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Flamanville 3 - France

Construction site of Flamanville 3

Flamanville 3 is the first Generation III+ plant in the new French reactor fleet and the 100th reactor order placed with AREVA worldwide. French authorities and utilities launched their nuclear renaissance program keeping in mind 2020, when the country’s original fleet of nuclear power plants will start to enter the decommissioning phase.

  • The contract

    The contract

    Customer: Électricité de France (EDF).

    Supplier: AREVA.

    Supply scope: 1 EPR™ unit Nuclear Steam Supply System (NSSS).

    Net electric output: 1,630 MWe.

    Reactor thermal output: 4,300 MWth.

    Electric power generation: 13 TWh.

    Signature date:
    April 17, 2007.

  • The customer

    The customer

    The EDF group is an integrated energy company operating in all branches of the industry: generation, transmission, distribution, and the trading and sale of energy. The Group is the largest electricity producer in Europe.

    In France
    , it has predominantly nuclear and hydroelectric power plants supplying electricity that is 95% CO2-free. In total, EDF generated more than 470.2 TWh in 2010 in France.

    Since the nineteen-seventies, EDF has designed, built and operated 58 pressurized water reactors (PWR) totaling 63.1 GW in installed capacity and spread across 19 sites throughout France (thirty-four 900 megawatt reactors; twenty 1,300 megawatt reactors; four 1,500-megawatt reactors) and accounting for more than 85% of the electricity generated by EDF.
    All 58 reactors, built by AREVA, were commissioned over the period spanning 1977 to 1999.

  • Supply scope

    Scope of Supply


    Nuclear Steam Supply System (NSSS)

    • Design and procurement.
    • Erection and commissioning.
    • Digital control system:
      • Safety Instrumentation and Control (I&C) and electrical system, engineering, and manufacturing,
      • Operating instrumentation and control for the nuclear steam supply system, engineering and manufacturing,
      • Simulator for the safety instrumentation and control system and for the main instrumentation and control system.


    • Overall project management
    • The licensing process with the French Nuclear Safety Authority (ASN)


    • Civil work


    • Turbine Island (TI)

  • Supply chain

    AREVA Supply chain


    Flamanville 3 projects requires a globally qualified industrial supply chain and pool of subcontractors: around 100 suppliers will be working for AREVA on the project.

    Manufacturing responsibilities are as follows:

    Work on key equipment

    Primary cooling system equipment

    • Steam generator and pressurizer: AREVA Châlon/Saint Marcel (France).
    • Reactor coolant lines: AREVA Creusot Forge (France). 
    • Reactor coolant pumps: AREVA Jeumont Solutions for Pumps and Mechanisms (JSPM), France. 
    • Control rod drive mechanisms: AREVA JSPM, (France). 
    • Reactor pressure vessel: Forging at Japan Steel Works (JSW) in Muroran, Japan, and Manufacturing at AREVA Chalon Saint Marcel, France.

    Human resources deployed

    • Project control: nearly 540 AREVA engineers at the peak of construction.
    • Employees for power plant construction: 2,500 people at the peak of construction, including 400 AREVA employees and suppliers.

  • Licensing

    Licensing process

    Flamanvielle 3 is proceeding through a rigorous two-step French licensing process. This licensing process is being conducted in parallel with project execution under the client’s responsibility, interfacing with the French regulatory body ASN.

    The French government granted the construction license for Flamanville 3 on April 11, 2007, on the basis of a comprehensive analysis of the EPR™ design.
    The Preliminary Safety Analysis Report (PSAR) was presented in 2004 and the final submittal is planed for October 2010.

    A continuous production of project documents for surveillance and approval by safety authorities in the areas of design engineering, manufacturing, construction, commissioning is being conducted throughout the implementation of the project.
    Provisional Final Safety Analysis Report will then be approved, which authorizes the fuel loading and further start-up activities.

  • Key milestones

    Key milestones


    • September 2005: design contract for NSSS awarded to AREVA.
    • October 2005: start of public debate.
    • February 2006: end of public debate.
    • May 2006: anticipated procurement contract signed (mostly forgings).
    • April 2007: construction permit was granted by French authorities.
    • December 2007: start of construction, first concrete pouring by EDF.
    • May 2008: start of liner preparation.
    • June 2008: erection of first turbine hall support column. 

    Delivery of the first auxiliary equipment and AREVA civil engineering equipment

    • December 2007: Safety Injection System / Severe Accident Containment Spray System lines.
    • January 2008: primary anchors (1st batch).
    • March 2008: embedded excore tubes.
    • October 2008: installation of safeguard system piping.
    • 2009 and 2010: delivery of the first auxiliary equipment (tanks, pumps and valves) and of the instrumentation and control system; welding of the first equipment supports.
    • March to June 2011: installation of the heat exchangers and safety injection system accumulators (RIS).
    • August 2011: hydraulic testing of the primary and secondary cooling systems of the first steam generator.
    • April 2012: installation of the safety boration system (RBS) and of the first related piping.
    • June 2012: installation of the vessel support ring.
    • August 2012: start of installation and connection of operational I&C cabinets.
    • July 2013: dome installation
    • In 2016: start of commercial operation planned by EDF.