Articulated fuel assembly

Details Articulated fuel assembly Articulated fuel assembly

1976-03-08

1978-02-21

Engle, Samuel W.

176 40, 176 87, 176 50, 176 67, G21C 730

Patent

active

040750582

ABSTRACT:
An articulated fuel assembly for the core of a fast spectrum reactor comprising an elongated shroud enclosing a cluster of fuel pins, a support foot assembly supporting the fuel assembly in the reactor core and an articulating connector link joining the support foot assembly and the lower end of the elongated shroud. The upper end of the elongated shroud and the support foot assembly are adapted to be fixedly restrained against lateral movement when the assembly is placed in the reactor core. The articulating connector link is such as to permit free lateral deflection of the lower end of the shroud relative to the upper end of the shroud and the foot assembly. Such an arrangement increases the reliability of the fuel assembly and safely accommodates the physical distortions in the fuel assemblies caused by neutron induced swelling of the members and thermally induced expansions thereof by reducing stresses in the structural parts of the assembly and by insuring a negative reactivity for the core as the lower ends of the fuel assemblies are laterally displaced.

REFERENCES:
patent: T911015 (1973-06-01), Garkisch et al.
patent: 1187642 (1916-06-01), Milz
patent: 3219535 (1965-10-01), Robbins
patent: 3275521 (1966-09-01), Schluderberg et al.
patent: 3433504 (1969-03-01), Hanes
patent: 3629070 (1971-12-01), Stankiewicz
patent: 3671394 (1972-06-01), Bernath et al.
patent: 3682774 (1972-08-01), Beyer
patent: 3708393 (1973-01-01), Waymire et al.
patent: 3753856 (1973-08-01), Ash

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