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GAS-COOLED REACTOR FUEL [2 records]

Record 1 2011-01-21

English

Subject field(s)
  • Properties of Fuels
  • Nuclear Fission Reactors
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.

French

Domaine(s)
  • Propriétés des combustibles
  • Réacteurs nucléaires de fission
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.

Spanish

Save record 1

Record 2 2009-09-16

English

Subject field(s)
  • Combustion and Fuels (Fireplaces)
  • Nuclear Fission Reactors
CONT

AGR [Advanced Gas-cooled Reactor] fuel uses the same manufacturing process as for LWR [light water reactor] fuel. The fuel pellets(which are about the size of a thimble) are stacked inside a fuel tube. Once the tubes are sealed and pressurised, they are put together in the graphite 'sleeve’ to form the AGR fuel assembly.

French

Domaine(s)
  • Combustion et combustibles (Foyers)
  • Réacteurs nucléaires de fission
OBS

AGR : Advanced Gas-cooled Reactor.

Spanish

Save record 2

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