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News & Media

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

Tokamak Complex

A temporary roof for the bioshield

In August of last year, a circular platform—the "lid"—was installed deep inside of the ITER bioshield, effectively splitting the well-shaped work area into two. The 140-tonne steel structure was designed to protect the workers active in the basement levels while offering storage for the activities underway on the four above-ground levels.

It took three hours for the eight hydraulic jacks, positioned on platforms anchored to the bioshield wall, to pull the 140-tonne ''lid'' to the top of the massive concrete structure. (Click to view larger version...)
It took three hours for the eight hydraulic jacks, positioned on platforms anchored to the bioshield wall, to pull the 140-tonne ''lid'' to the top of the massive concrete structure.
Now, as teams are preparing for the pouring of the concrete crown and buttressing walls at the lowest level of the Tokamak assembly arena, it was time to hoist the lid some 20 metres to the very top.

The same technique that was used in September 2015 to lift the 800-tonne roof of the Assembly Hall was implemented last Friday 9 March to raise the structure centimetre by centimetre, carefully maintaining its perfectly horizontal position.

The ''lid'' will remain in its present position until April 2020 when it will be removed to allow components into the assembly pit. (Click to view larger version...)
The ''lid'' will remain in its present position until April 2020 when it will be removed to allow components into the assembly pit.
Eight hydraulic jacks—positioned on sturdy platforms distributed around the top of the bioshield—slowly pulled on cables that were attached to the lid in an operation lasting three hours.

The bioshield's new "roof" will remain in its present position until April 2020, when the lid will be removed in preparation for the first components to be delivered for installation by the overhead handling cranes.

Click here to read a related report on the European Domestic Agency website.


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