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

  • Fusion world | A helium campaign kicks off at JET

    After achieving record-breaking results on the Joint European Torus during 2021 experiments with the high-performance fuel mix of deuterium and tritium, EUROfus [...]

    Read more

  • Coil winding table | Seven years of faithful service

    In November 2015, workers from the European contractor Sea Alp Engineering, an Italian company based in Turin, began installing a large circular structure at th [...]

    Read more

  • Image of the week | Down under

    It has been close to five months since the first vacuum vessel module was installed in the Tokamak pit. The view from above is by now familiar: a huge D-sha [...]

    Read more

  • On site | An annual reminder about safety

    ITER's Safety and Quality Department knows: you can never repeat an important message often enough. The second annual ITER Safety Day took place on 15 Septe [...]

    Read more

  • Top management | ITER Council appoints new Director-General

    Convening in an extraordinary session in Paris, the ITER Council has appointed Pietro Barabaschi as the next Director-General of the ITER Organization. Mr Barab [...]

    Read more

Of Interest

See archived entries

On site

A runway for the cryostat

A section of runway-worthy tarmac has been completed at ITER. But no plane will ever land here.
 
Workers of the French company Colas finalize the surfacing by spreading concrete grout. The work was carried out under the responsibility of Fusion for Energy (F4E), the European Domestic Agency, and supervised by Engage, F4E's architect-engineer contractor. (Click to view larger version...)
Workers of the French company Colas finalize the surfacing by spreading concrete grout. The work was carried out under the responsibility of Fusion for Energy (F4E), the European Domestic Agency, and supervised by Engage, F4E's architect-engineer contractor.
On three consecutive evenings last summer, work proceeded into the night to finalize the surfacing on a 5,000 m² area near the Cryostat Workshop. The road works were carried out to prepare for the relocation of a completed section of the ITER cryostat—the 375-tonne lower cylinder—from the workshop to a dedicated storage area on the platform.
 
The combined weight of the cryostat section and its transport vehicle calls for airfield-grade paving materials. While regular roads have a load-bearing capacity of 5 tonnes per cubic metre, the surface in front of the Cryostat Workshop needs to withstand higher pressures of up to 20 tonnes per cubic metre. And like on airfields, the new pavement also has a higher resistance for turning loads.
 
In front of the 30-metre doors of the Cryostat Workshop, the surface has been reinforced to prepare for the removal of the first completed section—the 375-tonne lower cylinder. (Click to view larger version...)
In front of the 30-metre doors of the Cryostat Workshop, the surface has been reinforced to prepare for the removal of the first completed section—the 375-tonne lower cylinder.
A combination of specially designed materials ensures that the road surfacing—while only 15 centimetres thick—has the required properties. The compacted 11-centimetre-thick base layer consists of Optibase, an asphalt of a particular formulation developed for heavy-load roads. This has been topped with a thin layer of highly permeable asphalt. In a final step, workers spread a reinforcing concrete grout across the entire asphalt surface, allowing it to seep into all the cracks and open spaces. 
 
The surface in front of the Cryostat Workshop is now ready for the relocation of the lower cylinder to the nearby storage area, making space for the upper cylinder that will be assembled next.
 
It is only the first area on the platform that has been upgraded to airfield-like tarmac. Other roads on the platform will follow suit in receiving this treatment once the work on the underground service networks in those areas has been completed. This will include the stretch of road near the Cleaning Building as well as the roads leading to the Poloidal Field Coils Winding Facility and around the cryoplant.


return to the latest published articles