Induced nuclear reactions: processes – systems – and elements – Fuel component structure – Plural fuel segments or elements
Patent
1991-01-09
1992-07-07
Hunt, Brooks H.
Induced nuclear reactions: processes, systems, and elements
Fuel component structure
Plural fuel segments or elements
376443, 376439, G21C 332
Patent
active
051280981
ABSTRACT:
A fuel assembly comprises a plurality of fuel rods, a lower tie plate for supporting lower ends of the fuel rods, and a channel box surrounding a bundle of the fuel rods and the circumference of the lower tie plate to thereby define a cooling water leak passage between the lower tie plate and the channel box. The fuel assembly includes a venturi provided in the lower tie plate for generating a force tending to attract the channel box toward the lower tie plate under the action of a leak stream of the cooling water passing through the cooling water leak passage. The fuel assembly also includes an arrangement provided in the lower tie plate for suppressing vibrations of the channel box caused upon an influence of the venturi.
REFERENCES:
patent: 4035233 (1977-07-01), Williamson et al.
patent: 4889684 (1989-12-01), Johansson
patent: 4970047 (1990-11-01), Ueda et al.
Hayashi Tatsuo
Maru Akira
Mizuno Tadashi
Nakajima Junjiro
Nakamura Shozo
Chelliah Meena
Hitachi , Ltd.
Hunt Brooks H.
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