Nuclear fuel assembly spacer and loop spring with enhanced flexi

Details Nuclear fuel assembly spacer and loop spring with enhanced flexi Nuclear fuel assembly spacer and loop spring with enhanced flexi

1989-12-27

1991-03-26

Walsh, Donald P.

Induced nuclear reactions: processes, systems, and elements

Fuel component structure

Plural fuel segments or elements

376444, G21C 332

Patent

active

050027263

ABSTRACT:
A spring-and-spacer assembly for maintaining fuel rods upright in a fuel assembly of a nuclear reactor core is provided. The spring is in the form of a continuous loop with first and second legs having mid-leg rod-contact regions. Bend regions are positioned on each side of each contact region extending toward the interior of the loop spring. In most positions, the spring is used to load two adjacent fuel rods. In configurations in which there is an unpaired fuel rod, a plate having a tab for contacting the spring is provided. The spring provides the desired force, such as about 2.5 pounds per fuel rod, in a small rod-to-rod spacing of less than about 0.14 inches.

REFERENCES:
patent: 4448745 (1984-05-01), Anthony
patent: 4508679 (1985-04-01), Matzner
patent: 4544522 (1985-10-01), Curulla
patent: 4946587 (1990-08-01), Reeves et al.

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