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1. US20070215821 - Shielded Irradiation Zone Of Production Line

Office États-Unis d'Amérique
Numéro de la demande 10555210
Date de la demande 30.04.2004
Numéro de publication 20070215821
Date de publication 20.09.2007
Type de publication A1
CIB
G21F 1/00
GPHYSIQUE
21PHYSIQUE NUCLÉAIRE; TECHNIQUE NUCLÉAIRE
FPROTECTION CONTRE LES RAYONS X, LES RAYONS GAMMA, LES RADIATIONS CORPUSCULAIRES OU LE BOMBARDEMENT PAR DES PARTICULES; TRAITEMENT DES MATÉRIAUX CONTAMINÉS PAR LA RADIOACTIVITÉ; DISPOSITIONS POUR LA DÉCONTAMINATION
1Blindage caractérisé par la composition du matériau
Déposants STIRLING ANDREW J
HARE GERALD E
Inventeurs Stirling Andrew J.
Hare Gerald E.
Mandataires MAINE &; ASMUS
Données relatives à la priorité 60466730 01.05.2003 US
CA04000665 30.04.2004 WO
Titre
(EN) Shielded Irradiation Zone Of Production Line
Abrégé
(EN)

A shielding apparatus for an irradiator having an enclosed irradiation zone comprises conveying means adapted to convey carts carrying products for irradiation through an entry port into a shielded first tunnel section extending in a substantially straight path to the irradiation zone, and thence through a shielded second tunnel section extending in a substantially straight path from the irradiation zone to an exit port. The tunnel sections have a substantially identical vertical cross-section which is uniform along their lengths, and each cart has end walls comprising an irradiation shield means configured for a clearance fit with the uniform cross-section of the tunnel sections. Each tunnel section has at least one displacement zone, adapted to reduce radiation leakage from the irradiation zone towards the entry and exit ports. For each displacement zone a substantially horizontal first displacement is less than a maximum cross-sectional width of the tunnel section, a substantially vertical second displacement is less than a maximum cross-sectional height of the tunnel section and each displacement is greater than the corresponding clearance fit of the carts. A return section is provided for returning unloaded carts to a loading zone for reentry to the irradiation zone.

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