Fuel assembly

Details Fuel assembly Fuel assembly

2005-06-28

2005-06-28

Carone, Michael J. (Department: 3641)

Induced nuclear reactions: processes, systems, and elements

Fuel component structure

Plural fuel segments or elements

C376S434000, C376S436000, C376S438000, C376S442000, C376S443000, C376S453000, C376S454000

Reexamination Certificate

active

06912264

ABSTRACT:
A fuel element for a nuclear reactor has fuel rods with nuclear fuel guided through spacers. The spacers are equipped with devices that exert a swirling impulse upon a coolant flowing along the fuel rods. In order to present as little flow resistance as possible for the coolant, these swirl-introducing devices have the form of a vane with a spoonlike or bladelike shape and they extend into the coolant flow. Owing to the shape—here the vane is curved in the longitudinal and in the transverse directions—practically all cross sections of the vane have such a high geometrical moment of inertia that even a vane made of a thin sheet metal is sufficiently rigid. Fuel elements configured according to the invention are particularly suitable for use in boiling water nuclear reactors.

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