Induced nuclear reactions: processes – systems – and elements – Fuel component structure – Having particular end closure or seal
Patent
1993-09-10
2000-08-15
Wasil, Daniel D.
Induced nuclear reactions: processes, systems, and elements
Fuel component structure
Having particular end closure or seal
G21C 310
Patent
active
061047732
ABSTRACT:
A fuel rod for a nuclear reactor includes a metal cladding tube being filled with nuclear fuel and having ends, an outer surface, and a longitudinal axis. A metal seal plug is welded to one of the ends of the cladding tube at a transition point, defining an annular bead disposed on the outer surface of the cladding tube at the transition point. The annular bead has a cylindrical outer jacket surface extending substantially parallel to the longitudinal axis of the cladding tube. The annular bead has material being formed of the metal of the cladding tube and the metal of the seal plug. A welding apparatus for producing the fuel rod includes an electrode having a through bore formed therein for receiving one end of a cladding tube. A counter electrode is displaceable relative to the electrode for holding a seal plug to be welded to the one end of the cladding tube. The electrode has a cylindrical step formed therein at an end of the through bore facing toward the counter electrode. The cylindrical step has a diameter being greater than the diameter of the through bore.
REFERENCES:
patent: 3183066 (1965-05-01), Lessmann et al.
patent: 3460237 (1969-08-01), McClintock
patent: 3959058 (1976-05-01), Rath et al.
patent: 4865804 (1989-09-01), McGeary et al.
Crede Gerd-Dieter
Schleich Rainer
Greenberg Laurence A.
Lerner Herbert L.
Siemens Aktiengesellschaft
Wasil Daniel D.
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