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Latest ITER Newsline

  • Central solenoid assembly | First sequences underway

    What does it take to assemble the magnet at the heart of ITER? Heavy lifting, unerring accuracy, and a human touch. The central solenoid will be assembled from [...]

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  • Assembly | The eyes of ITER

    Supervisors ensure compliance and completion as machine and plant assembly forges ahead. In Greek mythology, Argus was considered an ideal guardian because his [...]

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  • Component repairs | Removing, displacing and disassembling

    A good repair job starts with a cleared workbench, the right tools on hand and a strong vise. This axiom, true for odd jobs in a home workshop, is also true for [...]

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  • Assembly | Set of handling tools for in-vessel installation finalized

    Inside of a test facility that reproduces the volume and geometry of the ITER vacuum vessel environment, a team from CNIM Systèmes Industriels has dem [...]

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  • 360° image of the week | The assembly theatre

    Ever since it was invented almost two centuries ago, photography has tried to capture what the human eye actually sees. Despite huge progress achieved, it has n [...]

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Of Interest

See archived entries

Lip Seal Project delivers first hardware

The Lip Seal Project team: Timmo Määta, Kalervo Leino, Esa Leskelä, Robin Le Barbier, Bruno Levesy and Jean-Pierre Martins. (Click to view larger version...)
The Lip Seal Project team: Timmo Määta, Kalervo Leino, Esa Leskelä, Robin Le Barbier, Bruno Levesy and Jean-Pierre Martins.
The ITER vacuum vessel will have 18 upper, 17 equatorial and 9 lower ports to allow access to the plasma for diagnostic, heating, pumping systems and maintenance. Welded "lips" made out of 2 mm thick stainless steel will seal the port plugs and confine the ultra-high vacuum inside the vessel.

An illustration showing the tig-welding of the lip seal... (Click to view larger version...)
An illustration showing the tig-welding of the lip seal...
In order to develop the appropriate cutting and welding techniques for the lip, the ITER Organization launched an R&D project together with the Finnish company VTT called the "Lip Seal Project." This week, the first two mockups arrived at the ITER site. They were manufactured at the VTT facility using a robotic arm especially adapted to the port's high-vacuum and nuclear environment.

...and the laser-welding technique. (Click to view larger version...)
...and the laser-welding technique.
The laser welded mockup successfully passed the tests for qualification and leak tightness, which was a big milestone for Bruno Levesy, the responsible engineer, and the team from VTT.

Click here to watch the movie on the Lip Seal welding technology produced by VTT.


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