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News & Media

Latest ITER Newsline

  • Summer postcards from the ITER worksite

    The latest harvest of ITER construction photos may be taken from the same point—the tallest crane on site—but there is always an abundance of new detail to be g [...]

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  • The ring fortress

    ITER'ssteel-and-concretebioshield has become the definingfeature of Tokamak Complex construction. Twolevels only remain to be poured (out of six). It is a 'rin [...]

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  • The wave factory

    A year ago, work was just beginning on the steel reinforcement for the building's foundation slab. The Radio Frequency Heating Building is now nearing the last [...]

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  • It's all happening inside

    Since the giant poster was added to the Assembly Hall's completed exterior in June 2016 the building has lookedfrom afar like a finished project. Butinside, tea [...]

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  • Along skid row

    They look like perfectly aligned emergency housing units. But of course they're not: the 18 concrete structures in the ITER cryoplant are massive pads that will [...]

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Of Interest

See archived articles

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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