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

  • Diagnostics | Measuring the behaviour of fast ions in the plasma

    A diagnostic probe, called the "lost alpha monitor," is being carefully designed to measure the behaviour of escaping ions. The lost alpha monitor wil [...]

    Read more

  • Fusion fashion | A collision of worlds

    As Gabriela Hearst, the Creative Director of the fashion brand Chloé, is quick to tell you, she is very excited about hydrogen fusion. She had read about ITER a [...]

    Read more

  • Manufacturing | Cold valve boxes for the ITER cryopumps

    Eight sophisticated 'cold valve boxes' will regulate the forced flow of supercritical helium to the eight cryopumps of the ITER vacuum system. European contract [...]

    Read more

  • Fusion world | A helium campaign kicks off at JET

    After achieving record-breaking results on the Joint European Torus during 2021 experiments with the high-performance fuel mix of deuterium and tritium, EUROfus [...]

    Read more

  • Coil winding table | Seven years of faithful service

    In November 2015, workers from the European contractor Sea Alp Engineering, an Italian company based in Turin, began installing a large circular structure at th [...]

    Read more

Of Interest

See archived entries

Planning for Test Blankets Modules radwaste

Tritium can be produced through the impact of fusion-generated neutrons on lithium nuclides present in the plasma-facing components. Based on this principle, six experimental Test Blanket Modules will be installed at the equatorial ports of the ITER vacuum vessel wall. (Click to view larger version...)
Tritium can be produced through the impact of fusion-generated neutrons on lithium nuclides present in the plasma-facing components. Based on this principle, six experimental Test Blanket Modules will be installed at the equatorial ports of the ITER vacuum vessel wall.
Self-sustained tritium production is essential to the future of fusion. While an experimental machine such as ITER will draw upon the tritium presently available in the market (a couple dozen kilos), future fusion plants will have to breed their own tritium supply in a continuous manner.

Tritium, which occurs only in trace quantities in nature, can be produced through the impact of fusion-generated neutrons on lithium nuclides present in the plasma-facing components. Based on this principle, six experimental Test Blanket Modules (TBM) will be installed at the equatorial ports of the ITER vacuum vessel wall. Two of them will be procured by Europe; India, China, Japan and Korea will each contribute one. The Russian Federation and the Unites States will give support on specific technical items.

Over the years, as they are impacted by the neutron flux, the ITER TBMs will progressively become activated. "However different each TBM concept may be, we can reasonably anticipate the amount of radwaste that will be produced within the Tritium Breeding Systems (TBSs) and that we will have to manage," explains Magali Benchikhoune, the ITER Hot Cells & Radwaste Section leader and chair of the Test Blanket Program Working Group on TBS RadWaste Management (TBP-WG-RWM) that has been assigned to deal with this matter.

Following three and a half months of videoconference meetings, the international players of the TBP-WG-RWM met for two days—and for the first time in person—last week at ITER.

The group comprised the ITER Members' Test Blanket Module representatives; ITER Organization representatives for the TBM Program, radwaste management and safety; legal experts from all the contributing Members; and representatives from Agence Iter France (as the interface between ITER and the Host country, France).

Following three and a half months of videoconference meetings, the international players of the Test Blanket Program Working Group on TBS RadWaste Management met for two days—and for the first time in person—last week at ITER. (Click to view larger version...)
Following three and a half months of videoconference meetings, the international players of the Test Blanket Program Working Group on TBS RadWaste Management met for two days—and for the first time in person—last week at ITER.
Once the breeding experiments are completed, the activated TBMs will go back for further analysis to the ITER Member who procured them. The rest (and the largest part) of each system will go into interim storage and, eventually, to a permanent disposal facility managed by the French Nuclear Waste Management Agency ANDRA.

How to approach this issue? What are the realistic options to manage and transport the irradiated components? What are the cost drivers? What can be optimized? These questions were central to the meeting that summarized and developed the work accomplished since the Working Group kick-off meeting on 19 July. "Whether from ITER, Agence Iter France, CEA or the ITER Members," says Magali, "we all worked hard and the two-day meeting was a very motivating experience for all of us."

The progress of the work by this Working Group will be reported to the TBM Program Committee, which heads all TBM-related activities, during its meeting in early November.
- R.A.


return to the latest published articles