Enable Recite

Subscribe options

Select your newsletters:

Please enter your email address:

@

Your email address will only be used for the purpose of sending you the ITER Organization publication(s) that you have requested. ITER Organization will not transfer your email address or other personal data to any other party or use it for commercial purposes.

If you change your mind, you can easily unsubscribe by clicking the unsubscribe option at the bottom of an email you've received from ITER Organization.

For more information, see our Privacy policy.

News & Media

Latest ITER Newsline

  • FEC 2020 | E-conference opens, participation never higher

    The 28th IAEA Fusion Energy Conference (FEC) is off to an auspicious start. Open to the public for the first time thanks to the technical possibilities of an al [...]

    Read more

  • Vacuum vessel in Europe | Fitting the pieces virtually

    A 'virtual fit' tool developed by the European Domestic Agency is helping the vacuum vessel manufacturing team anticipate the challenge of final assembly—the mo [...]

    Read more

  • Gas injection system | Last manifolds completed in China

    Contractors to the Chinese Domestic Agency have completed an important part of the gas injection system—the distribution manifolds that carry gas species from t [...]

    Read more

  • Magnets | Seventh vertical coil reaches ITER

    Seven toroidal field coils have reached ITER in the past year. The latest, TF3 from Europe, passed through the ITER gates on Friday 3 May. The European and Japa [...]

    Read more

  • Tritium Building | Work resumes

    The energy-producing plasmas in ITER will be fuelled in equal measure by the hydrogen isotopes deuterium and tritium. Deuterium is a stable element that industr [...]

    Read more

Of Interest

See archived entries

Load tests

As heavy as a 747 and (almost) as airworthy

In the ITER Assembly Hall, two giant sector sub-assembly tools (SSAT) provided by Korea are tasked with preassembling some of the most massive components of the Tokamak. Over the past two months, functional tests under load were performed and completed on the first of the tools. With the transfer last week of the loads to tool #2, the same operations are about to be repeated.

Over the past two months, functional tests under load were performed and completed on the first of the two giant sector sub-assembly tools (SSAT). With the transfer last week of the loads to tool #2, the same operations are about to be repeated. (Click to view larger version...)
Over the past two months, functional tests under load were performed and completed on the first of the two giant sector sub-assembly tools (SSAT). With the transfer last week of the loads to tool #2, the same operations are about to be repeated.
The SSAT tools will support 440-tonne sectors of the vacuum vessel in their centre as they are pre-assembled with two D-shaped toroidal field coils and thermal shield panels.

In order to test the full range of the tool's functions, two 360-tonne dummy loads—representative of the weight, general shape and centre of gravity of a toroidal field coil—are lifted onto the tools' lateral structures, and positioned and aligned with utmost precision.

The second 360-tonne load was transferred last Thursday 26 September to SSAT#2. The tool's particular configuration made the operation a delicate one: the temporary wall that separates the Assembly Hall from the Tokamak Building constrains the tool on its right side and prevents the full opening of the lateral wing.

Because of this configuration, and also because the load had to be moved from one tool to the other, the lifting clearance was exceptionally tight—no more than 20 centimetres on each side of the test load structure.

With approximately two dozen specialists involved and a large logistical team in the background, the operation, condensed here in a time-lapse video, took the better part of the day.

With its frame now bearing the weight of two dummy loads, the second tool will be submitted to approximately one month of functional tests. Shortly before Christmas the loads will be removed and stored pending the assembly of the "upending tool," whose parts should arrive at ITER in October. Early next year, the upending tool should be ready for functional tests with the same dummy loads.

Once "upending" tests are complete, the two 360-tonne loads will have one final service to render—the testing of the Assembly Hall's double overhead crane once the crane hall over the Tokamak Building is completed and the crane rails are extended over the Tokamak pit.




return to the latest published articles