TERMIUM Plus®

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ACCIDENTAL REACTIVITY INSERTION [1 record]

Record 1 2011-12-21

English

Subject field(s)
  • Nuclear Plant Safety
  • Nuclear Fission Reactors
  • Nuclear Physics
CONT

More quantitatively, in the case that no control rods are foreseen in the SC [sub-critical core], the level of subcriticality should be such that the core stays sub-critical when going from a “hot” state (i.e. normal operation) to a “cold” state (i.e. reactor shut-down). Since thermal feed-back induces generally (e.g. in standard fast reactors) a positive reactivity effect … going from “hot” to “cold”, one can require that the “cold” core should stay sub-critical even in the case of an accidental reactivity insertion … due for example to coolant voidage.

French

Domaine(s)
  • Sûreté des centrales nucléaires
  • Réacteurs nucléaires de fission
  • Physique nucléaire
CONT

Les combustibles MOX [oxyde mixte] actuels peuvent atteindre des taux de combustion de 55 GWj/t [gigawatt jour par tonne] les démonstrations à faire concernent toutes les situations de fonctionnement normal ou accidentel; parmi celles-ci il faut noter […] — l’insertion accidentelle de réactivité […] pour laquelle des essais spécifiques sont exigés sur des installations expérimentales (CABRI à Cadarache) […]

Spanish

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