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NEUTRON POWER [26 records]
Record 1 - internal organization data 2024-12-11
Record 1, English
Record 1, Subject field(s)
- Scientific Instruments
- Nuclear Fission Reactors
- Atomic Physics
Record 1, Main entry term, English
- self-powered neutron detector
1, record 1, English, self%2Dpowered%20neutron%20detector
correct, standardized
Record 1, Abbreviations, English
- SPND 2, record 1, English, SPND
correct
Record 1, Synonyms, English
- collectron 3, record 1, English, collectron
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
A neutron detector in which an electric current is produced without the application of an external power source through the emission of beta particles by a short-lived radionuclide. 4, record 1, English, - self%2Dpowered%20neutron%20detector
Record number: 1, Textual support number: 1 OBS
self-powered neutron detector: term and definition standardized by ISO in 1997. 5, record 1, English, - self%2Dpowered%20neutron%20detector
Record number: 1, Textual support number: 2 OBS
collectron: term extracted from the “Glossaire de l’énergie nucléaire” and reproduced with permission of the Organisation for Economic Co-operation and Development. 5, record 1, English, - self%2Dpowered%20neutron%20detector
Record 1, French
Record 1, Domaine(s)
- Instruments scientifiques
- Réacteurs nucléaires de fission
- Physique atomique
Record 1, Main entry term, French
- collectron
1, record 1, French, collectron
correct, masculine noun, standardized
Record 1, Abbreviations, French
Record 1, Synonyms, French
- détecteur de neutrons auto-alimenté 2, record 1, French, d%C3%A9tecteur%20de%20neutrons%20auto%2Daliment%C3%A9
masculine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Détecteur de neutrons dans lequel le courant électrique est produit sans l'aide d'une source d'énergie extérieure, par l'émission de particules bêta par un radionucléide à vie courte. 3, record 1, French, - collectron
Record number: 1, Textual support number: 1 OBS
collectron : terme et définition normalisés par l'ISO en 1997. 4, record 1, French, - collectron
Record number: 1, Textual support number: 2 OBS
détecteur de neutrons auto-alimenté : terme extrait du «Glossaire de l’énergie nucléaire» et reproduit avec l’autorisation de l’Organisation de coopération et de développement économiques. 4, record 1, French, - collectron
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2017-04-13
Record 2, English
Record 2, Subject field(s)
- Nuclear Physics
Record 2, Main entry term, English
- positive void coefficient of reactivity
1, record 2, English, positive%20void%20coefficient%20of%20reactivity
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
Record 2, Textual support, English
Record number: 2, Textual support number: 1 CONT
The reactor involved in the Chernobyl nuclear accident was a 1, 000-MWe(3, 200-MWt) RBMK, a boiling-water pressure-tube, graphite moderated power reactor that was developed and operated in the former Soviet Union. Because of the pressure-tube design using water as coolant within channels in the graphite moderator, RBMK reactors have a significant positive void coefficient of reactivity in which a reduction in the coolant density results in an increase in the system reactivity due to a reduction in neutron absorption by the coolant. 1, record 2, English, - positive%20void%20coefficient%20of%20reactivity
Record 2, French
Record 2, Domaine(s)
- Physique nucléaire
Record 2, Main entry term, French
- coefficient de vide positif
1, record 2, French, coefficient%20de%20vide%20positif
correct, masculine noun
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record number: 2, Textual support number: 1 CONT
En partie basse de certains canaux de combustible, l'enthalpie du combustible a atteint les niveaux critiques pour la dispersion du combustible [...] Ce phénomène a été aggravé par l'apparition d'un coefficient de vide positif, la vapeur d'eau formée contribuant à propager l'augmentation de la densité de puissance à l'ensemble du cœur. 1, record 2, French, - coefficient%20de%20vide%20positif
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 2017-04-13
Record 3, English
Record 3, Subject field(s)
- Nuclear Fission Reactors
- Nuclear Power Stations
Record 3, Main entry term, English
- in-core instrumentation system
1, record 3, English, in%2Dcore%20instrumentation%20system
correct
Record 3, Abbreviations, English
Record 3, Synonyms, English
Record 3, Textual support, English
Record number: 3, Textual support number: 1 CONT
The in-core instrumentation system (IIS) provides the flux map of the reactor core and in-core thermocouple signals for postaccident monitoring. 2, record 3, English, - in%2Dcore%20instrumentation%20system
Record number: 3, Textual support number: 2 CONT
Cegelec will be responsible for programming and installing two of the most important control systems in a nuclear power plant-the control rod drive control system(RCS), which controls the reactor core, and the in-core instrumentation system(RIC), which measures reactor core neutron flux. 3, record 3, English, - in%2Dcore%20instrumentation%20system
Record 3, French
Record 3, Domaine(s)
- Réacteurs nucléaires de fission
- Centrales nucléaires
Record 3, Main entry term, French
- système RIC
1, record 3, French, syst%C3%A8me%20RIC
correct, masculine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
- système d'instrumentation en cœur 2, record 3, French, syst%C3%A8me%20d%27instrumentation%20en%20c%26oelig%3Bur
correct, masculine noun
Record 3, Textual support, French
Record number: 3, Textual support number: 1 CONT
[...] un système interne, mesurant le flux neutronique à l'intérieur du cœur, et un système externe placé à l'extérieur de la cuve coexistent. La terminologie habituellement retenue pour nommer les systèmes à partir de trigrammes utilise l'appellation RIC (réacteur instrumentation coeur) pour le premier et RPN (réacteur protection nucléaire) pour le second. Le système RIC mesure la distribution relative en 3D de la puissance à l'intérieur du cœur du réacteur avec une très bonne précision liée à un procédé de mesure interne au réacteur. C'est pourquoi on l'appellera par la suite système de référence. La constante de temps associée n'est pas une exigence forte; elle dépendra de l'architecture du système et de la technologie utilisée. 3, record 3, French, - syst%C3%A8me%20RIC
Record 3, Spanish
Record 3, Textual support, Spanish
Record 4 - internal organization data 2017-04-13
Record 4, English
Record 4, Subject field(s)
- Nuclear Fission Reactors
- Nuclear Plant Safety
Record 4, Main entry term, English
- in-core instrumentation
1, record 4, English, in%2Dcore%20instrumentation
correct
Record 4, Abbreviations, English
Record 4, Synonyms, English
Record 4, Textual support, English
Record number: 4, Textual support number: 1 CONT
The thermal neutron flux of the reactor is monitored through the entire power range, from the source range level to 150% of full power(FP). Two types of instrumentation are used to cover this wide range : in-core and out-of-core instrumentation. The in-core instrumentation is composed of self-powered detectors, together with very small calibrating fission chambers(FC)(~3 mm in diameter). Out-of-core instrumentation is composed of ion chambers, BF3 and He3 detectors. 1, record 4, English, - in%2Dcore%20instrumentation
Record 4, French
Record 4, Domaine(s)
- Réacteurs nucléaires de fission
- Sûreté des centrales nucléaires
Record 4, Main entry term, French
- instrumentation en cœur
1, record 4, French, instrumentation%20en%20c%26oelig%3Bur
correct, feminine noun
Record 4, Abbreviations, French
Record 4, Synonyms, French
Record 4, Textual support, French
Record number: 4, Textual support number: 1 CONT
Selon la taille du réacteur et selon les choix du concepteur du réacteur, la surveillance des paramètres nucléaires se fait par l'intermédiaire de deux systèmes d'instrumentation distincts : - le système d'instrumentation hors cœur [...] couvre l'ensemble de la dynamique, et [...] s'appuie sur des détecteurs placés à l'extérieur du cœur [du réacteur] et plus précisément de la cuve du réacteur pour les réacteurs de puissance; - le système d'instrumentation en cœur qui peut être soit fixe et permanent, soit mobile et périodique. 1, record 4, French, - instrumentation%20en%20c%26oelig%3Bur
Record 4, Spanish
Record 4, Textual support, Spanish
Record 5 - internal organization data 2017-04-13
Record 5, English
Record 5, Subject field(s)
- Nuclear Fission Reactors
- Nuclear Plant Safety
Record 5, Main entry term, English
- out-of-core instrumentation
1, record 5, English, out%2Dof%2Dcore%20instrumentation
correct
Record 5, Abbreviations, English
Record 5, Synonyms, English
Record 5, Textual support, English
Record number: 5, Textual support number: 1 CONT
The thermal neutron flux of the reactor is monitored through the entire power range, from the source range level to 150% of full power(FP). Two types of instrumentation are used to cover this wide range : in-core and out-of-core instrumentation. The in-core instrumentation is composed of self-powered detectors, together with very small calibrating fission chambers(FC)(~3 mm in diameter). Out-of-core instrumentation is composed of ion chambers, BF3 and He3 detectors. 1, record 5, English, - out%2Dof%2Dcore%20instrumentation
Record 5, French
Record 5, Domaine(s)
- Réacteurs nucléaires de fission
- Sûreté des centrales nucléaires
Record 5, Main entry term, French
- instrumentation hors cœur
1, record 5, French, instrumentation%20hors%20c%26oelig%3Bur
correct, feminine noun
Record 5, Abbreviations, French
Record 5, Synonyms, French
- instrumentation nucléaire hors cœur 1, record 5, French, instrumentation%20nucl%C3%A9aire%20hors%20c%26oelig%3Bur
correct, feminine noun
Record 5, Textual support, French
Record number: 5, Textual support number: 1 CONT
Selon la taille du réacteur et selon les choix du concepteur du réacteur, la surveillance des paramètres nucléaires se fait par l'intermédiaire de deux systèmes d'instrumentation distincts : - le système d'instrumentation hors cœur [...] couvre l'ensemble de la dynamique, et [...] s'appuie sur des détecteurs placés à l'extérieur du cœur [du réacteur] et plus précisément de la cuve du réacteur pour les réacteurs de puissance; - le système d'instrumentation en cœur [...] 1, record 5, French, - instrumentation%20hors%20c%26oelig%3Bur
Record 5, Spanish
Record 5, Textual support, Spanish
Record 6 - internal organization data 2017-04-13
Record 6, English
Record 6, Subject field(s)
- Nuclear Fission Reactors
- Atomic Physics
Record 6, Main entry term, English
- power distribution
1, record 6, English, power%20distribution
correct
Record 6, Abbreviations, English
Record 6, Synonyms, English
Record 6, Textual support, English
Record number: 6, Textual support number: 1 CONT
Core Power Distribution. In order to ensure predictable temperatures and uniform depletion of the fuel installed in a reactor, numerous measures are taken to provide an even distribution of flux throughout the power producing section of the reactor. This shaping, or flattening, of the neutron flux is normally achieved through the use of reflectors that affect the flux profile across the core, or by the installation of poisons to suppress the neutron flux where desired. 2, record 6, English, - power%20distribution
Record 6, French
Record 6, Domaine(s)
- Réacteurs nucléaires de fission
- Physique atomique
Record 6, Main entry term, French
- distribution de puissance
1, record 6, French, distribution%20de%20puissance
correct, feminine noun
Record 6, Abbreviations, French
Record 6, Synonyms, French
Record 6, Textual support, French
Record number: 6, Textual support number: 1 CONT
[...] les réacteurs nucléaires sont sujets au phénomène de répartition non uniforme de la puissance dans le cœur d'où la notion de distribution de puissance. Elle est mesurée en unité normalisée et non en unité absolue comme, par exemple, en nombre de fissions ou en watts. Elle s'exprime par un nombre sans dimension : si un élément de volume (dx, dy, dz) du réacteur produit une puissance égale à 1,25, cela veut dire qu'il fournit une puissance égale à 1,25 fois la puissance moyenne du cœur. 2, record 6, French, - distribution%20de%20puissance
Record number: 6, Textual support number: 2 CONT
Maîtrise de la distribution de puissance. Dans le cas des grands réacteurs, lorsque la puissance thermique est significative, on craint l'apparition de surpuissances locales qui peuvent dégrader le combustible. Ces phénomènes peuvent apparaître suite à des perturbations sur la distribution spatiale de la puissance lors de certains transitoires qui induisent des redistributions du flux neutronique, comme par exemple les oscillations xénon. Ils dépendent aussi des coefficients de température, notamment du modérateur. Ceux-ci prennent d'autant plus d'importance que le réacteur est de grandes dimensions. 3, record 6, French, - distribution%20de%20puissance
Record 6, Spanish
Record 6, Textual support, Spanish
Record 7 - internal organization data 2017-03-30
Record 7, English
Record 7, Subject field(s)
- Nuclear Power Stations
Record 7, Main entry term, English
- zone control absorber
1, record 7, English, zone%20control%20absorber
correct
Record 7, Abbreviations, English
Record 7, Synonyms, English
Record 7, Textual support, English
Record number: 7, Textual support number: 1 CONT
A number of devices are employed to control the reactivity of the reactor and, hence, its power output. The first of these are the zone control absorbers, which comprise compartments in the reactor core capable of being filled with light water, a neutron absorber. 1, record 7, English, - zone%20control%20absorber
Record 7, French
Record 7, Domaine(s)
- Centrales nucléaires
Record 7, Main entry term, French
- absorbeur de neutrons pour le contrôle zonal
1, record 7, French, absorbeur%20de%20neutrons%20pour%20le%20contr%C3%B4le%20zonal
masculine noun
Record 7, Abbreviations, French
Record 7, Synonyms, French
Record 7, Textual support, French
Record number: 7, Textual support number: 1 CONT
Plusieurs dispositifs servent à contrôler la réactivité du réacteur et, par conséquent, son rendement. Il y a [...] les absorbeurs de neutrons pour le contrôle zonal : des compartiments sont prévus dans le cœur du réacteur pour recevoir l'eau légère servant d'absorbeur. 1, record 7, French, - absorbeur%20de%20neutrons%20pour%20le%20contr%C3%B4le%20zonal
Record 7, Spanish
Record 7, Textual support, Spanish
Record 8 - internal organization data 2017-02-15
Record 8, English
Record 8, Subject field(s)
- Calculating Procedures (Mathematics)
- Nuclear Physics
Record 8, Main entry term, English
- first-collision probability method
1, record 8, English, first%2Dcollision%20probability%20method
correct
Record 8, Abbreviations, English
Record 8, Synonyms, English
- first collision probability method 2, record 8, English, first%20collision%20probability%20method
correct
- first-collisions probability method 2, record 8, English, first%2Dcollisions%20probability%20method
Record 8, Textual support, English
Record number: 8, Textual support number: 1 CONT
The calculation of the neutron lifetime by the first-collisions probability method for nuclear power facilities … are described by a universal geometry … Algorithms for calculating the matrix elements using a universal geometric module, which … is used in programs for performing Monte Carlo calculations of particle transfer … 2, record 8, English, - first%2Dcollision%20probability%20method
Record 8, French
Record 8, Domaine(s)
- Procédés de calcul (Mathématiques)
- Physique nucléaire
Record 8, Main entry term, French
- méthode des probabilités de première collision
1, record 8, French, m%C3%A9thode%20des%20probabilit%C3%A9s%20de%20premi%C3%A8re%20collision
correct, feminine noun
Record 8, Abbreviations, French
Record 8, Synonyms, French
Record 8, Textual support, French
Record number: 8, Textual support number: 1 CONT
Méthode des probabilités de première collision. Cette approche intégrale de l’équation de Boltzmann avec correction de transport est celle mise en œuvre dans les calculs d’assemblage de réacteurs. En pratique, l’opérateur intégral de Peierls est traité par une technique de volumes finis Vi (pour les réacteurs à eau, un à dix pour chaque pastille de combustible, un à trois pour chaque élément de modérateur associé, etc., tout cela dans une modélisation à deux dimensions de l’assemblage, supposé donc infiniment haut). 1, record 8, French, - m%C3%A9thode%20des%20probabilit%C3%A9s%20de%20premi%C3%A8re%20collision
Record 8, Spanish
Record 8, Textual support, Spanish
Record 9 - internal organization data 2016-11-23
Record 9, English
Record 9, Subject field(s)
- Atomic Physics
- Nuclear Fission Reactors
Record 9, Main entry term, English
- reactivity excursion
1, record 9, English, reactivity%20excursion
correct
Record 9, Abbreviations, English
Record 9, Synonyms, English
Record 9, Textual support, English
Record number: 9, Textual support number: 1 CONT
Reactivity excursions involving the control rods are either prevented or their consequences substantially mitigated by a control RWM... which supplements procedural controls in avoiding patterns of high rod worths, a low power range monitor(LPRM) neutron monitoring and alarm system... 1, record 9, English, - reactivity%20excursion
Record 9, French
Record 9, Domaine(s)
- Physique atomique
- Réacteurs nucléaires de fission
Record 9, Main entry term, French
- excursion de réactivité
1, record 9, French, excursion%20de%20r%C3%A9activit%C3%A9
correct, feminine noun
Record 9, Abbreviations, French
Record 9, Synonyms, French
Record 9, Textual support, French
Record number: 9, Textual support number: 1 OBS
excursion de réactivité : terme extrait du «Glossaire de l’énergie nucléaire» et reproduit avec l’autorisation de l’Organisation de coopération et de développement économiques. 2, record 9, French, - excursion%20de%20r%C3%A9activit%C3%A9
Record 9, Spanish
Record 9, Textual support, Spanish
Record 10 - internal organization data 2015-04-29
Record 10, English
Record 10, Subject field(s)
- Nuclear Fission Reactors
Record 10, Main entry term, English
- reactor noise
1, record 10, English, reactor%20noise
correct, standardized
Record 10, Abbreviations, English
Record 10, Synonyms, English
Record 10, Textual support, English
Record number: 10, Textual support number: 1 DEF
The fluctuations in neutron flux density, and hence in power, in a nuclear reactor caused by the stochastic nature of the nuclear processes or by random fluctuations in mechanical or hydrodynamic processes having a bearing on reactivity. 1, record 10, English, - reactor%20noise
Record number: 10, Textual support number: 1 OBS
reactor noise: term and definition standardized by ISO. 2, record 10, English, - reactor%20noise
Record 10, French
Record 10, Domaine(s)
- Réacteurs nucléaires de fission
Record 10, Main entry term, French
- bruit d'un réacteur
1, record 10, French, bruit%20d%27un%20r%C3%A9acteur
correct, masculine noun, standardized
Record 10, Abbreviations, French
Record 10, Synonyms, French
Record 10, Textual support, French
Record number: 10, Textual support number: 1 DEF
Dans un réacteur nucléaire, fluctuations de la densité de flux de neutrons, et par conséquent de la puissance, provoquées par la nature stochastique des processus nucléaires ou par les fluctuations aléatoires dans les processus mécaniques ou hydrodynamiques qui ont une influence sur la réactivité. 1, record 10, French, - bruit%20d%27un%20r%C3%A9acteur
Record number: 10, Textual support number: 1 OBS
bruit d'un réacteur : terme et définition normalisés par l'ISO. 2, record 10, French, - bruit%20d%27un%20r%C3%A9acteur
Record 10, Spanish
Record 10, Textual support, Spanish
Record 11 - internal organization data 2015-04-29
Record 11, English
Record 11, Subject field(s)
- Nuclear Fission Reactors
Record 11, Main entry term, English
- source range
1, record 11, English, source%20range
correct, standardized
Record 11, Abbreviations, English
Record 11, Synonyms, English
Record 11, Textual support, English
Record number: 11, Textual support number: 1 DEF
The range of reactor power within which a supplementary neutron source is required to facilitate the measurement of neutron flux density. 1, record 11, English, - source%20range
Record number: 11, Textual support number: 1 OBS
source range: term and definition standardized by ISO. 2, record 11, English, - source%20range
Record 11, French
Record 11, Domaine(s)
- Réacteurs nucléaires de fission
Record 11, Main entry term, French
- domaine des sources
1, record 11, French, domaine%20des%20sources
correct, masculine noun, standardized
Record 11, Abbreviations, French
Record 11, Synonyms, French
Record 11, Textual support, French
Record number: 11, Textual support number: 1 DEF
Domaine du niveau de puissance d'un réacteur dans lequel il est nécessaire d'ajouter une source de neutrons pour faciliter la mesure de la densité de flux des neutrons. 1, record 11, French, - domaine%20des%20sources
Record number: 11, Textual support number: 1 OBS
domaine des sources : terme et définition normalisés par l'ISO. 2, record 11, French, - domaine%20des%20sources
Record 11, Spanish
Record 11, Textual support, Spanish
Record 12 - internal organization data 2015-04-29
Record 12, English
Record 12, Subject field(s)
- Nuclear Physics
- Nuclear Fission Reactors
Record 12, Main entry term, English
- Rossi-alpha method
1, record 12, English, Rossi%2Dalpha%20method
correct, standardized
Record 12, Abbreviations, English
Record 12, Synonyms, English
Record 12, Textual support, English
Record number: 12, Textual support number: 1 DEF
A method for determining the Rossi alpha by measuring the statistical distribution of time intervals between successive pulses in a neutron detector in a reactor operating at a very low power. 1, record 12, English, - Rossi%2Dalpha%20method
Record number: 12, Textual support number: 1 OBS
Rossi-alpha method: term and definition standardized by ISO. 2, record 12, English, - Rossi%2Dalpha%20method
Record 12, French
Record 12, Domaine(s)
- Physique nucléaire
- Réacteurs nucléaires de fission
Record 12, Main entry term, French
- méthode de l'alpha de Rossi
1, record 12, French, m%C3%A9thode%20de%20l%27alpha%20de%20Rossi
correct, feminine noun, standardized
Record 12, Abbreviations, French
Record 12, Synonyms, French
Record 12, Textual support, French
Record number: 12, Textual support number: 1 DEF
Méthode pour déterminer l'alpha de Rossi par la mesure de la distribution statistique des intervalles de temps entre les impulsions successives dans un détecteur de neutrons à l'intérieur d'un réacteur fonctionnant à très basse puissance. 1, record 12, French, - m%C3%A9thode%20de%20l%27alpha%20de%20Rossi
Record number: 12, Textual support number: 1 OBS
méthode de l'alpha de Rossi : terme et définition normalisés par l'ISO. 2, record 12, French, - m%C3%A9thode%20de%20l%27alpha%20de%20Rossi
Record 12, Spanish
Record 12, Textual support, Spanish
Record 13 - internal organization data 2015-04-29
Record 13, English
Record 13, Subject field(s)
- Nuclear Physics
- Nuclear Fission Reactors
Record 13, Main entry term, English
- xenon instability
1, record 13, English, xenon%20instability
correct, standardized
Record 13, Abbreviations, English
Record 13, Synonyms, English
Record 13, Textual support, English
Record number: 13, Textual support number: 1 DEF
The oscillations in the power level in localized parts of a large reactor, due to the dependence of the xenon poisoning on the thermal neutron flux density. 1, record 13, English, - xenon%20instability
Record number: 13, Textual support number: 1 OBS
xenon instability: term and definition standardized by ISO. 2, record 13, English, - xenon%20instability
Record 13, French
Record 13, Domaine(s)
- Physique nucléaire
- Réacteurs nucléaires de fission
Record 13, Main entry term, French
- instabilité xénon
1, record 13, French, instabilit%C3%A9%20x%C3%A9non
correct, feminine noun, standardized
Record 13, Abbreviations, French
Record 13, Synonyms, French
Record 13, Textual support, French
Record number: 13, Textual support number: 1 DEF
Oscillations du niveau de puissance en certains points d'un grand réacteur, dues au fait que l'empoisonnement xénon dépend de la densité de flux de neutrons thermiques. 1, record 13, French, - instabilit%C3%A9%20x%C3%A9non
Record number: 13, Textual support number: 1 OBS
instabilité xénon : terme et définition normalisés par l'ISO. 2, record 13, French, - instabilit%C3%A9%20x%C3%A9non
Record 13, Spanish
Record 13, Textual support, Spanish
Record 14 - internal organization data 2014-06-10
Record 14, English
Record 14, Subject field(s)
- Atomic Physics
- Nuclear Fission Reactors
Record 14, Main entry term, English
- counter range
1, record 14, English, counter%20range
correct, standardized
Record 14, Abbreviations, English
Record 14, Synonyms, English
Record 14, Textual support, English
Record number: 14, Textual support number: 1 DEF
The range of reactor power within which a particle counter is used for adequate measurement of the neutron flux density. 1, record 14, English, - counter%20range
Record number: 14, Textual support number: 1 OBS
counter range: term and definition standardized by ISO. 2, record 14, English, - counter%20range
Record 14, French
Record 14, Domaine(s)
- Physique atomique
- Réacteurs nucléaires de fission
Record 14, Main entry term, French
- domaine de comptage
1, record 14, French, domaine%20de%20comptage
correct, masculine noun, standardized
Record 14, Abbreviations, French
Record 14, Synonyms, French
Record 14, Textual support, French
Record number: 14, Textual support number: 1 DEF
Domaine de niveau de puissance d'un réacteur dans lequel un compteur de particules est nécessaire pour une mesure convenable de la densité de flux de neutrons. 1, record 14, French, - domaine%20de%20comptage
Record number: 14, Textual support number: 1 OBS
domaine de comptage : terme et définition normalisés par l'ISO. 2, record 14, French, - domaine%20de%20comptage
Record 14, Spanish
Record 14, Textual support, Spanish
Record 15 - internal organization data 2011-02-24
Record 15, English
Record 15, Subject field(s)
- Nuclear Fission Reactors
Record 15, Main entry term, English
- gray rod
1, record 15, English, gray%20rod
correct
Record 15, Abbreviations, English
Record 15, Synonyms, English
- grey rod 2, record 15, English, grey%20rod
Great Britain
Record 15, Textual support, English
Record number: 15, Textual support number: 1 CONT
... the reactivity of the advanced pressurized water reactor is controlled by three types of rods, conventional control rods, water displacer rods and gray rods.... In addition to the control rods and water displacer rods, the advanced PWR [pressurized water reactor] also has gray rods which are between the control rods and water displacer rods in neutron absorption capacity. These gray rods are used in control of the neutron population and, like the water displacer rods, are either fully inserted or fully withdrawn. Like the control rods, the water displacer rods and grays rods are mounted on spiders to form rod clusters which are operated simultaneously with clusters symmetrically located in each quadrant of the core to avoid radial distortion of the power distribution. 3, record 15, English, - gray%20rod
Record 15, French
Record 15, Domaine(s)
- Réacteurs nucléaires de fission
Record 15, Main entry term, French
- barre grise
1, record 15, French, barre%20grise
correct, feminine noun
Record 15, Abbreviations, French
Record 15, Synonyms, French
Record 15, Textual support, French
Record number: 15, Textual support number: 1 DEF
Barre de commande absorbant moins les neutrons qu'une barre noire, et qui permet le réglage fin de la puissance du réacteur nucléaire. 2, record 15, French, - barre%20grise
Record number: 15, Textual support number: 1 OBS
barre de commande : Barre ou ensemble de tiges solidaires mobiles, contenant une matière absorbant les neutrons et qui, suivant sa position dans le coeur d'un réacteur nucléaire, influe sur sa réactivité. 3, record 15, French, - barre%20grise
Record 15, Spanish
Record 15, Textual support, Spanish
Record 16 - internal organization data 2010-12-09
Record 16, English
Record 16, Subject field(s)
- Nuclear Physics
Record 16, Main entry term, English
- startup channel
1, record 16, English, startup%20channel
correct
Record 16, Abbreviations, English
Record 16, Synonyms, English
- start-up channel 2, record 16, English, start%2Dup%20channel
correct
Record 16, Textual support, English
Record number: 16, Textual support number: 1 CONT
The neutron flux monitoring system consists of two startup channels, two control channels and four safety channels. Typically, the safety channels are provided to monitor the ex-core neutron flux over the range of source power to full power of the nuclear reactor. Two startup channels provide source level range neutron flux information to a reactor operator. Two control channels provide neutron flux information, in the power operating range, to the reactor regulating system during automatic turbine load-following operations. 1, record 16, English, - startup%20channel
Record 16, French
Record 16, Domaine(s)
- Physique nucléaire
Record 16, Main entry term, French
- chaîne de démarrage
1, record 16, French, cha%C3%AEne%20de%20d%C3%A9marrage
correct, feminine noun
Record 16, Abbreviations, French
Record 16, Synonyms, French
Record 16, Textual support, French
Record number: 16, Textual support number: 1 CONT
Contrôle de la puissance neutronique. Des détecteurs classiques de mesure de puissance neutronique sont placés, en général en dehors de la cuve principale, sauf quelques fois pour des chaînes de démarrage, dans une position où ils peuvent contrôler le fonctionnement du réacteur sur toute sa gamme de puissances. 1, record 16, French, - cha%C3%AEne%20de%20d%C3%A9marrage
Record 16, Spanish
Record 16, Textual support, Spanish
Record 17 - internal organization data 2010-12-03
Record 17, English
Record 17, Subject field(s)
- Nuclear Fission Reactors
- Nuclear Plant Safety
Record 17, Main entry term, English
- negative reactivity trip
1, record 17, English, negative%20reactivity%20trip
correct
Record 17, Abbreviations, English
Record 17, Synonyms, English
Record 17, Textual support, English
Record number: 17, Textual support number: 1 DEF
A reactor shutdown automatically triggered by the three power range neutron measuring channels that monitor the core's reactivity [, ] when two of these channels measure reactivity below a value set at-10 pcm [per cent mille]. 1, record 17, English, - negative%20reactivity%20trip
Record number: 17, Textual support number: 1 OBS
This automatic response protects the reactor from accidents caused by largely insufficient cooling of the core, such as instantaneous breach of the connection between primary pump and diagrid. 1, record 17, English, - negative%20reactivity%20trip
Record 17, French
Record 17, Domaine(s)
- Réacteurs nucléaires de fission
- Sûreté des centrales nucléaires
Record 17, Main entry term, French
- arrêt d’urgence par réactivité négative
1, record 17, French, arr%C3%AAt%20d%26rsquo%3Burgence%20par%20r%C3%A9activit%C3%A9%20n%C3%A9gative
correct, masculine noun
Record 17, Abbreviations, French
Record 17, Synonyms, French
- arrêt d’urgence sur réactivité négative 1, record 17, French, arr%C3%AAt%20d%26rsquo%3Burgence%20sur%20r%C3%A9activit%C3%A9%20n%C3%A9gative
correct, masculine noun
- AURN 2, record 17, French, AURN
correct, masculine noun
- AURN 2, record 17, French, AURN
Record 17, Textual support, French
Record number: 17, Textual support number: 1 CONT
[…] il convient de rappeler que le réacteur PHÉNIX a fait l’objet, en 1989 et 1990, de quatre arrêts d’urgence sur réactivité négative, dont l’origine est restée inexpliquée. Toutefois, l’hypothèse de passage de gaz dans le cœur a été écartée. À la suite de ces arrêts, le réacteur PHÉNIX est équipé d’une instrumentation renforcée (dont une chambre de mesure neutronique en cuve), avec redondance et diversification des mesures, mais aucun nouvel arrêt d’urgence par réactivité négative n’est survenu depuis 1990. 1, record 17, French, - arr%C3%AAt%20d%26rsquo%3Burgence%20par%20r%C3%A9activit%C3%A9%20n%C3%A9gative
Record 17, Key term(s)
- A.U.R.N.
Record 17, Spanish
Record 17, Textual support, Spanish
Record 18 - internal organization data 2009-11-09
Record 18, English
Record 18, Subject field(s)
- Nuclear Physics
Record 18, Main entry term, English
- neutron width
1, record 18, English, neutron%20width
correct
Record 18, Abbreviations, English
Record 18, Synonyms, English
Record 18, Textual support, English
Record number: 18, Textual support number: 1 CONT
The theory of nuclear reactions has been applied to U-238, and the nuclear parameters relevant to the proposed PPR(plutonium power reactor) have been deduced from the available experimental data. These nuclear parameters include the average neutron width, radiative width, and level spacing for U-238 in the range 1 kv to 4OO kv, the approximate resonance parameters alpha sub 0, Gamma, and Gamma sub n for the 6. 6 ev resonance of U-238, and the incident neutron energy for which the neutron width equals the radiative width. 1, record 18, English, - neutron%20width
Record 18, French
Record 18, Domaine(s)
- Physique nucléaire
Record 18, Main entry term, French
- largeur neutronique
1, record 18, French, largeur%20neutronique
correct, feminine noun
Record 18, Abbreviations, French
Record 18, Synonyms, French
Record 18, Textual support, French
Record 18, Spanish
Record 18, Textual support, Spanish
Record 19 - internal organization data 2009-06-16
Record 19, English
Record 19, Subject field(s)
- Nuclear Plant Safety
- Nuclear Fission Reactors
Record 19, Main entry term, English
- Nuclear Instrumentation System
1, record 19, English, Nuclear%20Instrumentation%20System
correct
Record 19, Abbreviations, English
- NIS 1, record 19, English, NIS
correct
Record 19, Synonyms, English
- nuclear instrumentation system 2, record 19, English, nuclear%20instrumentation%20system
correct
Record 19, Textual support, English
Record number: 19, Textual support number: 1 CONT
The Nuclear Instrumentation System(NIS) monitors neutron flux and generates appropriate trips, permissives and alarms for various phases of reactor operating and shutdown conditions. The NIS also indicates reactor status during startup and power operation. 1, record 19, English, - Nuclear%20Instrumentation%20System
Record 19, French
Record 19, Domaine(s)
- Sûreté des centrales nucléaires
- Réacteurs nucléaires de fission
Record 19, Main entry term, French
- système d'instrumentation nucléaire
1, record 19, French, syst%C3%A8me%20d%27instrumentation%20nucl%C3%A9aire
correct, masculine noun
Record 19, Abbreviations, French
- SIN 2, record 19, French, SIN
masculine noun
Record 19, Synonyms, French
Record 19, Textual support, French
Record number: 19, Textual support number: 1 CONT
Le système d'instrumentation nucléaire (SIN) [...] est constitué de deux parties distinctes : la partie protection (classée sûreté) qui assure la détection, les mesures, l'affichage et les déclenchements à seuil. Elle comprend quatre voies indépendantes : deux voies sont équipées d'une CNS (chaîne niveau source), d'une CNI (chaîne niveau intermédiaire) et d'une CNP (chaîne niveau puissance). Les deux autres voies ne sont équipées que d'une CNP; la partie contrôle (non classée) qui assure des fonctions complémentaires comprenant une chaîne audiovisuelle, une chaîne de contrôle des distributions de puissance et une chaîne de comparaison des quatre CNP entre elles. 1, record 19, French, - syst%C3%A8me%20d%27instrumentation%20nucl%C3%A9aire
Record 19, Spanish
Record 19, Textual support, Spanish
Record 20 - internal organization data 2008-11-21
Record 20, English
Record 20, Subject field(s)
- Nuclear Science and Technology
- Nuclear Power Stations
Record 20, Main entry term, English
- adjuster
1, record 20, English, adjuster
correct
Record 20, Abbreviations, English
Record 20, Synonyms, English
- adjuster rod 2, record 20, English, adjuster%20rod
correct
Record 20, Textual support, English
Record number: 20, Textual support number: 1 DEF
A reactivity control device consisting of a removable solid absorber element, vertical guide tube and a drive mechanism. Adjusters are used to shape the neutron flux for optimum reactor power and fuel burnup... 1, record 20, English, - adjuster
Record 20, French
Record 20, Domaine(s)
- Sciences et techniques nucléaires
- Centrales nucléaires
Record 20, Main entry term, French
- barre de compensation
1, record 20, French, barre%20de%20compensation
correct, feminine noun
Record 20, Abbreviations, French
Record 20, Synonyms, French
Record 20, Textual support, French
Record number: 20, Textual support number: 1 DEF
Barre de réglage utilisée pour la compensation d'un réacteur nucléaire. 2, record 20, French, - barre%20de%20compensation
Record 20, Spanish
Record 20, Textual support, Spanish
Record 21 - internal organization data 2008-09-04
Record 21, English
Record 21, Subject field(s)
- Mechanical Components
- Nuclear Fission Reactors
Record 21, Main entry term, English
- automatic control assembly
1, record 21, English, automatic%20control%20assembly
correct
Record 21, Abbreviations, English
Record 21, Synonyms, English
Record 21, Textual support, English
Record number: 21, Textual support number: 1 DEF
An assembly designed to perform the automatic regulation of a quantity which is characteristic of the power of the reactor, such as the neutron flux density or any other quantity for which regulation is desired, and, in certain conditions, to change automatically the value of this quantity. 1, record 21, English, - automatic%20control%20assembly
Record 21, French
Record 21, Domaine(s)
- Composants mécaniques
- Réacteurs nucléaires de fission
Record 21, Main entry term, French
- ensemble de réglage automatique
1, record 21, French, ensemble%20de%20r%C3%A9glage%20automatique
masculine noun
Record 21, Abbreviations, French
Record 21, Synonyms, French
Record 21, Textual support, French
Record 21, Spanish
Record 21, Textual support, Spanish
Record 22 - external organization data 2006-03-24
Record 22, English
Record 22, Subject field(s)
- Control Instrumentation (Mechanical Components)
- Nuclear Fission Reactors
- Compartment - Canadian Nuclear Safety Commission
Record 22, Main entry term, English
- moderator level control 1, record 22, English, moderator%20level%20control
Record 22, Abbreviations, English
Record 22, Synonyms, English
Record 22, Textual support, English
Record number: 22, Textual support number: 1 CONT
Moderator level control is part of the regulation system on dump tank units.... Neutron leakage from the core increases as the moderator level drops. This reduces reactor power.(Reactivity increases as the calandria refills to its normal operating level.) 1, record 22, English, - moderator%20level%20control
Record 22, French
Record 22, Domaine(s)
- Dispositifs de commande (Composants mécaniques)
- Réacteurs nucléaires de fission
- Tiroir - Commission canadienne de sûreté nucléaire
Record 22, Main entry term, French
- contrôle de niveau du modérateur
1, record 22, French, contr%C3%B4le%20de%20niveau%20du%20mod%C3%A9rateur
masculine noun
Record 22, Abbreviations, French
Record 22, Synonyms, French
Record 22, Textual support, French
Record number: 22, Textual support number: 1 CONT
Le contrôle du niveau du modérateur fait partie du système de régulation dans les réservoirs de drainage. [...] La fuite de neutrons hors du coeur augmente à mesure que le niveau du modérateur baisse. Cela permet de réduire la puissance du réacteur. (La réactivité augmente à mesure que la calandre se remplit jusqu'à son niveau de fonctionnement normal.) 1, record 22, French, - contr%C3%B4le%20de%20niveau%20du%20mod%C3%A9rateur
Record 22, Spanish
Record 22, Textual support, Spanish
Record 23 - external organization data 2005-08-25
Record 23, English
Record 23, Subject field(s)
- Atomic Physics
- Nuclear Fission Reactors
- Compartment - Canadian Nuclear Safety Commission
Record 23, Main entry term, English
- transient xenon peak 1, record 23, English, transient%20xenon%20peak
Record 23, Abbreviations, English
Record 23, Synonyms, English
Record 23, Textual support, English
Record number: 23, Textual support number: 1 CONT
Any power reduction causes a transient xenon peak. The smaller the power reduction the smaller the peak, and the earlier it occurs. For example, on a power reduction from 100% to 60%, there is still an initial excess of production over loss, but significant neutron flux remains to burn out the xenon. The peak height and its duration are reduced, and the peak occurs earlier. 1, record 23, English, - transient%20xenon%20peak
Record 23, French
Record 23, Domaine(s)
- Physique atomique
- Réacteurs nucléaires de fission
- Tiroir - Commission canadienne de sûreté nucléaire
Record 23, Main entry term, French
- pic de xénon transitoire
1, record 23, French, pic%20de%20x%C3%A9non%20transitoire
masculine noun
Record 23, Abbreviations, French
Record 23, Synonyms, French
Record 23, Textual support, French
Record number: 23, Textual support number: 1 CONT
Toute réduction de puissance cause un pic de xénon transitoire. Plus la réduction de puissance est faible, plus le pic est faible et plus il se produit rapidement. Par exemple, pour une réduction de puissance de 100 % à 60 %, il y a encore une production en excès initial par rapport aux pertes, mais un flux de neutron important demeure pour effectuer la combustion du xénon. La hauteur du pic et sa durée sont réduites, et le pic survient plus tôt. 1, record 23, French, - pic%20de%20x%C3%A9non%20transitoire
Record 23, Spanish
Record 23, Textual support, Spanish
Record 24 - external organization data 2005-08-25
Record 24, English
Record 24, Subject field(s)
- Physics
- Nuclear Fission Reactors
- Compartment - Canadian Nuclear Safety Commission
Record 24, Main entry term, English
- power reduction 1, record 24, English, power%20reduction
Record 24, Abbreviations, English
Record 24, Synonyms, English
Record 24, Textual support, English
Record number: 24, Textual support number: 1 CONT
Any power reduction causes a transient xenon peak. The smaller the power reduction the smaller the peak, and the earlier it occurs. For example, on a power reduction from 100% to 60%, there is still an initial excess of production over loss, but significant neutron flux remains to burn out the xenon. The peak height and its duration are reduced, and the peak occurs earlier. 1, record 24, English, - power%20reduction
Record 24, French
Record 24, Domaine(s)
- Physique
- Réacteurs nucléaires de fission
- Tiroir - Commission canadienne de sûreté nucléaire
Record 24, Main entry term, French
- réduction de puissance
1, record 24, French, r%C3%A9duction%20de%20puissance
feminine noun
Record 24, Abbreviations, French
Record 24, Synonyms, French
Record 24, Textual support, French
Record number: 24, Textual support number: 1 CONT
Toute réduction de puissance cause un pic de xénon transitoire. Plus la réduction de puissance est faible, plus le pic est faible et plus il se produit rapidement. Par exemple, pour une réduction de puissance de 100 % à 60 %, il y a encore une production en excès initial par rapport aux pertes, mais un flux de neutron important demeure pour effectuer la combustion du xénon. La hauteur du pic et sa durée sont réduites, et le pic survient plus tôt. 1, record 24, French, - r%C3%A9duction%20de%20puissance
Record 24, Spanish
Record 24, Textual support, Spanish
Record 25 - external organization data 2003-04-15
Record 25, English
Record 25, Subject field(s)
- Nuclear Fission Reactors
- Compartment - Canadian Nuclear Safety Commission
Record 25, Main entry term, English
- SLOWPOKE reactor
1, record 25, English, SLOWPOKE%20reactor
correct
Record 25, Abbreviations, English
Record 25, Synonyms, English
Record 25, Textual support, English
Record number: 25, Textual support number: 1 CONT
The SLOWPOKE Reactor is an enriched uranium reactor capable of operating in a power range of tens of kilowatts(thermal). It is used primarily for isotope production and neutron activation analysis. 2, record 25, English, - SLOWPOKE%20reactor
Record number: 25, Textual support number: 1 OBS
Slowpoke : safe low power critical experiment. 3, record 25, English, - SLOWPOKE%20reactor
Record 25, French
Record 25, Domaine(s)
- Réacteurs nucléaires de fission
- Tiroir - Commission canadienne de sûreté nucléaire
Record 25, Main entry term, French
- réacteur SLOWPOKE
1, record 25, French, r%C3%A9acteur%20SLOWPOKE
correct, masculine noun
Record 25, Abbreviations, French
Record 25, Synonyms, French
Record 25, Textual support, French
Record number: 25, Textual support number: 1 CONT
Le réacteur SLOWPOKE est alimenté à l'uranium enrichi et peut fonctionner à des dizaines de kilowatts (énergie thermique). Il sert surtout à la production d'isotopes et à l'analyse par activation de neutrons. 2, record 25, French, - r%C3%A9acteur%20SLOWPOKE
Record 25, Spanish
Record 25, Textual support, Spanish
Record 26 - external organization data 2002-03-27
Record 26, English
Record 26, Subject field(s)
- Atomic Physics
- Nuclear Fission Reactors
- Compartment - Canadian Nuclear Safety Commission
Record 26, Main entry term, English
- power range
1, record 26, English, power%20range
correct, standardized
Record 26, Abbreviations, English
Record 26, Synonyms, English
Record 26, Textual support, English
Record number: 26, Textual support number: 1 DEF
The range of power within which reactor control is primarily based upon measurement of temperature or neutron flux density rather than time constant(period). 1, record 26, English, - power%20range
Record number: 26, Textual support number: 1 OBS
Term and definition standardized by ISO. 2, record 26, English, - power%20range
Record 26, French
Record 26, Domaine(s)
- Physique atomique
- Réacteurs nucléaires de fission
- Tiroir - Commission canadienne de sûreté nucléaire
Record 26, Main entry term, French
- domaine de puissance
1, record 26, French, domaine%20de%20puissance
correct, masculine noun, standardized
Record 26, Abbreviations, French
Record 26, Synonyms, French
Record 26, Textual support, French
Record number: 26, Textual support number: 1 DEF
Domaine du niveau de puissance dans lequel la commande du réacteur est basée principalement sur des mesures de température ou de densité de flux de neutrons plutôt que de constante de temps (période). 1, record 26, French, - domaine%20de%20puissance
Record number: 26, Textual support number: 1 OBS
Terme et définition normalisés par l'ISO. 2, record 26, French, - domaine%20de%20puissance
Record 26, Spanish
Record 26, Textual support, Spanish
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