Upper internals arrangement for a pressurized water reactor

Details Upper internals arrangement for a pressurized water reactor Upper internals arrangement for a pressurized water reactor

G - Physics

21

C

G21C 13/02 (2006.01) G21C 17/10 (2006.01) G21C 17/116 (2006.01) G21C 19/02 (2006.01)

Patent

CA 2744945

A telescoping guide for extraction and reinsertion support handling of in-core instrument thimble assemblies in the area above the upper support plate in the upper internals of a pressurized water reactor. The telescoping guides extend between the upper ends of the upper internals support columns and an axially movable instrumentation grid assembly which is operable to simultaneously raise the telescoping guides and extract the in-core instrument thimble assemblies from the reactor fuel assemblies.

L'invention concerne, dans les parties internes supérieures d'un réacteur à eau sous pression, des guides télescopiques pour la manutention de supports d'extraction et de réinsertion d'ensembles étuis à instruments internes au cur, dans la zone surplombant la plaque supérieure d'appui. Les guides télescopiques s'étendent entre les extrémités supérieures des colonnes de soutien des parties internes supérieures et un ensemble grille d'instrumentation mobile axialement apte à soulever simultanément les guides télescopiques et à extraire les ensembles étuis à instruments internes au cur des ensembles combustibles du réacteur.

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