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NUCLEAR CIRCUIT [14 records]
Record 1 - internal organization data 2013-10-02
Record 1, English
Record 1, Subject field(s)
- Nuclear Power Stations
- Nuclear Fission Reactors
- Radiation Protection
Record 1, Main entry term, English
- safety circuit
1, record 1, English, safety%20circuit
correct, standardized
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
A logic circuit designed to receive information from various assemblies, measuring the conditions of a nuclear reactor and able to initiate automatic action of one or several safety members in order to ensure integrity of the nuclear reactor. 1, record 1, English, - safety%20circuit
Record number: 1, Textual support number: 1 OBS
safety circuit: term and definition standardized by ISO in 1997. 2, record 1, English, - safety%20circuit
Record 1, French
Record 1, Domaine(s)
- Centrales nucléaires
- Réacteurs nucléaires de fission
- Radioprotection
Record 1, Main entry term, French
- circuit de sécurité
1, record 1, French, circuit%20de%20s%C3%A9curit%C3%A9
correct, masculine noun, standardized
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Circuit logique conçu pour recevoir des informations de divers ensembles de mesure donnant l'état d'un réacteur nucléaire, et susceptible d'amorcer l'action automatique d'un ou plusieurs éléments de sûreté, en vue d'assurer l'intégrité du réacteur nucléaire. 1, record 1, French, - circuit%20de%20s%C3%A9curit%C3%A9
Record number: 1, Textual support number: 1 OBS
circuit de sécurité : terme et définition normalisés par l'ISO en 1997. 2, record 1, French, - circuit%20de%20s%C3%A9curit%C3%A9
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2010-11-26
Record 2, English
Record 2, Subject field(s)
- Electrical Engineering
- Radiological Physics (Theory and Application)
Record 2, Main entry term, English
- pile-up rejector circuit
1, record 2, English, pile%2Dup%20rejector%20circuit
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
- pile-up rejection system 2, record 2, English, pile%2Dup%20rejection%20system
correct
- pile-up rejector 1, record 2, English, pile%2Dup%20rejector
correct
Record 2, Textual support, English
Record number: 2, Textual support number: 1 CONT
[Nuclear radiation detector. ] Pile-Up Rejection. If two pulses arrive within the so-called measurement time(peaking time) the output pulse will have a distorted amplitude. The pile-up rejector circuit is used to prevent the measurement of these distorted pulses. The pile-up rejector is implemented by adding a fast pulse-shaping amplifier with a very short shaping time constant in parallel with the slow spectroscopy amplifier. 1, record 2, English, - pile%2Dup%20rejector%20circuit
Record 2, Key term(s)
- pileup rejector circuit
- pileup rejection system
- pileup rejector
Record 2, French
Record 2, Domaine(s)
- Électrotechnique
- Physique radiologique et applications
Record 2, Main entry term, French
- circuit anti-empilement
1, record 2, French, circuit%20anti%2Dempilement
correct, masculine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
- circuit antiempilement 1, record 2, French, circuit%20antiempilement
masculine noun
Record 2, Textual support, French
Record number: 2, Textual support number: 1 CONT
[Détecteur de rayonnements nucléaires.] Circuit anti-empilement […] : si le temps séparant deux événements est plus court que la durée du signal en sortie d’amplificateur, ces deux signaux vont s’empiler. Pour réduire ce phénomène, on peut diminuer les constantes de temps mais on élargit la bande passante et on diminue le rapport signal/bruit. Par ailleurs avec des constantes de temps qui ne seraient plus assez grandes devant le temps de montée du signal issu du pré-amplificateur, le défaut balistique n’est plus constant. Le rôle du circuit anti-empilement est de rejeter le signal si un deuxième événement survient dans un temps inférieur à la durée de l’impulsion. 1, record 2, French, - circuit%20anti%2Dempilement
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 2009-11-09
Record 3, English
Record 3, Subject field(s)
- Nuclear Plant Safety
Record 3, Main entry term, English
- passive safeguard system
1, record 3, English, passive%20safeguard%20system
correct
Record 3, Abbreviations, English
Record 3, Synonyms, English
Record 3, Textual support, English
Record number: 3, Textual support number: 1 CONT
It is an object of the invention to couple the normal residual heat removal system of a pressurized water nuclear reactor to a passive safeguard system which depressurizes the reactor coolant circuit when adding coolant, in order to preclude disruptive final depressurization steps which may be unnecessary under the circumstances. 1, record 3, English, - passive%20safeguard%20system
Record 3, French
Record 3, Domaine(s)
- Sûreté des centrales nucléaires
Record 3, Main entry term, French
- système de sauvegarde passif
1, record 3, French, syst%C3%A8me%20de%20sauvegarde%20passif
correct, masculine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
Record 3, Textual support, French
Record number: 3, Textual support number: 1 CONT
On notera également chez les constructeurs une tendance vers des concepts de systèmes de sauvegarde passifs ou hybrides, ce qui leur permet d'afficher des probabilités très basses d'accidents graves. 1, record 3, French, - syst%C3%A8me%20de%20sauvegarde%20passif
Record 3, Spanish
Record 3, Textual support, Spanish
Record 4 - internal organization data 2009-10-26
Record 4, English
Record 4, Subject field(s)
- Nuclear Plant Safety
- Nuclear Physics
Record 4, Main entry term, English
- minor breach
1, record 4, English, minor%20breach
correct
Record 4, Abbreviations, English
Record 4, Synonyms, English
Record 4, Textual support, English
Record number: 4, Textual support number: 1 CONT
A second cooling function is provided for safety reasons, to deal with the possibility of a loss of primary coolant circuit function during operation of the reactor. A breach in the primary coolant circuit, for example, could allow the core to overheat, resulting in damage to the nuclear fuel. A pressurizer arrangement injects additional coolant into the circuit to maintain operational pressure and to replace coolant that may be lost through a minor breach or leak in the coolant circuit. 1, record 4, English, - minor%20breach
Record 4, French
Record 4, Domaine(s)
- Sûreté des centrales nucléaires
- Physique nucléaire
Record 4, Main entry term, French
- petite brèche
1, record 4, French, petite%20br%C3%A8che
correct, feminine noun
Record 4, Abbreviations, French
Record 4, Synonyms, French
Record 4, Textual support, French
Record number: 4, Textual support number: 1 CONT
Petite brèche. L'accident de perte de réfrigérant primaire par petite brèche est supposé être initié : - soit par la rupture partielle d'une grosse tuyauterie primaire; - soit par la rupture d'une petite tuyauterie branchée au circuit primaire; - soit par une soupape de sûreté restée coincée ouverte après fonctionnement (cas de l'accident de Three Mile Island). 1, record 4, French, - petite%20br%C3%A8che
Record 4, Spanish
Record 4, Textual support, Spanish
Record 5 - internal organization data 2009-10-26
Record 5, English
Record 5, Subject field(s)
- Nuclear Plant Safety
- Nuclear Physics
Record 5, Main entry term, English
- major breach
1, record 5, English, major%20breach
correct
Record 5, Abbreviations, English
Record 5, Synonyms, English
Record 5, Textual support, English
Record number: 5, Textual support number: 1 CONT
A second cooling funtion is provided for safety reasons, to deal with the possibility of a loss of primary coolant circuit function during operation of the reactor. A breach in the primary coolant circuit, for example, could allow the core to overheat, resulting in damage to the nuclear fuel. A pressurizer arrangement injects additional coolant into the circuit to maintain operational pressure and to replace coolant that may be lost through a minor breach or leak in the coolant circuit. Various techniques are known for cooling the reactor core in the event of a major breach such as the rupture of a conduit in the primary coolant circuit. Neutron absorbing control rods can be inserted into the fuel array quickly to damp the nuclear reaction, for example when the sensed coolant pressure drops. 1, record 5, English, - major%20breach
Record 5, French
Record 5, Domaine(s)
- Sûreté des centrales nucléaires
- Physique nucléaire
Record 5, Main entry term, French
- grosse brèche
1, record 5, French, grosse%20br%C3%A8che
correct, feminine noun
Record 5, Abbreviations, French
Record 5, Synonyms, French
Record 5, Textual support, French
Record number: 5, Textual support number: 1 CONT
Grosse brèche. Ce type d'accident de perte de réfrigérant primaire (APRP) est supposé initié par la rupture franche et complète d'une branche froide du circuit primaire (dite rupture guillotine). Le fluide s'écoule alors par les deux tronçons ouverts. La décompression est rapide : l'écoulement est homogène et les phénomènes gravitaires ne jouent qu'un rôle marginal. 1, record 5, French, - grosse%20br%C3%A8che
Record 5, Spanish
Record 5, Textual support, Spanish
Record 6 - internal organization data 2009-10-13
Record 6, English
Record 6, Subject field(s)
- Nuclear Fission Reactors
Record 6, Main entry term, English
- pressurized water reactor
1, record 6, English, pressurized%20water%20reactor
correct
Record 6, Abbreviations, English
- PWR 2, record 6, English, PWR
correct
Record 6, Synonyms, English
Record 6, Textual support, English
Record number: 6, Textual support number: 1 DEF
A nuclear reactor using water as the moderator and coolant, in which the system is maintained at a high pressure to prevent boiling. The water is circulated through a heat exchanger to generate steam in a secondary circuit. 1, record 6, English, - pressurized%20water%20reactor
Record number: 6, Textual support number: 1 CONT
By far the most common civilian power reactor is the pressurized water reactor (PWR). ... The water passes downward through an annulus between the reactor core and the pressure vessel and then flows up over the fuel elements. It then passes through a series of pipes, which pass to the steam generator. The light coolant also acts as the moderator for this reactor. 3, record 6, English, - pressurized%20water%20reactor
Record 6, French
Record 6, Domaine(s)
- Réacteurs nucléaires de fission
Record 6, Main entry term, French
- réacteur à eau sous pression
1, record 6, French, r%C3%A9acteur%20%C3%A0%20eau%20sous%20pression
correct, masculine noun
Record 6, Abbreviations, French
- REP 2, record 6, French, REP
correct, masculine noun
Record 6, Synonyms, French
- réacteur REP 3, record 6, French, r%C3%A9acteur%20REP
correct, masculine noun
- réacteur à eau pressurisée 5, record 6, French, r%C3%A9acteur%20%C3%A0%20eau%20pressuris%C3%A9e
avoid, masculine noun
Record 6, Textual support, French
Record number: 6, Textual support number: 1 DEF
Réacteur nucléaire modéré et refroidi par de l'eau ordinaire, maintenue liquide dans le coeur grâce à une pression appropriée dans les conditions normales de fonctionnement. 6, record 6, French, - r%C3%A9acteur%20%C3%A0%20eau%20sous%20pression
Record number: 6, Textual support number: 1 CONT
Dans les réacteurs à eau sous pression, l'eau qui circule dans le coeur est maintenue à une pression supérieure à 150 bars et elle sort du réacteur à une température supérieure à 300 °C. Elle est envoyée dans des générateurs de vapeur où elle échange sa chaleur avec l'eau d'un second circuit, qu'elle vaporise. 4, record 6, French, - r%C3%A9acteur%20%C3%A0%20eau%20sous%20pression
Record number: 6, Textual support number: 1 OBS
Le terme «réacteur à eau pressurisée» utilisé pour désigner ce type de réacteur est impropre, le mot «pressurisé» n'étant pas admis par l'Académie des Sciences. 7, record 6, French, - r%C3%A9acteur%20%C3%A0%20eau%20sous%20pression
Record 6, Spanish
Record 6, Campo(s) temático(s)
- Reactores nucleares de fisión
Record 6, Main entry term, Spanish
- reactor de agua a presión
1, record 6, Spanish, reactor%20de%20agua%20a%20presi%C3%B3n
correct, masculine noun
Record 6, Abbreviations, Spanish
- PWR 2, record 6, Spanish, PWR
masculine noun
Record 6, Synonyms, Spanish
Record 6, Textual support, Spanish
Record number: 6, Textual support number: 1 DEF
Reactor nuclear de agua ligera o normal que utiliza uranio enriquecido como combustible y agua ligera como moderador y refrigerante, mantenida a 150 atmósferas en recipientes de acero. 2, record 6, Spanish, - reactor%20de%20agua%20a%20presi%C3%B3n
Record 7 - external organization data 2007-09-25
Record 7, English
Record 7, Subject field(s)
- Nuclear Science and Technology
- Nuclear Fission Reactors
- Compartment - Canadian Nuclear Safety Commission
Record 7, Main entry term, English
- heat exchanger
1, record 7, English, heat%20exchanger
correct
Record 7, Abbreviations, English
Record 7, Synonyms, English
Record 7, Textual support, English
Record number: 7, Textual support number: 1 CONT
"Primary heat transport system" means that system of components which permit the transfer of heat from the fuel in the reactor to the steam generators or other heat exchangers employing secondary cooling. 2, record 7, English, - heat%20exchanger
Record number: 7, Textual support number: 2 CONT
Heat exchangers(steam generators) especially designed or prepared for use in the primary coolant circuit of a nuclear reactor. [Nuclear Non-Proliferation Import and Export Control Regulations] 3, record 7, English, - heat%20exchanger
Record 7, French
Record 7, Domaine(s)
- Sciences et techniques nucléaires
- Réacteurs nucléaires de fission
- Tiroir - Commission canadienne de sûreté nucléaire
Record 7, Main entry term, French
- échangeur de chaleur
1, record 7, French, %C3%A9changeur%20de%20chaleur
correct, masculine noun
Record 7, Abbreviations, French
Record 7, Synonyms, French
- thermoéchangeur 2, record 7, French, thermo%C3%A9changeur
masculine noun
Record 7, Textual support, French
Record number: 7, Textual support number: 1 CONT
circuit caloporteur primaire : Ensemble des composants qui permet le transfert de la chaleur du combustible dans le réacteur jusqu'aux générateurs de vapeur ou jusqu'à d'autres échangeurs de chaleur utilisant un système de refroidissement secondaire. 3, record 7, French, - %C3%A9changeur%20de%20chaleur
Record number: 7, Textual support number: 2 CONT
Échangeurs de chaleur (générateurs de vapeur) spécialement conçus ou préparés pour utilisation dans le circuit de refroidissement primaire d'un réacteur nucléaire. [Règlement sur le contrôle de l'importation et de l'exportation aux fins de la non-prolifération nucléaire] 4, record 7, French, - %C3%A9changeur%20de%20chaleur
Record 7, Spanish
Record 7, Campo(s) temático(s)
- Ciencia y tecnología nucleares
- Reactores nucleares de fisión
- Compartimiento - Comisión Canadiense de Seguridad Nuclear
Record 7, Main entry term, Spanish
- intercambiador de calor
1, record 7, Spanish, intercambiador%20de%20calor
correct, masculine noun
Record 7, Abbreviations, Spanish
Record 7, Synonyms, Spanish
- cambiador de calor 2, record 7, Spanish, cambiador%20de%20calor
correct, masculine noun
- termointercambiador 3, record 7, Spanish, termointercambiador
masculine noun
Record 7, Textual support, Spanish
Record number: 7, Textual support number: 1 CONT
En las centrales nucleares se usan cambiadores de calor, entre otras razones, porque el fluido que se calienta en el seno del reactor es muy radiactivo. Su calor sirve en el cambiador para vaporizar el agua del circuito secundario, cuyo vapor presenta entonces escasa radiactividad y puede utilizarse inocuamente en el exterior para accionar los turboalternadores. 2, record 7, Spanish, - intercambiador%20de%20calor
Record 8 - internal organization data 2001-09-27
Record 8, English
Record 8, Subject field(s)
- Chemistry
- Geochemistry
- Radioactive Ores (Mining)
Record 8, Main entry term, English
- uranium extraction
1, record 8, English, uranium%20extraction
correct
Record 8, Abbreviations, English
Record 8, Synonyms, English
Record 8, Textual support, English
Record number: 8, Textual support number: 1 CONT
Initially, the [Port Hope] plant processed high-grade uranium ores to recover radium. A by-product of the refining process was uranium oxide, and, with increasing interest in nuclear energy, the emphasis switched to uranium production. By 1942, uranium extraction from ores had become the primary process and radium refining ceased in 1953. The radium circuit was dismantled in 1955, and replaced by a uranium refining circuit, which processed uranium concentrates(yellowcake) rather than uranium ores.... a production facility was added to convert refined uranium oxide to uranium hexafluoride for export. The hexafluoride conversion facility was expanded in 1983... 1, record 8, English, - uranium%20extraction
Record 8, French
Record 8, Domaine(s)
- Chimie
- Géochimie
- Minerais radioactifs (Mines métalliques)
Record 8, Main entry term, French
- extraction de l'uranium
1, record 8, French, extraction%20de%20l%27uranium
correct, feminine noun
Record 8, Abbreviations, French
Record 8, Synonyms, French
Record 8, Textual support, French
Record number: 8, Textual support number: 1 CONT
Extraction de l'uranium. L'uranium est présent dans de nombreux minerais, mais à des teneurs très faibles [...] On exploite les gisements où cette teneur atteint quelque 1/100 [...] Après un tri radiométrique des roches extraites, les principales étapes du traitement sont une préparation mécanique (concassage, broyage), une mise en solution de l'uranium par attaque acide [...] ou basique [...]. La pulpe sortant de cette attaque subit une séparation solide-liquide qui fournit une liqueur contenant l'uranium qu'on purifie (par échange d'ions), puis dont on fait précipiter l'uranium essentiellement sous forme d'uranate. Au terme de ces traitements conduits sur le lieu d'extraction, on obtient des concentrés à 60-70 % d'uranium. Ces concentrés subissent ensuite un raffinage qui comprend deux phases, la purification et l'élaboration finale [...] 1, record 8, French, - extraction%20de%20l%27uranium
Record 8, Spanish
Record 8, Campo(s) temático(s)
- Química
- Geoquímica
- Minerales radioactivos (Minas metálicas)
Record 8, Main entry term, Spanish
- extracción del uranio
1, record 8, Spanish, extracci%C3%B3n%20del%20uranio
correct, feminine noun
Record 8, Abbreviations, Spanish
Record 8, Synonyms, Spanish
Record 8, Textual support, Spanish
Record 9 - internal organization data 1996-06-06
Record 9, English
Record 9, Subject field(s)
- Radioactive Ores (Mining)
Record 9, Main entry term, English
- uranium ore
1, record 9, English, uranium%20ore
correct
Record 9, Abbreviations, English
Record 9, Synonyms, English
Record 9, Textual support, English
Record number: 9, Textual support number: 1 CONT
Initially, the [Port Hope] plant processed high-grade uranium ores to recover radium. A by-product of the refining process was uranium oxide, and, with increasing interest in nuclear energy, the emphasis switched to uranium production. By 1942, uranium extraction from ores had become the primary process and radium refining ceased in 1953. The radium circuit was dismantled in 1955, and replaced by a uranium refining circuit, which processed uranium concentrates(yellowcake) rather than uranium ores.... a production facility was added to convert refined uranium oxide to uranium hexafluoride for export. The hexafluoride conversion facility was expanded in 1983.... 2, record 9, English, - uranium%20ore
Record 9, French
Record 9, Domaine(s)
- Minerais radioactifs (Mines métalliques)
Record 9, Main entry term, French
- minerai d'uranium
1, record 9, French, minerai%20d%27uranium
correct, masculine noun
Record 9, Abbreviations, French
Record 9, Synonyms, French
- minerai de l'uranium 2, record 9, French, minerai%20de%20l%27uranium
correct, masculine noun
Record 9, Textual support, French
Record number: 9, Textual support number: 1 CONT
«uranophane» : [...] très fréquente dans le minerai jaune d'uranium [...] 3, record 9, French, - minerai%20d%27uranium
Record number: 9, Textual support number: 2 CONT
L'uranium naturel est essentiellement composé de l'isotope fertile U 238, qui en représente plus de 99 % en masse, accompagné de l'isotope fissile U 235 (o,7 %). Leur désintégration radioactive entraîne la formation de descendants qui forment ainsi, avec leur père respectif, deux chaînes. Les minerais d'uranium contiennent tous les radionucléides, supposés en équilibre radioactif, de ces chaînes de décroissance. 4, record 9, French, - minerai%20d%27uranium
Record 9, Spanish
Record 9, Campo(s) temático(s)
- Minerales radioactivos (Minas metálicas)
Record 9, Main entry term, Spanish
- mineral de uranio
1, record 9, Spanish, mineral%20de%20uranio
correct, masculine noun
Record 9, Abbreviations, Spanish
Record 9, Synonyms, Spanish
Record 9, Textual support, Spanish
Record 10 - internal organization data 1996-06-06
Record 10, English
Record 10, Subject field(s)
- Radioactive Ores (Mining)
- Geochemistry
- Nuclear Physics
Record 10, Main entry term, English
- uranium refining circuit
1, record 10, English, uranium%20refining%20circuit
correct
Record 10, Abbreviations, English
Record 10, Synonyms, English
Record 10, Textual support, English
Record number: 10, Textual support number: 1 CONT
Initially, the [Port Hope]) plant processed high-grade uranium ores to recover radium. A by-product of the refining process was uranium oxide, and, with increasing interest in nuclear energy, the emphasis switched to uranium production. By 1942, uranium extraction from ores had become the primary process and radium refining ceased in 1953. The radium circuit was dismantled in 1955, and replaced by a uranium refining circuit, which processed uranium concentrates(yellowcake) rather than uranium ores.... a production facility was added to convert refined uranium oxide to uranium hexafluoride for export. 1, record 10, English, - uranium%20refining%20circuit
Record 10, French
Record 10, Domaine(s)
- Minerais radioactifs (Mines métalliques)
- Géochimie
- Physique nucléaire
Record 10, Main entry term, French
- circuit de raffinage de l'uranium
1, record 10, French, circuit%20de%20raffinage%20de%20l%27uranium
proposal, masculine noun
Record 10, Abbreviations, French
Record 10, Synonyms, French
Record 10, Textual support, French
Record number: 10, Textual support number: 1 OBS
Extraction de l'uranium. [...] Après un tri radiométrique des roches extraites, les principales étapes du traitement sont une préparation mécanique (concassage, broyage), une mise en solution de l'uranium par attaque acide [...] ou basique [...] La pulpe sortant de cette attaque subit une séparation solide-liquide qui fournit une liqueur contenant l'uranium qu'on purifie [...] puis dont on fait précipiter l'uranium essentiellement sous forme d'uranate. Au terme de ces traitements conduits sur le lieu d'extraction, on obtient des concentrés à 60-70 % d'uranium. Ces concentrés subissent ensuite un raffinage qui comprend deux phases, la purification et l'élaboration finale, exécutées dans une usine souvent éloignée du centre minier. 2, record 10, French, - circuit%20de%20raffinage%20de%20l%27uranium
Record 10, Spanish
Record 10, Campo(s) temático(s)
- Minerales radioactivos (Minas metálicas)
- Geoquímica
- Física nuclear
Record 10, Main entry term, Spanish
- circuito de refinación del uranio
1, record 10, Spanish, circuito%20de%20refinaci%C3%B3n%20del%20uranio
correct, masculine noun
Record 10, Abbreviations, Spanish
Record 10, Synonyms, Spanish
- circuito de purificación del uranio 2, record 10, Spanish, circuito%20de%20purificaci%C3%B3n%20del%20uranio
proposal, masculine noun
Record 10, Textual support, Spanish
Record 11 - internal organization data 1996-05-29
Record 11, English
Record 11, Subject field(s)
- Radioactive Ores (Mining)
- Nuclear Power Stations
- Atomic Physics
Record 11, Main entry term, English
- refining
1, record 11, English, refining
correct
Record 11, Abbreviations, English
Record 11, Synonyms, English
Record 11, Textual support, English
Record number: 11, Textual support number: 1 CONT
Initially, the [Port Hope] plant processed high-grade uranium ores to recover radium. A by-product of the refining process was uranium oxide, and, with increasing interest in nuclear energy, the emphasis switched to uranium production. By 1942, uranium extraction from ores had become the primary process and radium refining ceased in 1953. The radium circuit was dismantled in 1955, and replaced by a uranium refining circuit, which processed uranium concentrates(yellowcake) rather than uranium ores.... a production facility was added to convert refined uranium oxide to uranium hexafluoride for export. 1, record 11, English, - refining
Record 11, French
Record 11, Domaine(s)
- Minerais radioactifs (Mines métalliques)
- Centrales nucléaires
- Physique atomique
Record 11, Main entry term, French
- raffinage
1, record 11, French, raffinage
correct, masculine noun
Record 11, Abbreviations, French
Record 11, Synonyms, French
Record 11, Textual support, French
Record number: 11, Textual support number: 1 CONT
Le raffinage et la conversion constituent l'ensemble des opérations physico-chimiques grâce auxquelles l'uranium du concentré est transformé en UF6 destiné à l'enrichissement puis à la conversion en bioxyde, pour alimenter la filière eau légère uranium enrichi. 2, record 11, French, - raffinage
Record number: 11, Textual support number: 2 CONT
Extraction de l'uranium. [...] Après un tri radiométrique des roches extraites, les principales étapes du traitement sont une préparation mécanique (concassage, broyage), une mise en solution de l'uranium par attaque acide [...] ou basique [...]. La pulpe sortant de cette attaque subit une séparation solide-liquide qui fournit une liqueur contenant l'uranium qu'on purifie [...] puis dont on fait précipiter l'uranium essentiellement sous forme d'uranate. Au terme de ces traitements conduits sur le lieu d'extraction, on obtient des concentrés à 60-70 % d'uranium. Ces concentrés subissent ensuite un raffinage qui comprend deux phases, la purification et l'élaboration finale, exécutées dans une usine souvent éloignée du centre minier. 3, record 11, French, - raffinage
Record 11, Spanish
Record 11, Campo(s) temático(s)
- Minerales radioactivos (Minas metálicas)
- Centrales nucleares
- Física atómica
Record 11, Main entry term, Spanish
- refinación
1, record 11, Spanish, refinaci%C3%B3n
correct, feminine noun
Record 11, Abbreviations, Spanish
Record 11, Synonyms, Spanish
- purificación 2, record 11, Spanish, purificaci%C3%B3n
feminine noun
Record 11, Textual support, Spanish
Record 12 - internal organization data 1994-12-05
Record 12, English
Record 12, Subject field(s)
- Nuclear Fission Reactors
Record 12, Main entry term, English
- wet cooling tower 1, record 12, English, wet%20cooling%20tower
Record 12, Abbreviations, English
Record 12, Synonyms, English
Record 12, Textual support, English
Record number: 12, Textual support number: 1 CONT
A cooling tower basically consists of an air circuit and a water circuit leading to a heat exchange vessel in which the air and water are brought into contact. By a stack effect, i. e. by natural draft, the cooling tower shell provides air circulation. When, as is the case with the wet cooling towers at EDF thermal and nuclear plants, the air and water are placed in direct contact in the heat exchange vessel, the hot air escaping from the shell is saturated with steam : mixing with the colder outside air produces by steam condensation a plume whose structure is similar to a natural cloud. 1, record 12, English, - wet%20cooling%20tower
Record 12, French
Record 12, Domaine(s)
- Réacteurs nucléaires de fission
Record 12, Main entry term, French
- réfrigérant humide
1, record 12, French, r%C3%A9frig%C3%A9rant%20humide
correct, masculine noun
Record 12, Abbreviations, French
Record 12, Synonyms, French
Record 12, Textual support, French
Record number: 12, Textual support number: 1 CONT
Lorsque, ce qui est le cas des réfrigérants humides équipant les centrales thermiques et nucléaires d'EDF, l'air et l'eau sont mis en contact direct dans le corps d'échange, l'air chaud qui s'échappe de la coque est saturé de vapeur d'eau : le mélange avec l'air ambiant, plus froid, produit, par condensation de la vapeur, un panache dont la structure s'apparente à celle d'un nuage naturel. 1, record 12, French, - r%C3%A9frig%C3%A9rant%20humide
Record 12, Spanish
Record 12, Textual support, Spanish
Record 13 - internal organization data 1981-01-26
Record 13, English
Record 13, Subject field(s)
- Water Treatment (Water Supply)
- Equipment and Tools (Water Supply)
- Chemical Engineering
Record 13, Main entry term, English
- primary deionization system
1, record 13, English, primary%20deionization%20system
correct
Record 13, Abbreviations, English
Record 13, Synonyms, English
Record 13, Textual support, English
Record number: 13, Textual support number: 1 CONT
Mixed-bed exchangers are most frequently used either for finishing, following a primary deionization system, or when the raw water contains very few ions, as in the case of condensed water or nuclear tank water deionized in a closed circuit. 1, record 13, English, - primary%20deionization%20system
Record 13, French
Record 13, Domaine(s)
- Traitement des eaux
- Équipement et outillage (Alimentation en eau)
- Génie chimique
Record 13, Main entry term, French
- chaîne de déminéralisation primaire
1, record 13, French, cha%C3%AEne%20de%20d%C3%A9min%C3%A9ralisation%20primaire
correct, feminine noun
Record 13, Abbreviations, French
Record 13, Synonyms, French
Record 13, Textual support, French
Record number: 13, Textual support number: 1 CONT
Les échangeurs à lits mélangés sont le plus souvent utilisés soit en finition, après une chaîne de déminéralisation primaire soit lorsque l'eau brute est très peu chargée en ions (eaux condensées, eaux de piscines nucléaires déminéralisées en circuits fermés, etc.). 1, record 13, French, - cha%C3%AEne%20de%20d%C3%A9min%C3%A9ralisation%20primaire
Record 13, Spanish
Record 13, Textual support, Spanish
Record 14 - internal organization data 1981-01-26
Record 14, English
Record 14, Subject field(s)
- Atomic Physics
Record 14, Main entry term, English
- nuclear circuit 1, record 14, English, nuclear%20circuit
Record 14, Abbreviations, English
Record 14, Synonyms, English
Record 14, Textual support, English
Record number: 14, Textual support number: 1 OBS
Ion exchange substances (...) take the form of granules 0.3 - 1.2 mm in size. Powdered resins of between 5 and 30 microns, known as microresins have recently been introduced for certain special uses (treatment of condensates, waters from nuclear circuits). 1, record 14, English, - nuclear%20circuit
Record 14, French
Record 14, Domaine(s)
- Physique atomique
Record 14, Main entry term, French
- circuit nucléaire
1, record 14, French, circuit%20nucl%C3%A9aire
correct
Record 14, Abbreviations, French
Record 14, Synonyms, French
Record 14, Textual support, French
Record number: 14, Textual support number: 1 OBS
Les échangeurs d'ions (...) se présentent en granulés ayant des dimensions comprises entre 0.3 et 1.2 mm. On utilise depuis peu pour certains usages spéciaux (traitement de condensats, d'eaux de circuits nucléaires) des résines pulvérisées entre 5 et 30 microns, dites microrésines. 1, record 14, French, - circuit%20nucl%C3%A9aire
Record 14, Spanish
Record 14, Textual support, Spanish
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