts easier, more precise and more stable. Very predictable vibration behaviour is the result.

Welded rotor technologyWelded rotor technology is a key Alstom steam turbine and gas turbine innovation, which has been continuously improved over the past 80 years to serve larger and larger units.

Compared to a shrunk-on disk design, welded rotors encounter reduced stress levels and provide better resistance to stress corrosion cracking (sCC).

Compared to monobloc rotors, welded rotors feature smaller forged cylinders (which are then welded together), meaning that sourcing and delivery are easier and more secure.

Discover what makes our ARABELLE™ unique…

a proven and reliable design

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Stag

e Ef

ficie

ncy

Blade Aspect Ratio

1 2 3 4

Blade Aspect Ratio= Height/Width

Low Tip Leakage lossesLow Endwall losses

Efficiency vs Blade Aspect Ratio

High Tip Leakage lossesHigh Endwall losses

Height

Width

Stag

e Ef

ficie

ncy

Blade Aspect Ratio

1 2 3 4

Blade Aspect Ratio= Height/Width

Low Tip Leakage lossesLow Endwall losses

Efficiency vs Blade Aspect Ratio

High Tip Leakage lossesHigh Endwall losses

Height

Width

Alstom has leveraged over 35 years of experience in nuclear power plants, and more than 100 years in steam turbine technology, to develop – and continuously improve – its efficient and reliable turbine blade family.

High-efficiency single-flow expansionThe most striking feature of the ARABELLE™ architecture is its single-flow steam expansion featuring blades with higher aspect ratio. This ensures higher efficiency due to the reduction of secondary losses at the root and the tip of the steam path. The result is greater turbine performance, with an overall efficiency gain of at least 1%. To reduce overall turbine length, the HP and IP expansion sections have been grouped into a combined HP/iP cylinder, similar to those used in fossil fired applications. The compact HP/IP module alone, with the same footprint for both 1,500 and 1,800 rpm applications, can produce up to 60% of the total power delivered by the turbine.

Efficient, reliable bladingAll ARABELLE™ turbine blades feature three-dimensional profiles to optimise their aerodynamic performance.

stationary stages feature a welded platform design for high reliability, especially for the HP stages, but that also yields better aerodynamic optimisation of the end-wall conditions, reducing the secondary losses. This robust design is perfectly adapted to the large volume flow found in today’s nuclear power plants.

All rotating blades, other than the Last stage Blade (LsB), are designed with integral shrouds to minimise losses. They are manufactured as single pieces, i.e. no loose parts, and assembled through a forked and pinned root fastening design: an extremely robust solution. The sealing ribs are machined after assembly for optimum performance, and a continuous blade shround connection ensures consistently good frequency control and reliability.

The LsB is optimised through detailed 3D modelling, validated in numerous laboratory tests and manufactured through high-precision forgings. An integral streamlined snubber for blade interconnection and continuous lashing greatly increases stage stability. it helps avoid vibrations, which such long blades with high-aspect ratios could otherwise undergo in service. A curved entry, fir-tree root fastening provides excellent transmission of effort to the disk, but also facilitates transportation and inspection.

Maximising your power plant with

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a unique design

A worldwide footprintThe Alstom Power nuclear business is headquartered in Levallois near Paris, (France). Engineering centres specialised in nuclear equipment are to be found in Levallois (France), Baden (Switzerland), Wuhan (China), Saint Petersburg, Joint-Venture AAEM (Russia), and Chattanooga (usA). Manufacturing location dedicated to nuclear power technology are in Portugal, Poland, Russia, China, usA and Mexico, as well, as in France. Together with the support of local service centres in 70 countries, Alstom Power can deliver rapid nuclear services across the globe.

Large steam turbines

Chattanooga, USa

elblag, Poland

wroclaw, Poland

Bexbach, germany

Setubal, Portugal

Delhi, India

St. Petersbourg, Joint-venture aaem Russia Podolsk, Russia

Beijing, China

wuhan, China

morelia, mexico

Levallois, France

Belfort, France

Baden, Switzerland

Birr, Switzerland

Nantes, France

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in action in nuclear power plantsa unique design

Alstom‘s worldwide experienceAlstom has been at the forefront of designing and installing nuclear turbine islands for the past 30 years, with all kinds of nuclear reactors. Our longstanding expertise is unrivalled.

LIng Ao PHASE II, ChinA

2 x 1,080 MW turbine generator packageLing ao 3+4 turbine generator packages for 2,160 mw turbine islands were ordered in 2005. Featuring aRaBeLLe™ technology, the units started successfully in 2010 for the unit 3 and 2011 for the unit 4, ahead of the schedule and theirs measured power outpots are higher than the guaranteed level. For this project, a significant transfer of technology and manufacturing sharing with our long term partner DeCL has been implemented. Leveraging on this solution, several similar projects are under construction in china, such as hongyanhe, Ningde, or Fangjiashan, among others.

FLAMAnVILLE 3, FrAnCe1,750 MW nuclear turbine islandFlamanville 1+2 started commercial operation in 1985 with two 1,350 mw units. The reactors are of the four-loop areva “P4” type. Under a number of separate contracts, alstom designed, delivered and erected the turbogenerators, plus the bulk of the turbine island mechanical and electrical auxiliaries, including condensers, feedwater reheaters, and condensate extraction and circulating water pumps. a power plant extension is now under construction. It will include one aRaBeLLe™ steam turbine (unit 3), delivering 1,750 mw from the new ePR (evolutionary Pressurized Reactor) from areva. when commissioned this will be the highest power output in the world from a single turbinegenerator set. alstom has designed, delivered and erected the complete turbine island, including the condensate extraction pumps, circulating water pumps and emergency diesel generator sets.

BALTiC, russiA

2 x 1,200 MW nuclear turbine islandsThe alstom-atomenergomash (aaem) Joint-venture was selected by Rosatom, the Russian federal nuclear agency, to deliver the turbine islands of the Baltic nuclear power plant to be con-structed in Kaliningrad, Russia.This is the first major contract won by the Joint-venture created in 2007 by alstom with atomenergomash to supply the turbine islands to Russian nuclear power plants.The plant will be based on the Russian vveR 1200 pressurised water reactor design. aaem’s scope includes the supply of both units’ turbine hall, including the alstom aRaBeLLe™ steam turbines, generators and their associated auxiliaries, the moisture separator reheaters (mSR), the condenser and feed-water heating plant equipment.

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Alstom contributes to the protection of the environment.This brochure is printed on environmentally-friendly paper.

Alstom ( France )3 avenue André Malraux92309 Levallois Perret CedexTel: +33 1 41 49 20 00

www.alstom.com