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
Polymorphic forms of 3-(1-{3-[5-(1-methyl-piperidin-4-ylmethoxy)-pyrimidin-2-yl]-benzyl}-6-oxo- -1,6-dihydro-pyridazin-3-yl)-benzonitrile hydrochloride salt and processes of manufacturing t
Electronic control apparatus
Motion-compensated prediction of inter-layer residuals
Method and system for prioritizing points of interest for display in a map using category score
Vehicle display system or projection display for a motor vehicle, and calibration method
Aqueous flowable concentrate compositions of a microencapsulated dinitroaniline herbicide
Single-lens reflex digital camera which displays an image for live view
  Randomly Featured Patents
Address decoder and method for ITS accelerated stress testing
Ballast tamping machine
Device for carrying out lateral-flow assays involving more than one analyte
Hydrogen nucleus storage method and hydrogen nucleus storage unit
Multifaceted video benchmarking system, method, and computer program product
Nasal administration of benzodiazepine hypnotics
Chemical laser nozzle blade support system
Return register stack target predictor
Method of treating waste water with activated sludge
Method and apparatus for implementing generic access network functionality in a wireless communication device