Work began at 5:50 a.m. on the perfectly circular segment that will support the weight of the ITER Tokamak and ended 12 hours later at 6:00 p.m.
The finalization of the B2 slab (15 segments, 14,000 m³ of concrete, 3,600 tonnes of rebar) took eight months. Hundreds of people contributed to the different aspects of its realization, including design, procurement, scheduling, quality, finance and construction.
"We kept to an ambitious schedule," adds Ben Slee, deputy head of Site, Buildings and Power Supplies at Fusion for Energy, "but at all times our first priority was quality and safety—these were not jeopardized at any moment. Today we have to thank not only those working on the construction site but also the hundreds of others who have been involved since the preparation and signature of the contract, within the different organizations, and who made this construction possible in terms of design, procurement, scheduling, quality, finance, etc."
''With the completion of the B2 slab, a new chapter opens in the history of our project,'' said ITER Director-General Motojima. ''In September, construction of the Tokamak Complex will begin in earnest. You have built the floor; now come the walls, then the roof, and after that the machine itself...''