Induced nuclear reactions: processes – systems – and elements – Handling of fission reactor component structure within... – Fuel component
Patent
1984-02-09
1987-02-24
Kyle, Deborah L.
Induced nuclear reactions: processes, systems, and elements
Handling of fission reactor component structure within...
Fuel component
376268, 376353, 376460, G21C 1920
Patent
active
046456406
ABSTRACT:
A nuclear reactor refueling system for a liquid metal-cooled fast breeder reactor includes a large rotatable plug (18) eccentrically mounted relative to the reactor core (12), and a small rotatable plug (24) mounted within the large plug (18). A fuel handling machine (28) is rotatably mounted upon the small plug (24), and the eccentric mounting of the large plug (18) permits the fuel handling machine (28) to access all areas of the reactor core (12) as well as a fuel transfer station or port (34) located externally of the reactor core barrel (16) yet internally of the reactor pressure vessel. A unique six-fingered star-shaped upper internals structure (36) is eccentrically mounted upon the large plug (18) so as to be concentrically disposed relative to the core (12) when the reactor is in operation yet permitting access to the central-most fuel assemblies (14) of the core (12) as the large rotatable plug (18) is rotated during refueling operations. The uniquely configured upper internals structure (36 ), as well as the eccentric mounting of the large plug (18) relative to the core barrel (16) and the provision of the small plug (24) eccentrically mounted upon the large plug (18) permits the diametrical extent of the large plug (18) to be precisely the same as that of the core barrel (16).
REFERENCES:
patent: 3635792 (1972-01-01), Barker
patent: 3773616 (1973-11-01), Aubert
patent: 3841964 (1974-10-01), Dumayne
patent: 3862001 (1975-01-01), Marmonier et al.
patent: 3948724 (1976-04-01), Rothfuss
patent: 4071402 (1978-01-01), Wade
patent: 4142935 (1979-03-01), Wade
Kyle Deborah L.
Petrow Joel
Wasil Dan
Westinghouse Electric Corp.
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