Subscribe options

Select your newsletters:


Please enter your email address:

@

News & Media

Latest ITER Newsline

  • Making remote handling less remote

    Over a wet and windy three-day period on the ITER site in November, around 90 representatives of the ITER Organization, the Domestic Agencies of Europe and Japa [...]

    Read more

  • The framework for sharing ITER intellectual property

    In signing the ITER Agreement in 2006, the seven ITER Members were agreeing not only to share in the costs of constructing and operating the ITER facility, but [...]

    Read more

  • Wendelstein achieves ultra-precise magnetic topology

    A recent article in the online journal Nature Communications confirms that the complex topology of the magnetic field of Wendelstein 7-X—the world's largest ste [...]

    Read more

  • The Matrix, rigid and fluid

    A fast-growing array of structures and buildings has been emerging across the ITER worksite platform under the control and supervision of the European Domestic [...]

    Read more

  • By road, river and sea

    They travelled by road from the Air Liquide factory near Grenoble, sailed down the Rhône River from Lyon and entered the Mediterranean to the east of Fos-sur-Me [...]

    Read more

Of Interest

See archived articles

Ballet in the sky

-Robert Arnoux

The spectacular aerial ballet will continue in the coming weeks as 12 identical pylons are erected and assembled along the six kilometres that separate the ITER platform from the 400 kV power line. (Click to view larger version...)
The spectacular aerial ballet will continue in the coming weeks as 12 identical pylons are erected and assembled along the six kilometres that separate the ITER platform from the 400 kV power line.
For ITER, European Domestic Agency F4E or ENGAGE staff with an office facing the platform, the spectacular show continued last week as specialists from the German company GS-Energy finalized the installation of the 120-ton pylon that will hold the power cables for ITER's four-hectare switchyard.

Over two days this week, the four pre-assembled "arms" of the pylon, of which the largest weigh 16 tons, were hoisted one by one to the frame and bolted by a team of eight specialists in "acrobatic works."

Assembling a pylon requires some five tons of individual bolts. Once each bolt is properly tightened, it is "clipped" by way of hammer and awl in order to prevent it from unscrewing.

The spectacular aerial ballet will continue in the coming weeks as 12 identical pylons are erected and assembled along the six kilometres that separate the ITER platform from the existing 400 kV power line.

Next week, workers will pass "pulling cables," which are much thinner and lighter than power cables, through the temporary pulleys that can be seen hanging from the pylons' arms. Once these pulling cables are in place for at least two pylons, they will be attached to the power cables. Powerful truck-mounted winches will pull the power cables into place and pulleys will then be replaced by glass insulators.

One by one, the four pre-assembled ''arms'' of the pylon were hoisted to the frame and bolted by a team of eight specialists in acrobatic works. (Click to view larger version...)
One by one, the four pre-assembled ''arms'' of the pylon were hoisted to the frame and bolted by a team of eight specialists in acrobatic works.
Each pylon will support two power cables, each consisting of three "phase cables", plus two "lightning protection" cables. All cables are four-centimetres in diameter and are made of an aluminium alloy that is lighter, and cheaper, than copper.

A true reflection of the ITER project, pylon assembly is an international operation: most of GS-Energy's acrobatic works specialists are Lithuanian and communicate with their foreman in German. When the acrobats are at the top of the tower, some 40 metres above ground, they rely on the foreman's French skills to formulate their needs to the crane operator...


return to the latest published articles