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Russian coil delivered

All ring-shaped magnets now "home" at ITER

13 Feb 2023

Of all the components and systems that Russia contributes to ITER, poloidal field coil #1 (PF1) is the most massive and one of the most complex. Measuring nine metres in diameter and weighing approximately 160 tonnes, it is the smallest of the six ring-shaped magnets that circle the ITER Tokamak and the only one that is not procured by Europe.

PF1_2.jpg
PF1 passed the ITER gates at around 4:15 a.m. on Friday 10 February. The long journey had begun on 1 November 2022 when the coil departed the Sredne-Nevsky Shipyard in Saint Petersburg.
When the trailer transporting the coil passed the ITER gates, at around 4:15 a.m. on Friday 10 February, a long journey came to an end. The transport of the component had begun on 1 November 2022, when the coil departed the Sredne-Nevsky Shipyard in Saint Petersburg after close to six years of fabrication. Sailing the Neva River down to the open sea through the Gulf of Finland, the component travelled through the Baltic Sea, the North Sea, the Atlantic and the Mediterranean, reaching Marseille's industrial harbour on 9 January 2023 and beginning its land journey one month later to the day.

PF1 is not, by far, the heaviest of the 141 HELs (Highly Exceptional Loads) that have travelled the ITER Itinerary since January 2015. It is, however, one of the widest and—as a consequence—one of the most difficult to steer through plane-tree-lined roads, over bridges and through the extremely narrow passage between two small cliffs a few kilometres before the ITER construction site. Due to these challenges, it took the convoy four nights instead of the standard three to cover the whole length of the 105-kilometre-long ITER Itinerary.

Like each HEL transport operation, the PF1 convoy relied on complex logistics involving men and machinery—9 drivers, navigators and mechanics to operate the 288-wheel self-propelled trailer and the powerful pulling and pushing tractors; a team of 14 people charged with removing road signs and other obstacles on the trailer's trajectory (and putting them back in place after the convoy's passage); and 70 officers from the dedicated protection group of the French Gendarmerie.

The arrival of PF1 on the construction site marked a significant milestone for the ITER Project, as all seven Members have now delivered at least one of the major components they are responsible for.

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Due to the exceptional width of the coil's transporting frame (in excess of 10 metres), it took the convoy four nights instead of the standard three to cover the whole length of the 105-kilometre-long ITER Itinerary.
In the afternoon that followed, a small event was organized that brought together, in a duplex with Russia, a delegation of ITER staff and representatives of all those who had contributed to the design, fabrication, transport and delivery of the coil.

Speaking from Russia on behalf of Rosatom Director-General Alexey Likhachev, Anatoli Krasilnikov, Head of the Russian Domestic Agency, described ITER as "a vivid example of the closest international collaboration," of which Russia was "an integral part." After a quick update on project progress by ITER Head of Communication Laban Coblentz, Krasilnikov added a personal and emotional note, saying: "This is a great event for us today, but not the final, not the last one. We will meet each other many, many times for similar events, and it will be very important to demonstrate that fusion is a reality."

For ITER Director-General Pietro Barabaschi, the delivery of the PF1 magnet sent the strong message that "the ITER Organization and the Domestic Agencies are steadily continuing to deliver on their commitments for the construction of the ITER research facility in an integrated way," and that despite inevitable difficulties, "we will succeed, build the ITER Tokamak and deliver unprecedented research capabilities to support the realization of fusion power."

With PF1 in protective storage, all six poloidal field coils are now safely "home": PF6 and PF5 already installed in the Tokamak assembly pit, PF2 stored, and PF3 and PF4 in the last stages of fabrication and testing in Europe's Poloidal Field Coils Winding Facility on site.

Click here to view a video of the transport and delivery of PF1.

In the afternoon that followed the delivery, a small event was organized on the ITER platform. Here, ITER Director-General Pietro Barabaschi addresses colleagues both on site and in Russia (through a duplex video connection).
Present on the Russian side were (clockwise, starting top left) Igor Rodin, Deputy Director-General (thermonuclear and fusion research), Efremov Institute; Anatoli Krasilnikov, Head of the Russian Domestic Agency ITER Russia; Olesya Solovyeva, Director of the ITER Project Office, NPO "GKMP" LLC; and Alex Petrov, Head of Communications, ITER Russia. Media representatives also participated in the exchanges with Director-General Barabaschi.
ITER staff and representatives of all the teams who had contributed to the design, fabrication, transport and delivery of the coil pose for a group photo. Despite inevitable difficulties, "we will succeed, build the ITER Tokamak and deliver unprecedented research capabilities to support the realization of fusion power," said ITER Director-General Pietro Barabaschi.
Once the trailer is safely parked on the ITER platform, a series of checks must be performed before the teams can enjoy some well-deserved rest.
It is 4:15 a.m. on a cold February night as the convoy crosses the roundabout at the entrance of the ITER site.
A few kilometres before the ITER construction site, this passage between two small cliffs was widened in September 2018 to allow for the passage of the two widest HEL components: PF6 from Europe and PF1 from Russia. (Read all about it at https://www.iter.org/newsline/-/3081.)
At Pont de Mirabeau, the convoy passes by the remnants of an old bridge that spanned the Durance River. The narrowest section of the ITER Itinerary begins here.
In order to spread the weight of its own mass, combined with that of the coil and transport frame (480 tonnes in total), the self-propelled trailer is equipped with no fewer than 288 wheels.
On the last leg of its land journey, the convoy transporting poloidal field coil #1 from Russia has just passed through the village of Peyrolles and its famous plane-tree-lined boulevard. ITER is still 20 kilometres distant and more than five hours away.
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