Shock absorbing structure for nuclear fuel assemblies

Details Shock absorbing structure for nuclear fuel assemblies Shock absorbing structure for nuclear fuel assemblies

G - Physics

21

C

359/78

G21C 3/30 (2006.01) F16F 9/48 (2006.01) G21C 3/12 (2006.01) G21C 5/06 (2006.01)

Patent

CA 1098628

CASE 3766 INDUSTRIAL TECHNIQUE ABSTRACT A typical embodiment of this invention provides a hydraulic mechanism for alleviating the effect of seismic forces and other stresses that are applied to a fuel assembly in a nuclear reactor. Illustratively, hollow guide posts protrude into a fuel assembly end fitting grid from biased spring pads. Plungers that move with the spring pads plug one end of each of the respective guide posts. Plates on the end fitting grid that have individual holes for fluid discharge partially plug the other ends of the respective guide posts, thereby providing a hydraulic means for absorb- ing the longitudinal component of seismic shocks and other anticipated forces.

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