Spacer for a nuclear fuel assembly and a nuclear fuel assembly

Details Spacer for a nuclear fuel assembly and a nuclear fuel assembly Spacer for a nuclear fuel assembly and a nuclear fuel assembly

1997-04-30

1999-02-23

Wasil, Daniel D.

Induced nuclear reactions: processes, systems, and elements

Fuel component structure

Plural fuel segments or elements

376442, G21C 3344

Patent

active

058752234

ABSTRACT:
A spacer for retaining and positioning elongated elements at one or a plurality of levels in a nuclear reactor fuel assembly comprises a grid structure of joined-together sleeve cells. A coolant is adapted to flow upwards through the fuel assembly. The majority of the sleeve cells are provided with an upstream edge with a waveform. The edge is waveformed in such a way that the upwardly flowing coolant first encounters a peak of the wave which is disposed between the joints of the sleeves and thereafter a valley of the wave which is disposed at the joints of the sleeves. The peaks are arranged closer to a center of the sleeve cell than the valleys. Between the peaks and valleys, oblique edges are formed.

REFERENCES:
patent: 4900508 (1990-02-01), Anthony
patent: 5331679 (1994-07-01), Hirukawa
patent: 5434898 (1995-07-01), Barkhurst
patent: 5666389 (1997-09-01), Andersson et al.

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