Nuclear reactor spring strip grid spacer

Details Nuclear reactor spring strip grid spacer Nuclear reactor spring strip grid spacer

G - Physics

21

C

359/78

G21C 3/12 (2006.01) G21C 3/356 (2006.01)

Patent

CA 1088225

ABSTRACT OF THE DISCLOSURE A bimetallic grid spacer comprising a grid structure of zircaloy formed by intersecting striplike members which define fuel element openings for receiving fuel elements and spring strips made of INCONEL positioned within the grid structure for cooperating with the fuel elements to maintain them in their desired position. A plurality of these spring strips extend longitudinally between sides of the grid structure, being locked in position by the grid retaining strips. The fuel rods, which are disposed in the fuel openings formed in the grid structure, are positioned by means of the springs associated with the spring strips and a plurality of dimples which extend from the zircaloy grid structure into the openings. In one embodiment the strips are disposed in a plurality of arrays with those spring strip arrays situated in opposing diagonal quadrants of the grid structure extending in the same direction and adjacent spring strip arrays in each half of the spacer extend- ing in relatively perpendicular directions.

278477

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