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VOID COEFFICIENT [5 records]
Record 1 - internal organization data 2017-04-13
Record 1, English
Record 1, Subject field(s)
- Nuclear Physics
Record 1, Main entry term, English
- positive void coefficient of reactivity
1, record 1, English, positive%20void%20coefficient%20of%20reactivity
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, 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 1, English, - positive%20void%20coefficient%20of%20reactivity
Record 1, French
Record 1, Domaine(s)
- Physique nucléaire
Record 1, Main entry term, French
- coefficient de vide positif
1, record 1, French, coefficient%20de%20vide%20positif
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, 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 1, French, - coefficient%20de%20vide%20positif
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2015-01-19
Record 2, English
Record 2, Subject field(s)
- Atomic Physics
Record 2, Main entry term, English
- void coefficient
1, record 2, English, void%20coefficient
correct, standardized
Record 2, Abbreviations, English
Record 2, Synonyms, English
- void coefficient of reactivity 2, record 2, English, void%20coefficient%20of%20reactivity
correct, see observation
Record 2, Textual support, English
Record number: 2, Textual support number: 1 DEF
The partial derivative of reactivity with respect to the volume fraction of voids in a specified location. 1, record 2, English, - void%20coefficient
Record number: 2, Textual support number: 1 OBS
void coefficient: term and definition standardized by ISO in 1997. 3, record 2, English, - void%20coefficient
Record number: 2, Textual support number: 2 OBS
void coefficient of reactivity: term standardized by ISO in the 921 standard published in 1972 but not included in the 1997 version. 3, record 2, English, - void%20coefficient
Record 2, French
Record 2, Domaine(s)
- Physique atomique
Record 2, Main entry term, French
- coefficient de vide
1, record 2, French, coefficient%20de%20vide
correct, masculine noun, standardized
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record number: 2, Textual support number: 1 DEF
Dérivée partielle de la réactivité par rapport à la fraction du volume des vides en un endroit déterminé. 2, record 2, French, - coefficient%20de%20vide
Record number: 2, Textual support number: 1 OBS
coefficient de vide : termes et définition normalisés par l'ISO en 1997. 3, record 2, French, - coefficient%20de%20vide
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 2011-12-22
Record 3, English
Record 3, Subject field(s)
- Mathematics
- Nuclear Fission Reactors
Record 3, Main entry term, English
- negative void coefficient of reactivity
1, record 3, English, negative%20void%20coefficient%20of%20reactivity
correct
Record 3, Abbreviations, English
Record 3, Synonyms, English
Record 3, Textual support, English
Record number: 3, Textual support number: 1 OBS
A negative void coefficient means that the reactivity decreases as the void content inside [a nuclear] reactor increases - but it also means that the reactivity increases if the void content inside the reactor is reduced. 2, record 3, English, - negative%20void%20coefficient%20of%20reactivity
Record 3, French
Record 3, Domaine(s)
- Mathématiques
- Réacteurs nucléaires de fission
Record 3, Main entry term, French
- coefficient de vide négatif
1, record 3, French, coefficient%20de%20vide%20n%C3%A9gatif
correct, masculine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
Record 3, Textual support, French
Record number: 3, Textual support number: 1 CONT
[Réacteurs à eau lourde bouillante.] Le coefficient de vide négatif (– 100 p.c.m. [parties pour cent mille] / % de vide autour des valeurs nominales de la puissance et du débit de recirculation) doit être considéré à pression constante. 1, record 3, French, - coefficient%20de%20vide%20n%C3%A9gatif
Record 3, Spanish
Record 3, Textual support, Spanish
Record 4 - external organization data 2005-11-10
Record 4, English
Record 4, Subject field(s)
- Atomic Physics
- Nuclear Fission Reactors
- Compartment - Canadian Nuclear Safety Commission
Record 4, Main entry term, English
- void coefficient of reactivity 1, record 4, English, void%20coefficient%20of%20reactivity
Record 4, Abbreviations, English
Record 4, Synonyms, English
Record 4, Textual support, English
Record number: 4, Textual support number: 1 CONT
The void coefficient of reactivity is the reactivity change in the core if the heat transport system voids. In a CANDU reactor this reactivity insertion is positive. 1, record 4, English, - void%20coefficient%20of%20reactivity
Record 4, French
Record 4, Domaine(s)
- Physique atomique
- Réacteurs nucléaires de fission
- Tiroir - Commission canadienne de sûreté nucléaire
Record 4, Main entry term, French
- coefficient de réactivité cavitaire
1, record 4, French, coefficient%20de%20r%C3%A9activit%C3%A9%20cavitaire
masculine noun
Record 4, Abbreviations, French
Record 4, Synonyms, French
Record 4, Textual support, French
Record number: 4, Textual support number: 1 CONT
Le coefficient de réactivité cavitaire est le changement de réactivité qui survient dans le coeur si le circuit caloporteur expulse le caloporteur. Dans un réacteur CANDU, cette insertion de réactivité est positive. 1, record 4, French, - coefficient%20de%20r%C3%A9activit%C3%A9%20cavitaire
Record 4, Spanish
Record 4, Textual support, Spanish
Record 5 - internal organization data 1976-06-19
Record 5, English
Record 5, Subject field(s)
- Scientific Research
Record 5, Main entry term, English
- void coefficient 1, record 5, English, void%20coefficient
Record 5, Abbreviations, English
Record 5, Synonyms, English
Record 5, Textual support, English
Record number: 5, Textual support number: 1 OBS
ratio - de parasite B.T. FAO, no 265, oct.72 RA 1, record 5, English, - void%20coefficient
Record 5, French
Record 5, Domaine(s)
- Recherche scientifique
Record 5, Main entry term, French
- coefficient cavitaire 1, record 5, French, coefficient%20cavitaire
Record 5, Abbreviations, French
Record 5, Synonyms, French
Record 5, Textual support, French
Record 5, Spanish
Record 5, Textual support, Spanish
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