Nuclear reactor fuel assembly

Details Nuclear reactor fuel assembly Nuclear reactor fuel assembly

1987-02-02

1989-06-27

Walsh, Donald P.

Induced nuclear reactions: processes, systems, and elements

Fuel component structure

Plural fuel segments or elements

376462, 420422, 148 115Q, G21C 334

Patent

active

048428140

ABSTRACT:
A channel box and/or a spacer of a fuel assembly is a welded construction and made of a Zr-Nb-Sn alloy comprising 0.5-2.2 wt % Nb, 0.5-1.5 wt % Sn contained so as to satisfy the relation of Sn(wt %) 22.times.Nb(wt %)--3.0, and balance Zr or a Zr-Nb-Sn-Mo alloy comprising 0.5-2.2 wt % Nb, 0.5-1.5 wt % Sn contained so as to satisfy the relation of Sn(wt %).gtoreq.2.times.Nb(wt %)--0.3, 0.1-0.8 wt % Mo, and balance Zr. The welded portion, its heat affected zone and the unwelded portion of the channel box and/or the spacer have substantially the whole equilibrium phase structure.

REFERENCES:
patent: 3121034 (1964-02-01), Anderko
patent: 4212686 (1980-07-01), Lunde
patent: 4664727 (1987-05-01), Inagaki
Cheng, et al., "Corrosion Performance of Some Zirconium Alloys Irradiated in the Steam Generating Heavy Water Reactor--Winfrith Proceeding on Environmental Degradation of Materials in Nuclear Power Systems--Water Reactors", Aug. 22-25, 1983, pp. 273-296.

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