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










Image Number 17 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
Storage basket with lid
Inspection tool for top guides of a boiling water reactor
Power supply device
Composition comprising a mixture of dextro- and levo-amphetamines complexed with ion-exchange resin particles to form drug resin particles
Geographically self-labeling access points
Integrated advance copper fuse combined with ESD/over-voltage/reverse polarity protection
Light-emitting diode package and method for manufacturing the same
  Randomly Featured Patents
Suspended heel-piece for the safety binding of a ski
Two-way plugs for wells
Racing saddle
Tiltable spring-biased chair
Coordinate input apparatus with correction resistance for rectangular, spaced resistance surfaces
Antifuse for use with low .kappa. dielectric foam insulators
Big bale handling system
Apparatus for the production of short warps especially for cloth designs in multicolor weaving
Dicing method using a die attach film on an adhesive sheet
Apparatus for cutting and preparing cables