Nuclear reactor and method of operating same

Details Nuclear reactor and method of operating same Nuclear reactor and method of operating same

G - Physics

21

C

359/28

G21C 19/20 (2006.01)

Patent

CA 1131810

NUCLEAR REACTOR REACTOR AND METHOD OF OPERATING SAME ABSTRACT OF THE DISCLOSURE A method of operating a heavy-water moderated nuclear reactor is described enabling a significant portion of the total core power to be derived from burn- ing natural thorium rather than uranium. In the novel method, interior rod positions of the fuel rod clusters are refueled with thorium-containing rod segments to irradiate the thorium until its multiplication factor is built up to about that of natural uranium, and then the irradiated thorium-containing rod segments are removed from the interior rod positions of the cluster and are utilized to refuel exterior positions the cluster. Also described is a nuclear reactor construction wherein the fuel cluster segments have a mechanical fastener arrangement permitting the quick attachment and detach- ment of the rod segments within the cluster, thereby facilitating the above refueling procedure.

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