Resources Contact Us Home
Moderator rod containing burnable poison and fuel assembly utilizing same

Image Number 12 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
Seat post having a non-uniform cross-section
Light fitting
Optical multiplexer/demultiplexer
Method and system for modifying satellite radio program subscriptions in a mobile vehicle
Quinoline compounds and their use for treating viral infection
Image forming apparatus and information processing apparatus
Lubricating oil compositions
  Randomly Featured Patents
System and method for merging and separating attributes of consoles
Loudspeaker system
Substituted azetidin-2-one antibiotics
Process for the ruthenium-catalysed oxidation of alcohols by means of hypochlorite
Treatment tool for cancer: RNA interference of BCAS2
Electrophotographic toner and process for producing the same
Process and apparatus for the manufacture of disposable pharmaceutical single-dose containers
Readily isolated bispecific antibodies with native immunoglobulin format
Catalytic oxidation of ammonia
Finger ring