G - Physics – 21 – C
Patent
G - Physics
21
C
G21C 3/18 (2006.01) G21C 3/33 (2006.01) G21C 3/335 (2006.01) G21C 5/08 (2006.01) G21C 5/16 (2006.01) G21C 21/00 (2006.01) G21C 3/336 (2006.01)
Patent
CA 2041852
There is described a system for use in a nuclear reactor pressure tube replacement program. The system employs a carriage and stop mechanism and a magazine. The system is used to deposit fuel channel annular spacers around the circumference of the reactor pressure tubes to maintain a space between the pressure tubes and the calandria tubes. A protective sleeve assembly and nose cone house a pressure tube. A fuel channel annular spacer magazine is attached to the end of the protective sleeve assembly and the whole is loaded through a lattice tube opening in the reactor end shield wall into a calandria tube. A travel tube housing a chain-driven carriage is placed in position on the other side of the calandria tube through the lattice tube opening in the opposite wall of the reactor. It is used to remove the nose cone and protective sleeve from the pressure tube while depositing fuel channel annular spacers at predetermined intervals.
Atomic Energy Of Canada Limited - Energie Atomique Du Canada Limitee
Osler Hoskin & Harcourt Llp
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