Patent ID: 6888912
Filing Date: 2005-05-03
Classification: G21C,Y02E

Abstract:
1. Device for positioning and axially aligning a fuel assembly ( 10 ) in the core ( 8 ) of a water-cooled nuclear reactor, consisting of fuel assemblies ( 10 ) of straight prismatic shape, each resting, via a lower endpiece ( 15 ), on a horizontal support plate ( 19 ) of the core, with its axis vertical, and held by an upper core plate ( 9 ) resting on an upper endpiece ( 14 ) of the fuel assembly ( 10 ), comprising, on a respective surface of the core support plate ( 19 ) and of the upper core plate ( 9 ) directed, respectively, towards the upper endpiece ( 14 ) and towards the lower endpiece ( 15 ) of the fuel assembly, at least two projecting positioning pins ( 16 , 22 ) each fixed in an axial direction of alignment of the fuel assembly ( 10 ), inside a pin fixing opening ( 24 , 26 ), to engage respectively in positioning openings for the lower endpiece ( 15 ) and the upper endpiece ( 14 ) of the fuel assembly ( 10 ), characterised in that: each of the fixing openings for positioning pins ( each of the positioning pins ( each of the positioning pins (