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  • Divertor inner target | Trial by fire

    The first full-scale industrial prototype of a divertor inner vertical target has successfully passed through a rigorous campaign of thermal testing. In the [...]

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  • In-vessel tasks | Step right up onto the platform

    In order to accommodate the dozens of teams that will be involved with assembly tasks on the inside of the vacuum chamber, the ITER Organization has designed a [...]

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  • Steady at the helm | Bernard Bigot accepts a second term

    In a unanimous decision, the ITER Council has voted to reappoint Dr Bernard Bigot to a second five-year term as Director-General of the ITER Organization. The C [...]

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  • Electrical network | Independance Day

    For over 10 years, power has been supplied to ITER by the neighbouring CEA research facility. Since Saturday, however, the entire ITER site is independently pow [...]

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  • Image of the week | A long journey for the last cold box

    Procured by India and manufactured by Linde Kryotechnik AG near Zürich, Switzerland, the last of the cold boxes needed for the ITER cryoplant has begun its long [...]

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Of Interest

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Conceptual design for ITER's vacuum lines completed

Sabina Griffith

Preparation is everything: no real design recommendation or improvement could be proposed. (Click to view larger version...)
Preparation is everything: no real design recommendation or improvement could be proposed.
The vacuum lines are the veins of the ITER machine. They transport the exhaust from the vacuum vessel, cryostat and other systems to the tritium plant for cleaning and reprocessing. They are essential for the majority of ITER systems to function.

An impressive 15-kilometre network of stainless steel piping - some of which is designed to safely contain a higher tritium throughput than any other device—forms one of ITER's most extensive distributed systems along with cryo and water cooling.

''It now appears fully achievable to realize the signing of the Procurement Arrangement in March as scheduled,'' design leader Robert Pearce (centre) said after the succesful meeting. (Click to view larger version...)
''It now appears fully achievable to realize the signing of the Procurement Arrangement in March as scheduled,'' design leader Robert Pearce (centre) said after the succesful meeting.
As a critical system for the successful achievement of First Plasma, the completion of the conceptual design review for the main vacuum lines and assembly leak detection equipment, this week, was a rewarding result for a true team effort. "This was truly a comprehensive and well advanced review," was the comment from Dave Rasmussen from US ITER, one of the many experienced vacuum experts on the review panel.

Among other topics, the panel was asked to insure that the impacts of non-achievable requirements have been correctly assessed. However the panel could not identify any issues and one distinguished panel member, Rainer Laesser of F4E, in his final conclusions expressed his slight disappointment with the fact that no real design recommendation or improvement could be proposed. In total, the panel felt that the whole review was meticulously prepared and conveyed exceptional understanding of tokamak construction.

"It now appears fully achievable to realize the signing of the Procurement Arrangement in March as scheduled," design leader Robert Pearce said. Soon after, the paperwork will turn into real hardware, as the first vacuum lines are expected to be installed in 2013.


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