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News & Media

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  • Vacuum vessel | Sector #6 is leak tight

    The first ITER vacuum vessel sector has passed a helium leak test on site with flying colours. Back in March 2020, as experts from the Korean Domestic Agency [...]

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  • Vacuum vessel | India completes in-wall shielding package

    The Indian Domestic Agency has completed the procurement of about 9,000 in-wall shielding blocks and accompanying support ribs, brackets and fasteners. The majo [...]

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  • Image of the week | Feeders for the coils

    One by one, whether large or small, the elements of the system that delivers electrical power, cryogenic fluids and instrumentation to the ITER magnets are arri [...]

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  • Busbar installation | "Power cords" thicker than train rails

    Connecting an electrical device to a power source requires an extension cord, generally made of stranded copper wire. Depending on the required current intensit [...]

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  • Manufacturing | The next sector in line

    Thanks to the experience acquired during the fabrication of the first production unit of the vacuum vessel, the Korean Domestic Agency and contractor Hyundai He [...]

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Of Interest

See archived entries

The day the rain comes

Eleven-metre-deep trenches now crisscross the platform to accommodate 1.6 kilometres of concrete piping. Maximum diameter: 2.2 metres. (Click to view larger version...)
Eleven-metre-deep trenches now crisscross the platform to accommodate 1.6 kilometres of concrete piping. Maximum diameter: 2.2 metres.
There was a time when the 42-hectare ITER platform was as flat as a pancake. Now, as work progress on the deep underground drainage network, the landscape is in some areas reminiscent of a World War I battlefield.

Eleven-metre-deep trenches now crisscross the platform to accommodate 1.6 km of concrete piping. These pipes, measuring up to 2.2 metres in diameter, will collect rainwater from the platform buildings, roads and trenches.

A branch of the underground network has been designed to evacuate the overflow of a "centennial rain" — extreme rainfall that, statistically, occurs only once every century, but that can lead to water flow estimated at 17.8 m³ per second.

Based on this estimate, a safety margin of approximately 20 percent has been applied to the calculation of ITER's underground rainwater network, which has been dimensioned for a flow of 21.5 m³ per second.

The whole network connects to the storm basins located at the southwest corner of the site through an underground network that was put in place by Agence Iter France during the site preparation phase.

This giant plumbing operation, which necessitated the removal of 50,000 m³ of earth, began in March and will be completed in November.


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