Nuclear fuel assembly with means for retarding detector tube wea

Details Nuclear fuel assembly with means for retarding detector tube wea Nuclear fuel assembly with means for retarding detector tube wea

1988-05-10

1990-06-12

Walsh, Donald P.

Induced nuclear reactions: processes, systems, and elements

Fuel component structure

Plural fuel segments or elements

376254, 376261, G21C 332

Patent

active

049331370

ABSTRACT:
An nuclear fuel assembly including an instrumentation tube adapted for insertion of an in-core detector tube and at least two equi-angularly disposed springs for holding the in-core detector tube concentrically within the instrumentation tube to prevent detector tube vibration is related herein. The springs are preferably secured to the inner surface of the instrumentation tube immediately above the bottom nozzle. An extension sleeve may be provided which extends upwardly or downwardly from the bottom nozzle to surroundingly receive the in-core detector tube. This will effectively increase the axial length of the in-core detector tube that is likely to abut the inner surface of the extension sleeve thus rendering the in-core dectector tube less susceptible to wear due to reactor coolant flow induced vibration.

REFERENCES:
patent: 4684501 (1987-08-01), Lui
patent: 4751039 (1988-06-01), Delevallee
patent: 4778647 (1988-10-01), Gasparro
patent: 4822558 (1989-04-01), Merkovsky

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