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  • Neutral Beam Test Facility | Lessons learned from SPIDER, a full-size negative ion source

    SPIDER finished its first test campaign in late November 2021 and is now entering an upgrade phase. During this time, the testbed will be shut down for about on [...]

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  • Manufacturing | Korea completes a third vacuum vessel sector

    A third 40-degree sector of the ITER vacuum vessel has exited the Hyundai Heavy Industries production line in Ulsan, Korea. Sectors representing one-third of th [...]

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  • On-site coil manufacturing | Two more to go!

    In the European winding facility on site, two large poloidal field coils have already left the manufacturing line. Two others are currently advancing through th [...]

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  • Manufacturing | Completion of the first vacuum vessel gravity support

    The factory acceptance test on the first ITER vacuum vessel gravity support has been successfully completed at Haneul Engineering in Gunsan, Korea. Under the 8, [...]

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  • Technology | Hail showers in ASDEX Upgrade for ITER disruption mitigation

    Just before the 2021 Christmas holiday break, the team at the ASDEX Upgrade tokamak successfully fired frozen deuterium pellet fragments into a plasma as part o [...]

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Of Interest

See archived entries

Cryolines

India's INOXCVA completes full scope

All angles, bends and turns, a complex system of cryolines produced in India will distribute the cooling power generated by the ITER cryoplant to clients throughout the installation. Four years after manufacturing was initiated, the last batch left INOXCVA's Vadodara facility in July 2021.

Multi-process-pipe cryolines during fabrication at M/s INOXCVA, Vadodara, in 2019. (Click to view larger version...)
Multi-process-pipe cryolines during fabrication at M/s INOXCVA, Vadodara, in 2019.
Cryolines begin their long journey in the ITER cryoplant—where the cooling fluids are produced—and continue along an elevated bridge to the Tokamak Building about 100 metres away to bring cryogenic fluids to the machine's magnets, thermal shield and cryopumps.

Ranging from 25 to 1000 millimetres in diameter, cryolines can host up to six or seven process pipes that are devoted to a specific fluid, flow direction or function; each process pipe is carefully and individually insulated to prevent thermal losses. Shipped in spools, or sections, cryolines are connected on site by highly trained welders. More than 500 sections in all will be installed in the Tokamak Complex.

INOXCVA India, a company with a quarter-century of experience in cryogenics, was responsible for manufacturing approximately 4 km of cryolines (operating at temperatures ranging from -269 to -193 °C) and about 6 km of return lines for warm gases. The manufacturing of spools began in 2017 in a specially constructed workshop complete with a clean room devoted to the most delicate and sensitive operations. (See this 2019 report from the factory floor in Vadodara. 

The last batch, sealed under a pressurized nitrogen atmosphere and tightly wrapped in protective material, left the company's Vadodara facility on 29 July 2021. 

A small ceremony to mark the milestone was remotely attended by Sh. K.N. Vyas, Secretary, Department of Atomic Energy; Bernard Bigot, Director-General of the ITER Organization; and Shashank Chaturvedi, Director of the Institute for Plasma Research. 

This brings the Indian Domestic Agency closer to completing one of its largest procurement packages—cryolines and cryodistribution, second only in value to the procurement of the ITER cryostat.

See photos of the event here.



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