G - Physics – 21 – C
Patent
G - Physics
21
C
359/30
G21C 19/19 (2006.01) B25B 13/48 (2006.01) F16B 39/10 (2006.01) G21C 3/32 (2006.01) G21C 19/20 (2006.01)
Patent
CA 1136295
ABSTRACT OF THE DISCLOSURE Remotely assemblable and disassemblable fuel assembly comprising a mechanical structure constituted by an upper plate, a lower plate and a plurality of brace rods extending between the said plates, and a plurality of elongated fuel elements fixed to the brace rods by gratings, one of the ends of each brace rod being irremovably fixed in the upper plate, the other end of each brace rod being fixed to the lower plate by a system of remotely assemblable and disassemblable assem- blies, wherein the said system of assemblies comprises a thread made at the end of each brace rod, a screwing member having a thread able to cooperate with the thread on the brace rod and a head having a plug hole and on its periphery at least one chamfer, as well as machining in the lower plate, constituted by a bore having a larger diameter portion issuing into the outer face of said plate, said larger diameter portion being surrounded by a flange shaped by cutting in the plate and which is separated from the remainder of the plate by an annular groove; further features are an unscrewing device for the remote disassembly of a fuel assembly, a device for restoring the shape of a fuel assembly flange after said flange has been crimped and a device for crimping the flange of a fuel assembly.
323643
Levy Jacques
Viaud Jean-Luc
Commissariat A. L'energie Atomique
Goudreau Gage & Associates
LandOfFree
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