Fuel assembly

Details Fuel assembly Fuel assembly

1984-07-30

1987-08-25

Kyle, Deborah L.

Induced nuclear reactions: processes, systems, and elements

Fuel component structure

Plural fuel segments or elements

376349, G21C 332, G21C 700

Patent

active

046891951

ABSTRACT:
In a nuclear reactor, gaps are defined between fuel assemblies so that moderators can be inserted. Hence, the nuclear characteristics vary between the central portion and periphery of the fuel assembly so that the local output peaking becomes greater on the periphery of the fuel assembly. The present invention flattens the local output peaking by providing that the quantity of a nuclear fuel material per fuel rod loaded in the fuel rods on the periphery of the fuel assembly is smaller than the quantity of the fuel material per fuel rod loaded in the fuel rods at the central portion of the fuel assembly. Any one of the following three constructions can be used:

REFERENCES:
patent: 3928128 (1975-12-01), Kollmar et al.
patent: 4059484 (1977-11-01), Bupp et al.
patent: 4229258 (1980-10-01), Takeda et al.
patent: 4324615 (1982-04-01), Kobayashi et al.
patent: 4483818 (1984-11-01), Yamashita et al.
"Fundamental Aspects of Nuclear Reactor Fuel Elements", 1976, p. 114, Olander.
"Mark's Standard Handbook for Mechanical Engineers", 1969, pp. 9-124, Baumeister et al.

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