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Latest ITER Newsline

  • Neutral Beam Test Facility | After upgrades, SPIDER testbed set to restart

    After a two-year shutdown for upgrades, the SPIDER testbed at the ITER Neutral Beam Test Facility in Padua, Italy, is preparing for commissioning and operation. [...]

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  • ITER Research Plan | Jointly preparing a new blueprint

    As part of work underway to update the ITER Project Baseline, a group of experts nominated by the Members met in February to evaluate the new blueprint for achi [...]

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  • On site | Component transfer goes electric

    On Friday 16 February, a toroidal field coil was moved from the Assembly Hall to a storage place a few hundred metres away. Quite a routine operation at ITER, a [...]

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  • Image of the Week | Director-General Barabaschi visits India

    Following his visit to China, Japan and Korea last autumn, ITER Director-General Pietro Barabaschi continued his tour of ITER stakeholders w [...]

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  • Science | Increasing fusion performance with energetic-particle-driven instabilities

    New results published in Physical Review Letters suggest that instabilities driven by energetic particles can have a positive impact on fusion performance. In t [...]

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Of Interest

See archived entries

Image of the week

Into the depths

The hot and cold basins that are part of the ITER heat rejection system are equivalent in volume to half a dozen Olympic pools. When filled to capacity, the pressure exerted by the water on the bottom slab, walls and joints of the concrete structure is considerable. In mid-October an "assessment of tightness" was performed, during which the basins were "overfilled" with 27,000 m³ of water (7,000 m³ more than their operational volume).

For five days in late November, a diver explored the depths of the heat rejection basins, inspecting the critical zones of the massive concrete structure. (Click to view larger version...)
For five days in late November, a diver explored the depths of the heat rejection basins, inspecting the critical zones of the massive concrete structure.
Under the tremendous pressure exerted by 27,000 tonnes of water, the basins incurred the expected deformations—in the range of 4 to 6 millimetres—before settling. However, operators needed to confirm that no cracks had occurred in the critical zones of the concrete structure such as corners and joints.

And for this, there was only one option: sending a diver into the depths of the basins to see with his own eyes and report back. The operation lasted five days in late November... when even the "hot" basin was extremely cold.



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