Fuel assembly

Details Fuel assembly Fuel assembly

1986-06-04

1988-07-05

Kyle, Deborah L.

Induced nuclear reactions: processes, systems, and elements

Reactor structures

Circulating fluid within reactor

376285, G21C 300

Patent

active

047553510

ABSTRACT:
The leaf springs mounted in the upper nozzle of a prior art fuel assembly, which are compressed by the upper core plate to restrain the upward movement of the fuel assembly under the pressure of upwardly-flowing coolant, as dispensed with. Instead the fuel assembly is permitted to rise in a controlled manner into engagement with the upper core-support plate. The lower nozzle is provided with snubbers which engage, and exert low pressure, as required by the specifications governing a reactor, on the lower core plates when the fuel assembly is raised into engagement with the upper core plate by the force of the flowing coolant. In addition springs are provided between the pins extending from the upper and lower core plates and the walls of the holes in the upper and lower nozzles to suppress vibration under the transverse forces impressed by the flowing coolant.

REFERENCES:
patent: 3600276 (1971-08-01), Nims, Jr.
patent: 3676296 (1972-07-01), Linning et al.
patent: 3853703 (1974-12-01), Anthony et al.
patent: 4583584 (1986-04-01), Wepfer

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