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News & Media

Latest ITER Newsline

  • Vacuum vessel repair | A portfolio

    Whether standing vertically in the Assembly Hall or lying horizontally in the former Cryostat Workshop now assigned to component repair operations, the non-conf [...]

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  • European Physical Society | ITER presents its new plans

    The new ITER baseline and its associated research plan were presented last week at the 50th annual conference of the European Physical Society Plasma Physics Di [...]

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  • Image of the week | The platform's quasi-final appearance

    Since preparation work began in 2007 on the stretch of land that was to host the 42-hectare ITER platform, regular photographic surveys have been organized to d [...]

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  • Cryopumps | Preparing for the cold tests

    Before being delivered to ITER, the torus and cryostat cryopumps are submitted to a  comprehensive series of factory acceptance tests. This is not sufficie [...]

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  • Fusion technologies | Closing a fusion schism

    Historically, inertial confinement and magnetic confinement approaches to fusion have been parallel, separate processes. The ITER Private Sector Fusion Workshop [...]

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Of Interest

See archived entries

Cryoplant

A vertical displacement event

Three vertical storage tanks have been installed since last week outside of the cryoplant. The operation requires two powerful cranes working in tandem but also the strength of many arms ...

Installed vertically because of space constraints, six identical tanks will store 380 cubic metres of gaseous helium each at a pressure of 22 bars. (Click to view larger version...)
Installed vertically because of space constraints, six identical tanks will store 380 cubic metres of gaseous helium each at a pressure of 22 bars.
There are 36 semicircular openings at the base of each tank, corresponding to 36 steel rods deeply anchored into the 2.5-metre thick concrete platforms that have been built to receive them. Each tank stands 20 metres high and weighs 150 tonnes.

As the crawler crane seize a tank by its "ears" (two cylindrical protrusions called "trunnions" located at the upper end of the component), and as the telescopic crane slowly lifts its lower end, one wonders how the required alignment will be achieved.

One hour later, the question can be answered. The crawler crane positions the tank vertically and leaves it hovering a few centimetres above the rods. Three men weigh in with all their strength on the bottom rim: a few pushes to the right, a few pulls to the left, a tilt inward and a small rotational movement and everything falls into alignment. The crane operator can then carefully lower the tank so that all 36 rods slide into their corresponding holes, ready to be bolted.

Last Wednesday's operation was a spectacular first. By the end of the week it was routine and as of today's Newsline, three tanks are in place.

Installed vertically because of space constraints, the six tanks, procured by Europe, will each store 380 cubic metres of gaseous helium at a pressure of 22 bars. They will act as buffers for certain phases of operations and also as storage when ITER is not running.

Read a full report on the European Domestic Agency website.


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