Subscribe options

Select your newsletters:

Please enter your email address:

@

Your email address will only be used for the purpose of sending you the ITER Organization publication(s) that you have requested. ITER Organization will not transfer your email address or other personal data to any other party or use it for commercial purposes.

If you change your mind, you can easily unsubscribe by clicking the unsubscribe option at the bottom of an email you've received from ITER Organization.

For more information, see our Privacy policy.

News & Media

Latest ITER Newsline

  • Vacuum components | Shake, rattle, and... qualify!

    A public-private testing partnership certified that ITER's vacuum components can withstand major seismic events. Making sure the ITER tokamak will be safe in th [...]

    Read more

  • Feeders | Delivering the essentials

    Like a circle of giant syringes all pointing inward, the feeders transport and deliver the essentials to the 10,000-tonne ITER magnet system—that is, electrical [...]

    Read more

  • Image of the week | It's FAB season

    It's FAB season at ITER. Like every year since 2008, the Financial Audit Board (FAB) will proceed with a meticulous audit of the project's finances, siftin [...]

    Read more

  • Disruption mitigation | Final design review is a major step forward

    The generations of physicists, engineers, technicians and other specialists who have worked in nuclear fusion share a common goal, dedication and responsibility [...]

    Read more

  • Image of the week | Like grasping a bowl of cereal

    Contrary to the vast majority of ITER machine components, the modules that form the central solenoid cannot be lifted by way of hooks and attachments. The 110-t [...]

    Read more

Of Interest

See archived entries

ITER NEWSLINE -

Blanket first wall

Qualification program concludes in Europe

Directly facing the heat and high-energy neutrons produced during fusion is the first wall of the ITER blanket—440 beryllium-coated, detachable panels that will be installed on the inboard and outboard surfaces of the vacuum vessel over a surface of 610 m². The European agency for ITER, Fusion for Energy, has reached the end of its industrial qualification program for the panels that are under its responsibility.

A first wall panel full-scale prototype manufactured by Framatome, one of three companies under contract with the European Domestic Agency, Fusion for Energy, for the final phase of the qualification program. (Click to view larger version...)
A first wall panel full-scale prototype manufactured by Framatome, one of three companies under contract with the European Domestic Agency, Fusion for Energy, for the final phase of the qualification program.
The ITER blanket system provides the physical boundary for the plasma and contributes to the thermal and nuclear shielding of the vacuum vessel and the external machine components such as the superconducting magnets operating in the range of 4 Kelvin (-269 °C). Directly facing the ultra-hot plasma and having to cope with large electromagnetic forces, while interacting with major systems and other components, the blanket is among the most critical and technically challenging components in ITER.

Each of the 440 plasma-facing first wall panels of the ITER blanket measures 1 x 1.5 metres (height x length), and is coated with a 6- to 10-millimetre layer of beryllium armour tiles bonded to a copper alloy heat sink mounted on a stainless steel structure.

Half of the panels are under the procurement responsibility of the European Domestic Agency, Fusion for Energy: 215 normal heat flux first wall panels designed for heat fluxes of up to 2 MW/m². (China and Russia are sharing the procurement of 225 enhanced heat flux panels designed for 4.7 MW/m².) For all parties, first wall design, development and qualification is progressing in phases, including the manufacture and testing of small-scale mockups, followed by semi-prototypes, and finally full-scale prototypes that open the way to series production.

In Europe, the last phase of the industrial qualification program is drawing to a close. Contracts awarded for three full-scale prototypes have been executed and quality tests are underway on the results. The choice of awarding the contracts for full-scale prototypes to three companies—Atmostat, Framatome and the consortium Iberdrola/Woods/Leading—was made by the European Domestic Agency to mitigate risk on these technically challenging components and preserve competition up to series production. The next step for the European agency is the call-for-tender for the production of the first wall panels.

"The manufacturing completion of these three full-scale "normal heat flux" first wall prototypes by the suppliers of the European Domestic Agency is the culmination of many years of effort with strong Domestic Agency/ITER Organization collaboration; it represents a major milestone in our first wall procurement activities," comments René Raffray, leader of the ITER Blanket Section. "Congratulations to our colleagues from Fusion for Energy and their suppliers involved in this successful endeavour."

Qualification programs are also advancing in Russia and China, where full-scale prototype programs for the enhanced heat flux panels will be launched in 2020.

See the full story, with photos, on the Fusion for Energy website.

return to the latest published articles