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Latest ITER Newsline

  • Deliveries | A third magnet ready for transport to ITER

    Three ITER magnets are now in transit to ITER from different points on the globe—two toroidal field magnets and one poloidal field coil. In terms of component w [...]

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  • Heaviest load yet | Europe's coil soon to hit the road

    It's big, it's heavy, it's precious and it's highly symbolic: the toroidal field coil that was unloaded at Marseille industrial harbour on 17 March is the most [...]

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  • Russia's ring coil | Entering the final sequence

    The smallest of ITER's poloidal field coils is entering the final sequence in a long series of activities that transform cable-in-conduit superconductor into a [...]

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  • Coping with COVID | Adjusting to maintain progress

    COVID-19 needs no introduction. But for a 35-country collaboration like ITER, the dramatic worldwide spread of the virus has introduced an entirely new set of c [...]

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  • United States | A roadmap to fusion energy

    Hundreds of scientists across the United States—representing a broad range of national labs, universities, and private ventures—have collaborated to produce A C [...]

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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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