This vast workshop will host custom-made tools as well as two 750-tonne cranes that will travel the length of the Assembly and Tokamak buildings. Held in place by temporary jacks following a 14-hour lift operation, the 730-tonne metal structure will be secured to the side pillars in the weeks to come.When the roof structure is fully secured to the side columns, the temporary structures put in place for the lift cables (top) will be dismantled.Over the course of 14 hours, 22 hydraulic jacks hoisted the huge structure along thick steel cables that hung from support structures that had been temporarily fixed to the top of the pillars.Laser metrology is used to verify the position of the structure as it is lifted. Explore the science of ITER.Follow the construction of the world's largest tokamak in southern France.The latest photos, videos and publications from the ITER Organization.The upending tool (right) was delivered to the Assembly Hall on 6 November and is now being assembled and precisely positioned on a set of base plates embedded in the floor in the far right corner. Photo: F4EThe first level pillars for the Assembly Building measure 12 metres in height. European Domestic Agency contractors are currently coating the floor of the ITER Assembly Hall (6,500 m²) with epoxy resin. Pictured: the ITER Director-General leads a tour for US Secretary of Energy Rick Perry and US Ambassador to France Jamie McCourt.The first 22-metre-tall, 800-tonne SSAT tool is now in place. On the left, the first crane is positioned for foundation work in the Seismic Pit. Following the roof lifting operation on 11 September, the temporary structures that held the hydraulic jacks have been removed and workers have nearly finished tightening 3,000 connexion bolts. Each girder now weighs 186 tonnes.A man-sized hook is passed through an opening in the roof by the beam of the crawler crane. The building's foundation will have a thickness of 1.2‒2.2 metres.
Adjacent to the Tokamak Complex, the Assembly Building will be the location for pre-assembly activities on the massive components of the ITER device before they are transported to the Tokamak Pit for installation.
Photo: Christian Lünig/ VG Bild und KunstSoon to reach 60 metres, the pillars of the Assembly Building loom over the Tokamak Seismic Pit below.
Once the torque has been hydraulically adjusted on every bolt and the positioning laser-aligned, the assembly of the 20-metre-high handling tool will begin.Procured by Korea, the twin SSATs are being assembled by technicians from the French company CNIM. Structural elements on the inside of the tool's three pillars contribute to stability.Next to the first tool, base rail plates have been installed for the twin tool that is undergoing factory acceptance tests now in Korea. The 12-metre columns are one-fifth of their final height. Rotational tests begin late in July.Even in the most technical of operations, there is always a need for final adjustment by hand. Photo: PES MetrologyMetrology teams are at work in the Assembly Hall to characterize segments of the SSAT tool before they are lifted into place.Late at night in December the principal crane of the Assembly Building was subjected to loads that were +10%/+25% of nominal—all part of commissioning tests for the important equipment.Observers during the load tests include representatives of the crane manufacturer Reel, the ITER Organization, the architect-engineer Engage, and the safety controller Bureau Veritas.These heavy metal blocks—stacked seven tall—will be lifted some 50 metres overhead during testing.Questions about grouting raised during the installation of the rails have been resolved, and the first tool segment can be moved into place.
The travelling cranes are approximately 45 metres above floor level.Four giant hooks like this one will hang from the double overhead cranes in the Assembly Hall, each one with a lift capacity of 375 tonnes.Before the mammoth tool can be erected in the Assembly Hall, the anchoring technology must be carefully installed.In the future, this vestibule will be dedicated to the cleaning of ITER components before they are delivered into the Assembly Hall.
Explore the science of ITER.Follow the construction of the world's largest tokamak in southern France.The latest photos, videos and publications from the ITER Organization.Above, the main hoists of the Assembly Building, capable of handling loads of up to 1,500 tonnes. In a few days, a giant poster of the ITER Tokamak will be installed.On Friday 17 June, a trolley is lifted to join the two girders already in place. "The tool is designed to handle two types of components that have nothing in common except their exceptional size and weight: 440 tonnes for a vacuum vessel sector, 360 tonnes for a toroidal field coil.
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