Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Moderator rod containing burnable poison and fuel assembly utilizing same










Image Number 19 for United States Patent #5416813.

A moderator rod provided with a burnable poison and disposed in a fuel assembly of a reactor core comprises an outer tube, an inner tube disposed in the outer tube, the outer and inner tubes constituting a double tube structure between which an annular section is formed, and a burnable poison charged in said annular section. A containing amount of the burnable poison per unit area of the annular section is distributed at least one of peripheral direction and axial direction of the double tube structure of the inner and outer tubes. A fuel assembly of a nuclear reactor comprises an upper tie plate, a lower tie plate, a number of fuel rods supported at their upper ends by the upper tie plate and at their lower ends by the lower tie plate and filled up in their inner spaces with a plurality of fuel pellets, at least one of moderator rods containing burnable poison in various states and a channel box. The moderator has an outer tube and an inner tube disposed coaxially in the outer tube. An area of a metal, ceramics or thermet containing the burnable poison is formed at a portion except for portions having axial length corresponding to 1/24 to 1/12 length of the fuel effective length from the upper and lower ends thereof.








 
 
  Recently Added Patents
Dihydronaphthyridinyl(organo)methanone analogs as positive allosteric mGluR5 modulators
Method for producing (meth)acrylic anhydride, method for storing (meth)acrylic anhydride, and method for producing (meth)acrylate
Lighting device with device for regulating the illumination according to the luminance of the illumination field and corresponding use
Optical multiplexer/demultiplexer
Laser marking of a card
Methods and apparatus to identify exposure to 3D media presentations
Magnetoresistive shield with coupled lateral magnet bias
  Randomly Featured Patents
Variable reference voltage circuit for non-volatile memory
Spectral densitometer
Passenger seat support structure
Latching Schmitt trigger circuit
Pipelined chip enable control circuitry and methodology
Method for turning pages of a multi-purpose learning system
7-amino-1-cyclopropyl-4-oxo-1,4-dihydro-quinoline- and naphthyridine-3-carboxylic acids, processes for their preparation and antibacterial agents containing these compounds
Method and system for providing a write pole in an energy assisted magnetic recording disk drive
Time-resolved, laser-induced fluorescence for the characterization of organic material
Automatic facsimile document resizing