TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 CONT

In the most common type of high temperature reactor(HTR) fuel, tiny particles of nuclear fuel are coated with three or four layers of coatings which are impenetrable to fission products up to a temperature of 2000 celsius. About 20, 000 particles, bonded with graphite are massed together to form a spherical fuel element with a diameter of about 6 centimeters. The high temperature reactor... might contain 100, 000 or more of these fuel elements.  5, record 1, English, - fuel%20pebble

Record number: 1, Textual support number: 2 CONT

The pebbles are ... designed to passively limit the amount of heat unleashed by the nuclear fission reactions that drive the reactor. The fissionable material is divided into groups of 100 million billion uranium-235 atoms scattered within a 0.5 mm sphere of uranium dioxide. That core is coated with four containment layers. ... Some 15,000 carbon-coated uranium dioxide kernels, looking like nuclear poppy seeds, are embedded in a tennis ball-size graphite and resin matrix. Graphite acts to slow the fission neutrons and so acts as an embedded moderator. The matrix is then encased in a 5 mm pure carbon shell, sintered, annealed, and machined to a uniform diameter of 6 cm.  2, record 1, English, - fuel%20pebble

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 CONT

Les particules [de combustible] sont agglomérées au moyen d'une matrice carbonée de manière à former des corps sphériques [...] aisément manipulables. [...] le combustible est sous forme de boulets de 60 mm de diamètre, ayant une écorce de 5 mm sans particule, chargés en vrac dans le cœur [du réacteur qui] est formé par un très grand nombre de boulets (675 000 pour [un réacteur] THTR [thorium high temperature reactor] de 300 MW de puissance électrique). L'ensemble de ces boulets est contenu dans une large trémie en graphite, faisant office de réflecteur, munie au sommet d'un couvercle de même matière, et d'un (ou plusieurs) trou d'évacuation des combustibles à la base.  2, record 1, French, - boulet

Record number: 1, Textual support number: 2 CONT

Chaque boulet mesure environ 60 mm de diamètre et renferme environ 11 500 particules. L'extérieur du boulet, sur 5 mm, ne contient pas de particule, renforçant ainsi le confinement des matières radioactives dans la matrice de graphite. Le cœur du réacteur sera constitué par un empilement de plusieurs centaines de milliers de boulets.  3, record 1, French, - boulet

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 CONT

Gas-cooled reactor systems. The high-temperature reactor(HTR) uses particle fuel able to withstand high temperatures, allowing for very high burn-up and graphite as a moderator. Helium is used as a coolant, allowing an output temperature of more than 850°C.  1, record 2, English, - particle%20fuel

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 CONT

[...] à la fin des années 1950, le concept de combustible à particules de taille millimétrique est le concept de référence des réacteurs à haute ou très haute température à caloporteur gaz (High or Very High Temperature gas cooled Reactor HTR/VHTR). La spécificité de ce combustible est qu'il est finement divisé, tout céramique (combustible et couches de revêtement) et micro-confiné (le confinement des actinides et des produits de fission se fait au plus près de la source), ces trois particularités combinées permettant à la fois l'accès aux hautes températures et à un haut niveau de sûreté.  1, record 2, French, - combustible%20%C3%A0%20particules

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 OBS

High Temperature Reactor(HTR). A nuclear reactor moderated by graphite and cooled by gas(helium). Can be refuelled without shut down(on load refuelling-OLR). The high temperature of the coolant results in a better thermodynamic efficiency.  4, record 3, English, - modular%20HTR

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 CONT

[...] le HTR modulaire [...] doit son nom à la possibilité qu'il offre de constituer une centrale avec un nombre de modules adapté aux besoins du moment. Quatre modules placés côte à côte constituent une centrale standard.  2, record 3, French, - r%C3%A9acteur%20modulaire%20%C3%A0%20haute%20temp%C3%A9rature

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 CONT

The coated particle fuels have been designed in the past for "high temperature reactors"(HTR). The interesting aspects of such fuel are :(i) the good thermal exchange between the gas coolant and the fuel as a result of the small fuel particles, and(ii) the retention of the fission products within the particle as a result of the tight coatings surrounding the fissile kernel flux conditions.  1, record 4, English, - coated%20particle%20fuel

Record 4,  Textual support,  French

Record 4,  Textual support,  Spanish

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 CONT

[The] image viewer displayed target images for human target recognition(HTR) and battle damage assessment(BDA). [The] image viewer allowed participants to input or revise the information associated with icons on the map including affiliation(e. g., friendly, enemy, neutral), type(e. g., tank, artillery), and status(e. g., suspected target, dead target).  1, record 5, English, - image%20viewer

Record 5,  Textual support,  French

Record 5,  Textual support,  Spanish

Record 6,  Textual support,  English

Record number: 6, Textual support number: 1 CONT

The ABR is the ratio of successful calls to total originating international calls. The ratio is the measure of effective international calls, reflects the performance of the total international network between the calling and called country and hence is the CCR for the entire international network or the probability of a call being successful.  2, record 6, English, - answer%20bid%20ratio

Record number: 6, Textual support number: 2 CONT

Part of the improved performance of automatic controls can be derived from the ability to distinguish between destinations that are easy-to-reach(ETR) and destinations that are hard-to-reach(HTR), i. e., destinations with a low answer bid ratio, and applying heavier controls to HTR destinations.  3, record 6, English, - answer%20bid%20ratio

Record 6,  Textual support,  French

Record 6,  Textual support,  Spanish