ASSEMBLAGE COMBUSTIBLE POUR REACTEUR NUCLEAIRE DE TYPE RNR-NA, A BOITIER LOGEANT UN DISPOSITIF DE PROTECTION NEUTRONIQUE SOLIDARISE DE MANIERE AMOVIBLE

Fuel assembly for a nuclear reactor comprising a housing of longitudinal axis (X) having a central section containing nuclear-fuel pins and an upper section, forming a portion of the head of the assembly, containing a upper neutron shielding device (NSD) including neutron absorbers and means for rev...

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Bibliographic Details
Main Authors MAILHE GUY, LORENZO DENIS, BECK THIERRY
Format Patent
LanguageFrench
Published 30.12.2016
Subjects
NUCLEAR ENGINEERING
NUCLEAR PHYSICS
NUCLEAR REACTORS
PHYSICS
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Summary:Fuel assembly for a nuclear reactor comprising a housing of longitudinal axis (X) having a central section containing nuclear-fuel pins and an upper section, forming a portion of the head of the assembly, containing a upper neutron shielding device (NSD) including neutron absorbers and means for reversibly interlocking with the housing and a moveable weight forming the head of the NSD, which is mounted so as to be able to move translationally relative to the rest of the NSD over a given path, said interlocking means being configured so that the NSD and the housing can be interlocked and uninterlocked by moving the moveable weight along the longitudinal axis by means of a grapple for extraction of the NSD, the claws of this grapple engaging with the moveable weight and the rest of the NSD being in downward longitudinal abutment in the interior of the housing.
Bibliography:Application Number: FR20140063003