Method and apparatus for securing structural tubes in nuclear re

Details Method and apparatus for securing structural tubes in nuclear re Method and apparatus for securing structural tubes in nuclear re

1985-10-23

1987-05-05

Walsh, Donald P.

Induced nuclear reactions: processes, systems, and elements

Fuel component structure

Plural fuel segments or elements

376442, 29523, 29723, 29400N, 72393, G21C 332

Patent

active

046631194

ABSTRACT:
An insert for providing a reduced inside diameter for a structural tube, specifically an instrumentation guide tube, of a nuclear fuel assembly. The insert has forming lobes which coact with the structural tube to plastically deform the structural tube and mechanically lock it with respect to grid straps of a grid assembly. The insert also has centering lobes to prevent it from being expanded in other than a coaxial alignment with the structural tube. An expansion tool is provided for sequentially registering with and expanding sequential forming lobes in a simplified manner whereby all of the operations necessary to assemble the structural tube in the fuel assembly can be easily and accurately performed.

REFERENCES:
patent: 4229259 (1980-10-01), Vaill

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