Atelier cryostat
L'agence domestique indienne a construit l'Atelier cryostat sur le chantier °ÄÃÅÁùºÏ²Ê¸ßÊÖ pour l'assemblage des quatre énormes sections du cryostat °ÄÃÅÁùºÏ²Ê¸ßÊÖ (2016-2022). Le bâtiment abrite actuellement des activités liées à l'assemblage de la machine °ÄÃÅÁùºÏ²Ê¸ßÊÖ.
Dans le secteur nord-est de la plateforme se trouve l'Atelier cryostat. C'est dans cette structure, d'une surface deÌý6 000 mètres carrés, que les quatre sections du cryostat ont été assemblées à partir de 54 éléments fabriqués par l'agence domestique indienne.
³¢±ðÌýcryostatÌýest une enceinte sous vide qui enveloppe la chambre à vide et les aimants supraconducteurs d'°ÄÃÅÁùºÏ²Ê¸ßÊÖ. La base du cryostat a été le premier élément de la machine mis en place dans la fosse du tokamak. Le « couvercle » sera le dernier : son installation interviendra après que la chambre à vide et les aimants auront trouvé leur place définitive.
Comme les plus grandes bobines de champ poloïdal, les sections du cryostat seraient beaucoup trop lourdes et encombrantes pour être acheminées sur le site par l'Itinéraire °ÄÃÅÁùºÏ²Ê¸ßÊÖ. La base du cryostat, qui pèse 1 250 tonnes, est la pièce la plus lourde de tout l'assemblage du tokamak ; le poids des cylindres inférieur, supérieur et du « couvercle » sont de l'ordre de 600 à 800 tonnes.
Une fois assemblé et soudé dans la fosse, le cryostat mesurera 30 mètres haut pour 30 mètres de diamètre. Deux sections—la base et le cylindre inférieur—ont »åéÂáà été mise en place ; les deux autres sont actuellement stockées sur la plateforme sous des bâches protectrices.Ìý
Les opérations d'assemblage dans l'Atelier cryostat se sont déroulés sur deux plateaux de 30 mètres par 30, qui ont également servi de plateforme de transport. Dans des opérations assez spectaculaires à Ìýchaque fois, les sections ont quitté l'Atelier cryostat sur des remorques modulaires motorisées (SPMT).
Depuis la fin des activités sur les sections du cryostat en 2022, le bâtiment a été transformé en atelier pour d'autres activités d'assemblage.
Cliquez ici pour tout savoir sur l'assemblage du cryostat °ÄÃÅÁùºÏ²Ê¸ßÊÖ.
ÌýAtelier cryostat en chiffres :
- Construction : juin 2013-novembre 2014
- Longueur : 110 mètres
- Largeur : 50 mètres
- Hauteur : 27 mètres
- Activités d'assemblage : 2016-2022
Images
Cryostat Workshop inauguration
2014-11-21 - On Friday 21 November 2014, the on-site Cryostat Workshop is inaugurated in the presence of members of the press. Left to right: Benoît Moncade, director-general of building contractor Spie-Batignolles; Predhiman Krishan Kaw, member of the Indian delegation to the °ÄÃÅÁùºÏ²Ê¸ßÊÖ Council; M.V. Kotwal, the president of Larsen & Toubro's Heavy Engineering Division (responsible for the fabrication of the °ÄÃÅÁùºÏ²Ê¸ßÊÖ cryostat); and °ÄÃÅÁùºÏ²Ê¸ßÊÖ Director-General Osamu Motojima. Follow all fabrication news at: /construction/sitefabricationcryostat
A peek inside
2014-11-18 - The interior of the completed Cryostat Workshop photographed in November 2014.
On-site assembly of four large cryostat sections
2014-11-18 - Within the on-site workshop, cryostat assembly activities will take place on two huge steel platforms built to support the weight of the components, jigs and fixtures.
On the other side
2014-11-18 - It's not often that we get to see around the back of the building ...
Signed, sealed, delivered
2014-08-21 - The complete Cryostat Workshop, seen from the foundations of the Assembly Building.
Construction is over
2014-04-29 - From above, the completed Cryostat Workshop (in grey) stands alongside the manufacturing facility for the poloidal field coils (in red). Work ended on the facility in April 2014 after approximately 18 months of construction. Photo: © LESENECHAL/PPV-AIX.COM
Having a look at progress
2014-04-25 - The metallic super-structure is finished; the gantry crane is in place. A small delegation from the °ÄÃÅÁùºÏ²Ê¸ßÊÖ Organization and the Indian Domestic Agency (which is responsible for cryostat fabrication and assembly) notes the progress accomplished on the Cryostat Workshop since building works began in June 2013.
Early morning Cryostat Workshop
2014-04-08 - Taken before 7:00 a.m., the completed Cryostat Workshop glows silver as the day rises. The 18-metre-tall gantry crane is now in place on the inside.
The exit doors
2014-03-19 - After assembly, the large sections of the cryostat will leave the Workshop through the large door on the west facade for transportation to the Tokamak Pit.
Equipping the interior
2014-02-12 - On 12 February 2014, nine months after construction began on °ÄÃÅÁùºÏ²Ê¸ßÊÖ's on-site Cryostat Workshop, the first elements of the workshop's gantry crane were delivered to the °ÄÃÅÁùºÏ²Ê¸ßÊÖ site.
Completing the Cryostat Workshop cladding
2014-02-03 - Against the backdrop of the snowy pre-Alps, workers on the roof of the Cryostat Workshop in February position large pieces of aluminum cladding.
Four large segments
2014-01-28 - The four °ÄÃÅÁùºÏ²Ê¸ßÊÖ cryostat segments—with a diameter of 30 metres each—will leave the facility by the great door on the left to be positioned in the Tokamak Building.
2014-01-15 - The Cryostat Workshop (left) takes its place next to the Poloidal Field Coils Winding Facility as the second structure on the °ÄÃÅÁùºÏ²Ê¸ßÊÖ platform. A total of 39 buildings or technical areas are planned in all.
Assembling a giant component
2014-01-15 - The vacuum container that will surround the tokamak and the magnets (the °ÄÃÅÁùºÏ²Ê¸ßÊÖ cryostat) will be approximately 30 metres tall and 30 metres wide. Four large segments will be assembled in this on-site workshop.
The platform is changing
2014-01-07 - As cladding progressively covers the metallic structure of the Cryostat Workshop, it becomes one of the most visible features of the °ÄÃÅÁùºÏ²Ê¸ßÊÖ platform.
Inside of the Cryostat Workshop
2013-12-12 - In this schematic, we get a look inside the Cryostat Workshop where a goliath crane will run the length of the building between the two assembly areas. Four completed components, weighing from 600-1,250 tonnes, will leave the facility by the western door.
The best lookout point
2013-12-11 - As the °ÄÃÅÁùºÏ²Ê¸ßÊÖ site becomes more and more congested, the best lookout point will soon be the top of the Cryostat Workshop!
Cladding underway
2013-12-11 - Cladding works continue on the structure of the Cryostat Workshop as 2013 draws to a close.
December 2013
2013-12-11 - South-facing cladding is complete.
Parallel assembly activities
2013-11-29 - The cryostat segments will be needed in two waves—first the two lower segments, and then approximately two years later the two upper segments. Two assembly platforms will permit parallel assembly activities in the Cryostat Workshop.
Cladding begins
2013-11-29 - On the south side of the building, cladding operations have begun.
Work progressing well
2013-11-29 - Approximately 25 people are currently working on the site of the Cryostat Workshop and works are progressing as scheduled.
In a straight line
2013-11-29 - Segments of the cryostat will leave the Workshop and be transported in a straight line directly into the Assembly Building, whose foundation slab is visible through the beams.
Tallest building yet
2013-11-29 - The Cryostat Workshop is nine metres taller than its closest neighbour—the Poloidal Field Coils Winding Facility.
Another factory rises
2013-10-03 - At 110 metres long, 44 metres wide and 27 meters tall, the Cryostat Workshop will be more of a factory than a workshop. When it is completed in February 2014 it will be second industrial building on the °ÄÃÅÁùºÏ²Ê¸ßÊÖ platform.
Trusses up
2013-10-03 - About half of 50 steel columns are already in place; in the coming weeks they will double in height to attain 27 metres.
Grey livery for the Cryostat Workshop
2013-10-03 - The steel structure will be light, but sturdy for a building this size. Approximately 500 tonnes of steel will go into the trusses, beams and columns—enough to withstand the strong Mistral wind that regularly blows over Provence.
In September
2013-09-18 - Steel trusses are stocked on the basemat, while construction progresses on the offices and technical rooms of the Cryostat Workshop.
The °ÄÃÅÁùºÏ²Ê¸ßÊÖ platform in late August 2013
2013-08-29 - As the last foundation segment is poured on the far side of the basemat, work begins in the foreground on the walls of the technical workshops and offices.
Small team moving quickly
2013-08-26 - Approximately 20 people are working currently on the site of the Cryostat Workshop, where the basemat is nearly completed and pouring is about to begin on the first floor of the office building.
Visible progress on the Cryostat Workshop site
2013-08-22 - Adjacent to the Cryostat Workshop, the ancillary building under constrution will house offices, machinery, power supplies and other utilities.
Assembling the four segments of the cryostat
2013-07-22 - Within the on-site Cryostat Workshop, assembly activities will take place on two huge steel platforms built to support the weight of the components, jigs and fixtures.
Finishing the basemats
2013-07-20 - Foreground: the basemat for the temporary Cryostat Workshop. Left: the exit platform for the completed poloidal field coils. Right centre: the Assembly Building basemat.
Another large steel structure
2013-07-15 - Workers complete rebar operations on the 5,500 square-metre slab of the Cryostat Workshop, adjacent to the Poloidal Field Coils Winding Facility.
Cryostat Workshop steams ahead
2013-07-15 - Concrete pouring is about to begin on the Cryostat Workshop in July 2013.
18 months of construction
2013-06-12 - The football field-size (50 x 100 m) Workshop will have equipment for machining, welding and testing, and a large "goliath" crane capable of travelling the facility's full length.
From the PF rooftop
2013-06-12 - The Poloidal Field Winding Facility and the Cryostat Workshop, side by side on the platform, are the two structures on site that will house the assembly of components that are too large to travel from the Domestic Agencies.
Short ride by rail
2013-06-12 - The Cryostat Workshop, which will occupy the parcel of land in the foreground, will be only a hundred metres or so from the entrance to the Assembly Hall.
Four main sections
2013-06-06 - Four main cryostat sections (top lid, upper cylinder, lower cylinder and base) will be assembled in the Cryostat Workshop from 54 smaller segments shipped from India.
3,800 metric tons
2013-06-06 - 30 metres high, 30 metres wide, 3,800 tonnes—the °ÄÃÅÁùºÏ²Ê¸ßÊÖ cryostat will provide the super-cool, vacuum environment for the vacuum vessel and magnets.
Groundbreaking ceremony on 6 June
2013-06-06 - A large excavator symbolically scratches the earth on the site of the future Cryostat Workshop during a ground breaking ceremony in June. Since this small portion of the °ÄÃÅÁùºÏ²Ê¸ßÊÖ platform has been made available to the Indian Domestic Agency, it was natural to place the parcel-sized piece of India under the protection of Ganesha, the "Remover of Obstacles."
Les quatre sections du cryostat
- Compte tenu de sa taille et de son poids, le cryostat sera fabriqué par segments et sous-assemblé en quatre sections sur le site d'°ÄÃÅÁùºÏ²Ê¸ßÊÖ.