Induced nuclear reactions: processes – systems – and elements – Fuel component structure – Plural fuel segments or elements
Patent
1993-07-09
1994-12-06
Walsh, Donald P.
Induced nuclear reactions: processes, systems, and elements
Fuel component structure
Plural fuel segments or elements
376439, G21C 334
Patent
active
053717694
ABSTRACT:
A grid structure is presented in which grid cells are formed by orthogonally intersecting straps prefitted in the longitudinal direction with a plurality of slitted spring frame members. Therefore, when the straps are assembled, the spring frame members are also orthogonally intersected. The spring frame members are made of Inconel and provided with welding tabs while the straps are made of zircalloy and provided with their own welding tabs. Therefore, welding can be performed to firmly join the spring frame members to each other while the straps can also be welded firmly to weld the like metals. The spring sections are thus firmly joined and attached to the straps which are firmly joined. The grid of this configuration thus provides an excellent service life without the losing The fuel rod retaining power, which would result from neutron radiation and thermal damages on holding devices made of zircalloy.
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Baba Atsushi
Imaizumi Masahiko
Kadono Hiroaki
Kato Akihiro
Kawagoe Toshiyuki
Chelliah Meena
Mitsubishi Genshiryoku Kogyo Kabushiki Kaisha
Mitsubishi Nuclear Fuel Co.
Walsh Donald P.
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