Title:
FUEL ASSEMBLY OPTIMIZING FUEL AND WATER DISTRIBUTION
Document Type and Number:
Japanese Patent JP3121434
Kind Code:
B2
Abstract:
PURPOSE: To obtain a fuel rod structure capable of increasing the weight of a fuel as compared with a fuel bundle containing a partial length fuel rod, improving fuel/moderator ratio and further making the flow of fluid in the bundle more uniform in a boiling water reactor.
CONSTITUTION: A fuel bundle has a lower large-diameter tube 24 useful to hold the post of a large-diameter fuel pellet 60 at the lower part of a fuel rod, an upper small-diameter tube 22 useful to hold the post of a small-diameter fuel pellet 51 at the upper part of the rod, and a fuel rod R having a different diameter joint 26 disposed between the upper end of the lower tube 24 and the lower end of the tube 22. In the joint, a transition pellet formed of fuel, fuel containing burnable poison moderator or moderator containing burnable poison is charged.
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Inventors:
Bruce Madsner
Anthony Paul Riese
Eric Bertil Johansson
Anthony Paul Riese
Eric Bertil Johansson
Application Number:
JP12304992A
Publication Date:
December 25, 2000
Filing Date:
May 15, 1992
Export Citation:
Assignee:
GENERAL ELECTRIC COMPANY
International Classes:
G21C3/04; G21C3/16; G21C3/28; G21C3/328; (IPC1-7): G21C3/328; G21C3/28
Domestic Patent References:
| JP6275376A |
Attorney, Agent or Firm:
Kenichi Matsumoto