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  • Port cells | All 46 doors in place

    In ITER, ordinary objects and features often take on an awesome dimension. Take the doors that seal off the port cells around the Tokamak for instance. Doors th [...]

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  • Toroidal field coils | Two make a pair

    One of the essential 'building blocks' of the ITER Tokamak is the pre-assembly of two toroidal field coils, one vacuum vessel sector and corresponding panels of [...]

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  • Industrial milestone | Cryostat manufacturing comes to an end in India

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  • Local partners | A celebration for ITER's "vital artery"

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  • Photo reportage | Travelling with a coil

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Of Interest

See archived entries

9 rings, 70 plates, EUR 172 million

Two large contracts for the manufacture of ITER components were recently concluded by the European Domestic Agency (F4E).

Large, D-shaped radial plates will house the toroidal field conductor in specially machined grooves. © SIMIC (left) and CNIM (right) (Click to view larger version...)
Large, D-shaped radial plates will house the toroidal field conductor in specially machined grooves. © SIMIC (left) and CNIM (right)
On 29 November, F4E signed a contract (EUR 12 million) for the supply of nine pre-compression rings for the ITER magnet system with EADS CASA Espacio in Spain. By holding tightly to the toroidal field coils at the top and bottom, these 5-metre-diameter fibreglass composite rings (in pink, at right) will reduce the fatigue on the magnet structures caused by electro-magnetic forces—consequently prolonging their operational life from ten to over twenty years.

Three pre-compression rings at the top and three at the bottom of the toroidal field magnet system will help the structures withstand the terrific electro-magnet forces during machine operation. (The manufacturing contract signed in late November includes three spares.) (Click to view larger version...)
Three pre-compression rings at the top and three at the bottom of the toroidal field magnet system will help the structures withstand the terrific electro-magnet forces during machine operation. (The manufacturing contract signed in late November includes three spares.)
The nine pre-compression rings will be the largest composite structures ever built for operation in a cryogenic environment.

The following week, on 5 December, F4E concluded the contract (EUR 160 million) for the supply of 70 radial plates with a consortium made up of SIMIC S.p.A. (Italy) and CNIM (France).

The radial plates are large, D-shaped stainless steel structures with grooves machined on both sides. Europe is responsible for delivering 10 of ITER's 18 toroidal field coils; as part of this in-kind procurement, 70 radial plates will be necessary to hold the conductor of the toroidal field coils. Prior to the contract signature, both companies had successfully completed radial plate prototypes.

Read the F4E press releases on the pre-compression ring contract and the radial plate contract.


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