Induced nuclear reactions: processes – systems – and elements – Fuel component structure – Plural fuel segments or elements
Patent
1991-03-01
1993-02-16
Walsh, Donald P.
Induced nuclear reactions: processes, systems, and elements
Fuel component structure
Plural fuel segments or elements
376445, G21C 332
Patent
active
051868903
ABSTRACT:
A fuel containment containing nuclear fuel rods of a fuel assembly which will be loaded into a reactor core of a fast breeder reactor is formed narrow in width at middle portion of vertical direction and long in length of vertical direction. And as being used in the reactor core, the middle portion of vertical direction of the fuel containment, wherein both of heat generation and swelling are larger than that of other portion, expands more than other portion, but undesirable contact with adjacent fuel assemblies can be avoided as the middle portion is previously formed narrow. Moreover, the other portions, wherein expansion of the fuel containment and undesirable contact with adjacent fuel assemblies are barely caused, are formed previously wide in width by enlarging the coolant flow path of the fuel containment, whereby pressure drop of coolant of coolant used in the reactor core can be reduced.
REFERENCES:
patent: 3575808 (1971-04-01), Jakub et al.
patent: 4097331 (1978-06-01), Betten
patent: 4970047 (1990-11-01), Ueda et al.
Kaneto Kunikazu
Ohashi Masahisa
Oomasa Yoshiaki
Sawada Shusaku
Sogame Motomu
Hitachi , Ltd.
Voss Frederick H.
Walsh Donald P.
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