Resources Contact Us Home
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
Hybrid fiber/copper cable preparation tool
Automatic placement of precision cuts
Positioning network availability and reliability based routing
Electronic delivery of admission tickets direct to a purchaser
Method and system for management of synchronization of a mobile electronic device
Carbon grit
Unbundling packets received in wireless communications
  Randomly Featured Patents
Method of mixing raw material composition of highly ignitable or explosive material
VHL peptide
Support stand for golf bag
Power conserving mobile telephone usable as a portable phone and as an installed phone
Control apparatus and control method using mobile communication terminal
Via fill compositions for direct attach of devices and methods for applying same
Waterflood oil recovery process employing stabilized biopolymers
Card printer and method of printing on cards using the same
Jigsaw puzzle and technique