Heavy nuclear componentsChalon/St-Marcel Plant

AREVA EPR reactor is based on the most advanced Generation III+ PWR technology currently available.AREVA has used its experience to develop a reactor design that offers enhanced safety and competitiveness: extreme robustness against external hazards, specific compartment to isolate the core in the event of a

core meltdown accident, quadruple redundant safeguard system, control room HMI providing real-time data.

The EPR reactor

DiD you know? Nuclear safety refers to the measures implemented during the design, operating and decommissioning phases of nuclear power plants to prevent the dispersal of radioactive substances and thereby protect human health and the environment.

2 3

124

Core products in line with the AREVA Groups integrated strategy

AREVA manufactures key nuclear reactor components

AREVA is involved in all activities specific to the nuclear sector, particularly the design and construction of nuclear power plants. The Chalon/St-Marcel plant manufactures heavy primary system components (reactor vessels, steam generators and pressurizers). The plants expertise in cutting-edge nuclear technology ensures that these components are manufactured in compliance with two major requirements: optimal reliability required by clients and nuclear safety authorities, and energy performance required by utilities.

The Chalon/St-Marcel plant is part of a network of AREVA industrial sites devoted to the design and manufacture of heavy and mobile components of the reactor coolant system.

Expertise in cutting-edge nuclear technology

AREVA integrated offer (reactor coolant system)

Reactor core and primary coolant system

1 Reactor pressure vessel (RPV) and internals: Heavy-wall steel vessel containing the reactor core: fuel assemblies.

2 Steam generators (SG): Used to transfer heat from the primary cooling system to the secondary cooling system, thus converting it into steam that drives a turbine coupled to a generator. 3 Reactor coolant pumps (RCP): Used to ensure nuclear safety by allowing the primary coolant system water to circulate through the reactor core and steam generators.4 Pressurizer: Used to maintain the primary cooling system in liquid phase by applying a pressure of 155 bar.5 Reactor coolant piping: Used to transfer primary cooling system from the reactor vessel to the steam generators.6 Control rod drive mechanisms (CRDM): Used to control the nuclear reaction inside the reactor vessel and stop it within 2 seconds, thereby ensuring nuclear safety.

Manufacturing of heavy and mobile nuclear components: Industrial footprint

Heavy components Forged and cast components Mobile components Maintenance operations

PROJET AREVA NEWPORT NEWS Newport News, VA

USINE DE ChAloN/St-MARCEl St-Marcel

CREUSOT FORGECREUSOT MCANIQUE Le Creusot

JSPM Jeumont

SOMANUMaubeuge

CENTRE DESSAI JSPMMaubeuge

AREVA DONGFANG (ADJV) Deyang

Over 50 years of experience in the nuclear industry

1958 Creation of Framatome

1964 Delivery of the reactor pressure vessel for the first PWR unit at the Chooz A NPP (Creusot-Loire)

1972 Construction of steam generator manufacturing facility (CETIC) at Chalon

1973 Construction of reactor vessel manufacturing facility at Creusot

1975 Construction of heavy nuclear component manufacturing facility at St-Marcel

1986 Centralization of heavy component workshop at Chalon/St-Marcel

2001 Creation of the AREVA Group

2005 - 2009 Extension of heavy nuclear component manufacturing facility (investment amounting

to over 50 million euros)

2009 Delivery of heavy components for the first EPR reactor at Olkiluoto (Finland)

Design and engineering

Manufacturing of forged and cast components

Services

Experience feedback

Manufacturing ofmobile components

heavy component assembly

Nuclear power plantOn-site installation

Aerial view of the Chalon/St-Marcel plant

4 5

Our markets

n EPR: Safer and more competitive

The EPR reactor is a 1600+ MWe-class pressurized water reactor (PWR). It is based on the most advanced Generation III+ PWR technology currently available, offering enhanced safety, significantly reduced production costs and optimal use of nuclear fuel.

n AtMEA1: Advanced Generation III+ PWR

The ATMEA1 reactor is a medium-power PWR (1100 MWe) currently developed by ATMEA, a joint venture between AREVA and Mitsubishi Heavy Industries (MHI).It addresses the need for a medium-sized PWR offering Generation III+ safety features and optimal cost-effectiveness.

n KERENA: Innovative BWR

The KERENA reactor is a Generation III+ boiling water reactor (BWR) with a power output of approximately 1250 MWe, developed at the request of German utilities in cooperation with other European countries. It incorporates mostly passive safety systems while maintaining a number of active safety systems, thus providing a high level of safety and significant flexibility for operators.

our reactor designs

FinlandEPR Olkiluoto

USA22 reactors

Brazil1 reactor

Sweden2 reactors

South Corea 2 reactors

United Kingdom1 reactor

Belgium5 reactors

Switzerland2 reactors

France58 reactors+ EPR Flamanville

South Africa2 reactors

China6 reactors+ 2 EPR Taishan

Construction in progress

our objectives

n Anticipating and meeting requirements defined by different nuclear safety authorities

n Becoming the reference supplier of new NPP equipment:

Steam generators Pressurizers Reactor vessels Reactor vessel heads and internals Equipment support components

n Offering our clients the best replacement component technology currently available:

Steam generators Pressurizers

Reactor vessel heads

Our components are installed in more than 100 nuclear reactors in 11 different countries

The nuclear equipment market is composed of two segments: new NPP components and replacement components. Reactor vessel, pressurizer and steam generator replacement operations are carried out within the scope of programs to improve the safety and energy performance of nuclear facilities throughout the world.

Installation of a steam generator inside the reactor building of the Olkiluoto 3 nuclear power plant (Finland)6 7

Plant operators reading work instructions

Steam generator channel head

Calculations engineer viewing a model of a steam generator channel head

a Manufacturing drawing

b CAD model c Finite element meshing

d View of loads exerted on the component

DiD you know?

Analysis results are given in stress analysis reports (approximately 5000 pages).these reports provide a detailed description of each component and are subject to validation by the client and nuclear safety authority.they are kept by the utilities and updated after eachten-year inspection.

Technical expertise for customer satisfaction

Based on the clients specifications, our engineering teams define the design specifications for the components to be manufactured (i.e. reactor vessels, vessel heads, vessel internals, steam generators and pressurizers).

The Chalon/St-Marcel plants industrial methods department adapts the engineering data to ensure compliance with production and quality control requirements. This department also prepares work instructions and manufacturing drawings.

In-plant manufacturing, inspection and testing operations are performed by highly qualified operators under the supervision of metallurgical or Non-Destructive-Examination (NDE) experts.

The structural design and calculations department prepares stress analysis reports as assembly work progresses.

Based on manufacturing drawings a , experts from the structural design

and calculations department develop a CAD model b used to generate a finite element mesh c of the component to be manufactured.

They also calculate the loads exerted onto the components under normal or emergency operating conditions d .

The results obtained are then classified and compared with the applicable construction code (RCC-M or ASME) to demonstrate component compliance.

Calculations department

8 9

Manufacturing processes

140 Total length of EPR steam generator tubes if placed end to end

Use of over 80 different welding techniques

Fully automated welding jigs and gantries

Weld thicknesses of up to 250 mm

Stainless steel or Inconel cladding with a thickness of 7 to 10 mm for corrosion prevention

Welding

Above-standard machining toolsDrilling accuracy of .01 mm for components weighing several tens of tons.

Assembling steam generator internalsLaser technology is used to align tube support plates over 3 meters in diameter with .1 mm accuracy.

Laser-guided positioning of steam generator tube support plates

Insertion of U-tubes into a steam generator

Two-wire welding gantry

Numerical vertical lathe

DiD you know?

tubing is a key step in the steam generator manufacturing cycle. this long and demanding process ensures the safety and service life of the steam generator. In the EPR reactor, a total of 5980 Inconel tubes are inserted through the tube support plates and welded to the tubesheet. this work takes approximately 3 months to complete. tubing operations are performed in clean overpressurized rooms with regulated and controlled access.

10 11

Safety begins with employees commitment

Our personnel are constantly striving to achieve excellence in all aspects of nuclear safety, product quality control, industrial performance, occupational safety and environmental protection.

Work-specific personal protective equipment

Qualification training, internships and apprenticeships

Skill development is achieved through continuous training. The Chalon/St-Marcel plant offers qualification training, internship and apprenticeship programs for young workers.

Employee skill management: A competitive advantageAn occupational analysis system is used to track demographic, technological and strategic changes within the AREVA Group. Human resource recruitment, professionalization and skill management strategies are adapted accordingly.

Our priority: Occupational health and safetyEnsuring the health and safety of all Group employees and subcontractors is an absolute priority. Risk reduction is achieved through the continuous implementation of a strict and effective safety management system (visual safety management, safety inspections, risk assessments, training programs, etc.).

The French Association for Industry Professionals provides welding training programs for young workers. The Chalon/St-Marcel plant has set up a welding training center for this purpose. Under professional supervision, trainees receive on-site training on industrial welding machines using noble filler materials (e.g. stainless steel and Inconel) specific to nuclear-grade manufacturing processes.

Our objective: Zero occupational accidents

Welding training center

Factory alignment of steam generators12 13

Nuclear safety and quality assurance

Inspections are performed throughout the manufacturing process (direct inspection of components or laboratory analysis of test specimens). Each manufactured component (steam generator, reactor vessel, pressurizer) is delivered with a certificate of compliance with client specifications.

Certifications and qualifications

An integrated product quality, occupational health and safety and environmental monitoring system is implemented to ensure product compliance with applicable codes and standards.

n ASME Pressure Vessel Code Pressure vessel design and construction rules defined by the American Society of Mechanical Engineers.

n ASME N Certification Certificate authorizing the design and manufacture of pressure vessel components as per ASME code requirements.

n ASME NPt Certification Certificate authorizing the manufacture of pressure vessel components as per ASME code requirements.

n ISo 9001 (Quality Management)

n ISo 14001 (Environmental Management)

n ohSAS 18001 (Safety Management)

n RCC-M Design and construction rules for mechanical components of nuclear installations, defined by the French Association for NPP component design and construction rules (AFCEN).

n French regulations concerning pressurized water reactors Compliance with these regulations is ensured by the Nuclear Safety Authority, represented by the Pressurized Nuclear Equipment Directorate (DEP).

External monitoringManufacturing operations are overseen by the nuclear safety authority as well as by the client. As the operator, the client is responsible for ensuring nuclear reactor safety throughout the manufacturing process, starting with steel-making operations. This is achieved through audits, document reviews and on-site inspections.

The client provides on-site assistance during manufacturing or inspection processes and verifies their compliance with safety requirements for heavy nuclear components.

Certifications meeting the requirements of nuclear safety authorities throughout the world

Quality controlOur quality control methods are based on exhaustive techniques independent of production processes: Non-Destructive Examination (NDE): ultrasonic testing,

eddy current testing, magnetic particle testing, liquid penetrant testing, radiographic testing, laser telemetry, etc.

Mechanical testing: hardness testing, drop weight testing, impact testing, bend testing, etc.

1 h of inspection every

3 h of manufacture

Helium leak testing of the tube-to-tubesheet welds

Lower part of a steam generator in the radiographic enclosure

Final dimensional inspection of an EPR steam generator via digital photogrammetry

Ultrasonic weld testing

Employee undergoing COFREND certification

Dimensional inspection of tube support plates

our priority: Compliance with nuclear safety authority requirements

DiD you know?

Nuclear regulations limit the validity of welder qualification certificates to 2 years. In order to maintain his certification, a welder must have completed at least two compliant welds (i.e. that have successfully undergone radiographic and ultrasonic testing) over the past six months.

14 15

Heavy components of the nucle ar steam supply system

82 ft

44 ft

EPR pressurizer EPR reactor vessel EPR steam generator

525 metric tons

Weight of an EPR steam generator

Reactor vessels, stea m generators and pressurizers are heavy and comp lex components requiring highly accurate machining operations ( 0.4 mils) on forgings weighing tens or hun dreds of tons.

EPR primary coolant loop

16 17

Four EPR reactors currently under construction

Solutions for power generation with less carbon

Flamanville (France)

olkiluoto(Finland)

taishan 1 (China)

taishan 2(China)

18

AREVA Chalon/Saint-MarcelB.P. 40 001 Saint-Marcel - 71 328 Chalon-sur-Sane Cedex

Energy is our future, dont waste it!

May

201

2 - D

esig

n an

d pr

oduc

tion:

-

Pho

to c

redi

ts:

AR

EVA

- Tr

acy

FAV

EY

RIA

L - E

lodi

e FE

RR

AR

E -

Ren

Q

UAT

RA

IN -

Cha

rlne

MO

RE

AU

AREVA supplies solutions for power generation with less carbon. Its expertise and unwavering insistence on safety, security, transparency and ethics are setting the standard, and its responsible development is anchored in a process of continuous improvement.

Ranked first in the global nuclear power industry, AREVAs unique integrated offering to utilities covers every stage of the fuel cycle, nuclear reactor design and construction, and related services. The group is also expanding its operations to renewable energies wind, solar, bioenergies, hydrogen and storage to be one of the leaders in this sector worldwide.

With these two major offers, AREVAs 48,000 employees are helping to supply ever safer, cleaner

and more economical energy to the greatest number of people.

www.areva.com