Subscribe options

Select your newsletters:


Please enter your email address:

@

News & Media

Latest ITER Newsline

  • Thermal shield | First 23 panels fit like clockwork

    During fitting trials in Korea, 23 stainless steel panels have been successfully pre-assembled into the first sector of vacuum vessel thermal shield. In a major [...]

    Read more

  • Promising research | Taming "ill-behaving" fusion plasmas

    Certain types of magnetic distortions have proved beneficial in suppressing ELM-type instabilities at the edge of fusion plasmas—periodic bursts of energy that [...]

    Read more

  • Divertor rails | A chicken and egg situation

    In the ideal world of 3D drawings, a component's dimensions are by definition nominal and parts fit together like cogs and gears in a pricey wristwatch. The rea [...]

    Read more

  • Transformers | The switch can now be flipped

    For close to four weeks they tested all the signals, confronting the figures that appeared on their screens to in-field observations and measurements. Transmitt [...]

    Read more

  • ITER at IAEA Conference | The spirit of "Atoms for peace"

    The General Conference of the International Atomic Energy Agency is among the largest and most diverse annual gatherings—more than 2500 participants from 153 co [...]

    Read more

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.


return to the latest published articles