Nuclear fuel assembly coolant control

Details Nuclear fuel assembly coolant control Nuclear fuel assembly coolant control

1989-08-03

1991-11-19

Behrend, Harvey E.

Induced nuclear reactions: processes, systems, and elements

Reactor structures

Orifice or fluid control at inlet or outlet of coolant channels

376236, 376175, 376445, 138 37, 138 46, G21C 330, G21C 1506

Patent

active

050664530

ABSTRACT:
An apparatus for controlling the flow of coolant through a nuclear fuel assembly, in which a coolant flow restrictor 26 having longitudinal ducts 30 is provided with plug members 48, 49, 50 of different lengths. The plug members 48, 49, 50 are moved longitudinally by the effect of neutron induced growth on an actuating member 60. A connecting member 53 converts the growth of the actuating member 60 into a longitudinal movement of the plug members 48, 49, 50 so that they are progressively withdrawn from the flow restrictor 26 to increase the flow of coolant through the flow restrictor 26.

REFERENCES:
patent: 3036965 (1962-05-01), Braun
patent: 3070697 (1962-12-01), Muench
patent: 3208913 (1965-09-01), Hennig
patent: 3214343 (1965-10-01), Natland
patent: 3365368 (1968-01-01), Fray
patent: 3661708 (1972-05-01), Friedland
patent: 4202726 (1980-05-01), Duncombe et al.
patent: 4227967 (1980-10-01), Zebroski
patent: 4431603 (1984-02-01), Hecht
patent: 4493812 (1985-01-01), Christiansen et al.
patent: 4588549 (1986-05-01), Huffer
APEX-492, May 1959, pp. 7, 16, 20, 71-74.

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