Subscribe options

Select your newsletters:

Please enter your email address:

@

News & Media

Latest ITER Newsline

  • Cryostat base insertion | "A moment that will live in our memories"

    In the closing scene of the 1977 movie Close Encounters of the Third Kind, an alien spaceship hovers above an anxious and awestruck crowd of scientists and engi [...]

    Read more

  • Cryolines | Another day, another spool

    Having wedged his body and equipment into the cramped space between the ceiling and the massive pipe, a worker is busy welding two cryolines spools. A few metre [...]

    Read more

  • Image of the week | Bearings unveiled

    The construction teams are in the last stages of preparing the Tokamak pit for the first major operation of ITER machine assembly: the lowering of the cryostat [...]

    Read more

  • Technology | Perfecting tritium breeding for DEMO and beyond

    While ITER will never breed tritium for its own consumption, it will test breeding blanket concepts—the tools and techniques that designers of future DEMO react [...]

    Read more

  • Fusion world | Japan and Europe complete the assembly of JT-60SA

    The JT-60SA fusion experiment in Naka, Japan, is designed to explore advanced plasma physics in support of the operation of ITER and next-phase devices. After s [...]

    Read more

Of Interest

See archived entries

Lower cylinder

A transfer that felt like art

Art has little to do with the transfer of a giant component. On Monday however, as ITER was preparing to celebrate Leonardo da Vinci's 500th anniversary, science, technology and industry conspired to provide a strikingly spectacular and beautiful event. As the set of trailers carrying the lower cylinder of the ITER cryostat slowly crawled out of the Cryostat Workshop, everything combined to create an awesome view: the minimalist architecture of the workshop; the cylindrical component all draped in white, and the shimmering steel of the Assembly Hall ... all against the backdrop of the intense blue of a spring sky in Provence.

On 15 April, the lower cylinder is moved out of the Cryostat Workshop to exterior storage area 73 (out of the picture frame, further to the left), where it will remain until it is time to enter the Cleaning Facility (right) for integration into the ITER machine pit. (Click to view larger version...)
On 15 April, the lower cylinder is moved out of the Cryostat Workshop to exterior storage area 73 (out of the picture frame, further to the left), where it will remain until it is time to enter the Cleaning Facility (right) for integration into the ITER machine pit.
The lower cylinder of the ITER cryostat is but one section of the giant thermos that will envelop the ITER Tokamak. Standing 12 metres high, it represents one-third of the total height of the ITER machine. As operators stood close to it, carrying out the highly delicate transfer operation, one could measure how tall, large and massive ITER will be.

Transferring the near-500-tonne load from its assembly site to the storage area a few dozen metres away required no less than four self-propelled modular transporters arranged in a square and moving in perfect coordination. Particularly impressive was the sharp 90-degree turn that the trailers had to take in order to reach the storage area—192 independent wheels slowing rotating at different angles, like small appendages of a powerful living organism.

To date, the lower cylinder is the heaviest load to be moved on the ITER platform. Solidly encased in its steel frame and carefully cocooned in air-tight material, it will remain in storage until the time comes to move it into the assembly pit.

The operation on Monday was a key milestone involving a dozen stakeholders—the cryostat team; heavy load transport specialist Sarens; metrology experts from ITER; global logistics provider DAHER, and many others (see box).

Transferring the lower cylinder to the storage area has freed a large working space inside the Cryostat Workshop. Soon, this space will be occupied by the assembly and welding operations for the upper cylinder whose segments are already on their way from their manufacturing location in India.

Participants in the transfer operation of the cryostat lower cylinder:

ITER Organization: Oversight, storage area, metrology, equipment rental, protection-important component surveillance; ITER's Construction Management-as Agent (MOMENTUM): Supervision, site inspections, site coordination; Cocoon Holland: Weather-proof packing, bi-annual inspection; Sarens: Component transport on self-propelled modular transporters; DAHER: Delivery of cocooning hardware to ITER, installation of shims in storage area; Indian Domestic Agency and its contractor Larsen & Toubro: Completion of cryostat lower cylinder; European Domestic Agency and its contractor ENGAGE: Management of construction work packages; APAVE: Health and Safety Coordinator.



return to the latest published articles