Induced nuclear reactions: processes – systems – and elements – Fuel component structure – Plural fuel segments or elements
Patent
1998-02-12
2000-05-09
Jordan, Charles T.
Induced nuclear reactions: processes, systems, and elements
Fuel component structure
Plural fuel segments or elements
376419, 376428, 376462, G21C 332, G21C 300, G21C 330
Patent
active
060614161
ABSTRACT:
Each of short-length fuel rods 3 is arranged at a position other than in 3.times.3 corner regions 6 to 9 in such a manner as not to be simultaneously adjacent to a water rod 5 and others of the short-sized fuel rods. Gd fuel rods 4 are arranged at positions excluding the outer periphery, and the number of those of the Gd fuel rods 4 adjacent to the short-length fuel rods 3 is one-half or less the total number of the Gd fuel rods. At a transverse cross-section of a region upward from upper ends of the short-sized fuel rods 3, the amount of burnable poison contained in a polygonal region 10 whose vertexes are located at centers of those of the first fuel rods 3 arranged at the outermost layer is smaller than the amount of burnable poison outside the region 10. With this configuration, a critical power can be improved in consideration of both a distribution of the flow of coolant and a distribution of a thermal power in the fuel assembly.
REFERENCES:
patent: 4683113 (1987-07-01), Mochida et al.
patent: 4876063 (1989-10-01), Johansson
patent: 4968479 (1990-11-01), Ogiya et al.
patent: 5008070 (1991-04-01), Aoyama et al.
patent: 5017332 (1991-05-01), Dix et al.
patent: 5112570 (1992-05-01), Dix et al.
patent: 5249211 (1993-09-01), Nagano et al.
patent: 5367547 (1994-11-01), Hida et al.
patent: 5377247 (1994-12-01), Yoshioka et al.
patent: 5388132 (1995-02-01), Aoyama et al.
patent: 5432829 (1995-07-01), Aoyama et al.
patent: 5544211 (1996-08-01), Haikawa et al.
Aoyama Motoo
Koyama Junichi
Nishida Koji
Yamashita Jun-ichi
Hitachi , Ltd.
Jordan Charles T.
Keith Jack
LandOfFree
Fuel assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Fuel assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Fuel assembly will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1072429