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Machine translation
1. (WO1979000742) FUEL ASSEMBLY
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/1979/000742    International Application No.:    PCT/JP1979/000038
Publication Date: 04.10.1979 International Filing Date: 19.02.1979
IPC:
G21C 3/328 (2006.01), G21C 7/00 (2006.01), G21C 3/32 (2006.01)
Applicants:
Inventors:
Priority Data:
78/28911 13.03.1978 JP
Title (EN) FUEL ASSEMBLY
(FR) SYSTEME A CARBURANT
Abstract: front page image
(EN)It is preferable, in a high burn-up degree range, that the output distribution curve in the axial direction of a reactor be flat. To this end, a mean infinite multiplication factor in an upper area in the axial direction of a core should be made lower than a mean infinite multiplication factor in a lower area, in view of the fact that volume coefficient has a distribution along the axial direction. It particularly becomes possible by lowering a mean enrichment of fuel located at the upper area with respect to a mean enrichment of fuel located at the lower area.
(FR)Il est preferable que, dans une plage de consommation elevee, la courbe de distribution de puissance dans le sens axial d"un reacteur soit horizontale. A cet effet, il faut rendre un facteur de multiplication infini moyen dans une zone superieure, dans le sens axial d"un noyau, inferieur a un facteur de multiplication infini moyen dans une zone inferieure tout en tenant comptant du fait que la distribution d"un coefficient d"un volume vide est axiale. Cela devient particulierement possible en abaissant un enrichissement moyen de carburant au niveau de la zone superieure par rapport a un enrichissement moyen de carburant au niveau de la zone inferieure.
Designated States:
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)