TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 CONT

In the monolithic type pebble bed reactor, the dimension of the reactor core diameter becomes large, and nuclear control for a large-sized reactor having a large output scale is insufficient in a cooled state using only control elements(control rod, boron sphere) inserted into the reflector region. Furthermore, a reactor core control rod, which is forcibly inserted directly into the reactor core, is required in addition to the control elements inserted into the reflector region by gravity drop only. Moreover, cases have been reported that fuel spheres are broken if the control rod is inserted forcibly into the core because the pebble reactor core is full of fuel spheres accumulated inside the reactor core, which causes a serious drawback.  1, record 1, English, - pebble%20bed%20reactor%20core

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 CONT

Dans un HTR [réacteur à haute température], le débit principal d'hélium (plus de 90 % du débit total) sert à refroidir le combustible et le modérateur, qui fournissent respectivement environ 90 % et 10 % de la puissance thermique du cœur. Les débits dérivés refroidissent les barres de contrôle et les structures latérales, dont le réflecteur. Dans un cœur à boulets, le réglage fin du débit par zone radiale de puissance n'est pas possible de par la conception.  1, record 1, French, - c%26oelig%3Bur%20%C3%A0%20boulets

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 CONT

A nuclear fuel rod assembly support structure has top and bottom end pieces, and a plurality of fuel rod spacer grids and control-rod guide tubes having top and bottom ends respectively fastened to the top and bottom end pieces to hold these pieces interspaced, the guide tubes being inserted... through the openings in the spacer grids and the latter being positioned between the end pieces of the support structure.  1, record 2, English, - end%20piece

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 CONT

Dans les conceptions REP [réacteur à eau pressurisée] hors VVER, les grilles sont des emboîtements carrés de tôles. Leur fonction première est de positionner latéralement et axialement les crayons combustibles. Cette fonction est le plus souvent assurée par un système de ressorts et de bossettes [...] qui permet d'accommoder les dilatations thermiques et le grandissement induit par l'irradiation. [...] Les embouts, ou pièces d'extrémités, sont des éléments plus massifs). Situés hors de la partie active du cœur, leur transparence aux neutrons n'est pas nécessaire. Ils sont réalisés principalement en acier inoxydable soit par usinage et soudage de barres forgées et de tôles épaisses, soit par des gammes mixtes alliant ébauches moulées et usinage.  1, record 2, French, - embout

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 CONT

Method of installing a sleeve within an instrumentation tube of a nuclear fuel assembly. A spacer sleeve is installed within an instrumentation tube of a nuclear fuel assembly comprising two end nozzles connected by tie rods and a plurality of fuel rod supporting grids distributed at axial intervals along the tie rods. The instrumentation tube has a first end received in an initially blind bore formed in one of the end nozzles and communicating with the outside by a coolant restriction.  1, record 3, English, - instrumentation%20tube

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 CONT

Systèmes de contrôle et de protection. Ils utilisent des chambres d'ionisation (4 dans le réflecteur et 24 dans le réservoir de protection à l'extérieur du cœur), ainsi que 24 chambres à fission localisées dans le tube d'instrumentation de certains assemblages combustible.  1, record 3, French, - tube%20d%27instrumentation

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 DEF

A fuel rod which is temporarily inserted inside a nuclear reactor core in order to overcome the slow-down of radioactivity due to the development of neutron poison in the reactor.  2, record 4, English, - booster%20rod

Record number: 4, Textual support number: 1 CONT

A further novel aspect of the present invention over the prior art, which is a highly desirable feature in certain situations, is the capability of providing a string of fuel bundles such as on a booster rod, wherein groups of rods or elements from the radially inner and radially outer rows of elements may be selectively connected in mismatched relation.  3, record 4, English, - booster%20rod

Record number: 4, Textual support number: 1 OBS

booster rod: term extracted from the “Glossaire de l’énergie nucléaire” and reproduced with permission of the Organisation for Economic Co-operation and Development.  2, record 4, English, - booster%20rod

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 DEF

Barre de combustible insérée temporairement dans le coeur d'un réacteur nucléaire pour surmonter la baisse de réactivité due à la formation de poisons neutroniques dans le réacteur.  2, record 4, French, - barre%20de%20dopage

Record 4,  Textual support,  Spanish

Record 6,  Textual support,  English

Record number: 6, Textual support number: 1 CONT

The present invention relates to a modular nuclear fuel element, which can be adapted by an assembly system allowing it to be used in different nuclear power plants with horizontal and vertical cooling channels. The module is a cluster of parallel fuel rods mounted as circular concentric crowns and supported by a structural system. It has a single diameter fuel rod array where the ratio of the heat transfer area to the transverse rod area is higher than 330. It also has self-supporting fuel element spacer grids, which are collapsible sheaths attached to them with fewer than 13 welded end stoppers.  2, record 6, English, - fuel%20element%20spacer%20grid

Record 6,  Textual support,  French

Record 6,  Textual support,  Spanish

Record 7,  Textual support,  English

Record number: 7, Textual support number: 1 DEF

A rod used in the fuel channel of some nuclear reactors for transmitting an axial thrust.  2, record 7, English, - thrust%20rod

Record 7,  Textual support,  French

Record number: 7, Textual support number: 1 DEF

Tige logée dans le canal de combustible de certains réacteurs nucléaires et utilisée pour transmettre une poussée axiale.  2, record 7, French, - %C3%A9p%C3%A9e

Record number: 7, Textual support number: 1 CONT

L’EDS (entreposage des déchets solides) est un ouvrage constitué de 500 m³ de béton, comportant trois alvéoles qui étaient destinées à l’entreposage avant évacuation de pièces solides irradiantes provenant principalement du bloc réacteur : barres de contrôle, épées, bouchons thermiques, filtres de résines […]  3, record 7, French, - %C3%A9p%C3%A9e

Record 7,  Textual support,  Spanish

Record 8,  Textual support,  English

Record number: 8, Textual support number: 1 DEF

The loading of nuclear fuel pellets in a fuel rod.  2, record 8, English, - fuel%20rod%20loading

Record 8,  Textual support,  French

Record number: 8, Textual support number: 1 DEF

Pour un réacteur à eau sous pression (REP), ensemble des opérations au cours desquelles le combustible nucléaire sous forme de pastilles est introduit dans un crayon.  2, record 8, French, - crayonnage

Record number: 8, Textual support number: 1 OBS

D’après le Dictionnaire des sciences et techniques nucléaires (CEA), dans le cas des autres modèles de réacteurs, cette opération est dénommée «gainage».  2, record 8, French, - crayonnage

Record 8,  Textual support,  Spanish

Record 9,  Textual support,  English

Record number: 9, Textual support number: 1 DEF

... the tube of material that houses the nuclear fuel pellets and provides the containment of radioactive species produced during fission.  2, record 9, English, - fuel%20cladding%20tube

Record number: 9, Textual support number: 1 CONT

Disclosed herein is a zirconium alloy nuclear fuel cladding tube for use in nuclear fuel rods of a nuclear reactor. The nuclear fuel cladding tube comprises an elongated hollow metal tube for accommodating a nuclear fuel and a metal oxide film formed on the outer surface of the metal tube wherein the metal is a zirconium alloy and the oxide film has a thickness of 0.5~3.7 µm.  1, record 9, English, - fuel%20cladding%20tube

Record number: 9, Textual support number: 2 CONT

A fuel rod for a nuclear reactor fuel assembly includes a cladding tube and a plurality of fuel pellets contained in the tube and composed of fissile material, such as uranium dioxide, having a single enrichment of U-235. At least some of the fuel pellets have an annular configuration. Some of the annular fuel pellets have an annulus of a first size, whereas other... annular fuel pellets have an annulus of a second size different from the first size.  3, record 9, English, - fuel%20cladding%20tube

Record 9,  Textual support,  French

Record number: 9, Textual support number: 1 CONT

Matériaux de gainage des réacteurs à eau [...] Concernant les tubes de gainage, ses principales fonctions sont de divers ordres : assurer le maintien de la colonne combustible; isoler le combustible du fluide caloporteur pour le protéger de son action corrosive; évacuer l'énergie; assurer le confinement des produits de fission.  2, record 9, French, - tube%20de%20gainage%20de%20combustible

Record number: 9, Textual support number: 2 CONT

Dans un combustible pour réacteur à eau légère la matière fissile se présente sous forme de petits cylindres en oxyde d'uranium fritté dits «pastilles». Un certain nombre de ces pastilles est empilé dans un tube - dit tube de gainage ou gaine - scellé aux deux extrémités par des bouchons soudés afin d'isoler la matière fissile du milieu extérieur; cet ensemble forme ce qu'on appelle un crayon combustible.  2, record 9, French, - tube%20de%20gainage%20de%20combustible

Record 9,  Textual support,  Spanish

Record 10,  Textual support,  English

Record number: 10, Textual support number: 1 CONT

Shutdown system for a nuclear reactor … Seven fuel and control assemblies are also employed in the reactor core. Assemblies are substantially similar to fuel rods, but for the addition of a cadmium rod jacketed in corrosion-resistant metal, which addition serves as a control rod. The control rod of each assembly is located within [the] thimble and essentially replaces the assembly of fuel rods. Six of the seven fuel and control assemblies are located around the three concentric circles of [the] reactor core and serve as safety rods.  1, record 10, English, - control%20assembly

Record 10,  Textual support,  French

Record number: 10, Textual support number: 1 CONT

Assemblages de contrôle. Le réglage et l’arrêt du réacteur sont assurés par la manœuvre d’éléments absorbants; ces éléments sont constitués par des grappes d’aiguilles en carbure de bore enrichi, gainées d’acier austénitique, se déplaçant dans un tube analogue aux tubes hexagonaux des assemblages combustibles et permettant leur refroidissement par le sodium.  1, record 10, French, - assemblage%20de%20contr%C3%B4le

Record 10,  Textual support,  Spanish

Record 11,  Textual support,  English

Record number: 11, Textual support number: 1 CONT

Spacer grids in a nuclear fuel assembly are used to support fuel rods for maintaining proper spacing, to provide proper flow mixing and to maintain core coolable geometry.  1, record 11, English, - spacer%20grid

Record number: 11, Textual support number: 1 OBS

The spacer grid is formed in the shape of a lattice with intersecting lattice members defining a plurality of cells, most of which respectively support the nuclear fuel rods. The remaining cells support nuclear control rod guide tubes and instrumentation thimbles.  1, record 11, English, - spacer%20grid

Record 11,  Textual support,  French

Record number: 11, Textual support number: 1 CONT

Chaque assemblage combustible, dont la longueur totale est de 10,015 m, comprend deux demi-éléments de 3,60 m, séparés par une entretoise de 20 mm. Ils sont montés sur un tube central en Zr- 2%Nb, de 15 mm de diamètre, servant à la manutention. Chacun d’eux est constitué de 18 crayons combustibles chargés de pastilles en UO₂ enrichi initialement à 1,8 % en²³⁵U (ultérieurement, deux enrichissements ont été utilisés : 2 et 2,4 %). Une grille d’extrémité en Zr-2%Nb et 10 grilles d’espacement en acier inoxydable complètent l’architecture de l’assemblage combustible qui se présente sous forme cylindrique.  1, record 11, French, - grille%20d%26rsquo%3Bespacement

Record 11,  Textual support,  Spanish

Record 12,  Textual support,  English

Record number: 12, Textual support number: 1 DEF

The scanning of a fuel rod in a nuclear reactor for gamma activity by moving the rod past a slit in a lead block; photons emerging from the slit are detected by a scintillation spectrometer and recorded as a function of rod position.  1, record 12, English, - gamma%20scanning

Record 12,  Textual support,  French

Record number: 12, Textual support number: 1 CONT

Le banc de scrutation gamma [...] Tous les crayons combustibles irradiés dans un dispositif expérimental à OSIRIS subissent une neutronographie avant et après irradiation ce qui permet de voir les modifications de l'état du combustible et l'effet de l'irradiation.  3, record 12, French, - scrutation%20gamma

Record 12,  Textual support,  Spanish

Record 13,  Textual support,  English

Record number: 13, Textual support number: 1 CONT

A fuel rod for a nuclear reactor fuel assembly includes a cladding tube and a plurality of fuel pellets contained in the tube and composed of fissile material, such as uranium dioxide, having a single enrichment of U-235. At least some of the fuel pellets have an annular configuration. Some of the annular fuel pellets have an annulus of a first size, whereas other... annular fuel pellets have an annulus of a second size different from the first size.  1, record 13, English, - cladding%20tube

Record 13,  Textual support,  French

Record number: 13, Textual support number: 1 CONT

Dans un combustible pour réacteur à eau légère la matière fissile se présente sous forme de petits cylindres en oxyde d'uranium fritté dits «pastilles». Un certain nombre de ces pastilles est empilé dans un tube - dit tube de gainage ou gaine - scellé aux deux extrémités par des bouchons soudés afin d'isoler la matière fissile du milieu extérieur; cet ensemble forme ce qu'on appelle un crayon combustible.  1, record 13, French, - tube%20de%20gainage

Record 13,  Textual support,  Spanish

Record 14,  Textual support,  English

Record number: 14, Textual support number: 1 CONT

In the fabrication of a nuclear fuel assembly, the fuel rods are loaded into a fuel assembly skeleton. The fuel assembly skeleton consists of the guide thimbles attached to the grids. Each grid cell has springs and dimples which laterally support the fuel rod to be loaded therein.  1, record 14, English, - dimple

Record 14,  Textual support,  French

Record 14,  Textual support,  Spanish

Record 15,  Textual support,  English

Record number: 15, Textual support number: 1 CONT

The present invention relates to a fuel rod for a nuclear plant and a plenum spring arranged to be provided in a fuel rod. The fuel rod comprises a cladding tube sealed at its ends by end plugs, a plurality of fuel pellets stacked on each other inside the cladding tube such that they form a column of pellets and said plenum spring arranged to hold with a spring force the column of pellets against the lower second end of the cladding tube during operation.  1, record 15, English, - plenum

Record 15,  Textual support,  French

Record number: 15, Textual support number: 1 CONT

Le volume libre interne au crayon, ou espace laissé libre pour les gaz de fission, est essentiellement constitué du plenum (la partie supérieure du crayon dans lequel se trouve le ressort) car le jeu radial combustible-gaine se referme pendant la première partie de l'irradiation.  1, record 15, French, - plenum

Record 15,  Textual support,  Spanish

Record 16,  Textual support,  English

Record number: 16, Textual support number: 1 CONT

Prior art fuel elements used in nuclear reactors can be divided into two general classes--flat plate fuel elements and cylindrical rod fuel elements. A requirement for plate fuel elements is that the fuel be metallurgically bonded to the cladding. Fuel elements of this type are conventionally brazed in parallel relation between two side plates.  1, record 16, English, - plate%20fuel%20element

Record 16,  Textual support,  French

Record 16,  Textual support,  Spanish

Record 17,  Textual support,  English

Record 17,  Textual support,  French

Record number: 17, Textual support number: 1 OBS

Pas d'autre terme recommandé par l'INSEE [Institut national de la statistique et des études économiques].  1, record 17, French, - barre%20de%20combustible%20nucl%C3%A9aire

Record number: 17, Textual support number: 2 OBS

Source(s) : Traduction de l'ONU [Organisation des Nations Unies].  1, record 17, French, - barre%20de%20combustible%20nucl%C3%A9aire

Record 17,  Textual support,  Spanish

Record 18,  Textual support,  English

Record number: 18, Textual support number: 1 CONT

each fuel rod(of the thermionic nuclear reactor) contains seven caesium converter cells cm. long...  1, record 18, English, - caesium%20converter%20cell

Record 18,  Textual support,  French

Record 18,  Textual support,  Spanish