Resources Contact Us Home
Nuclear reactor core restraint

Image Number 4 for United States Patent #4859400.

A nuclear reactor fuel core assembly comprises an array of sub-assemblies comprising a central zone of fuel/breeder sub-assemblies (20F) surrounded by an annular zone of shielding sub-assemblies (20S). The fuel/breeder sub-assemblies (20F) are flexibly mounted from the reactor diagrid top plate 26 while the shielding sub-assemblies (20S) are mounted as stiff cantilevers so as to provide resilient restraint against bow of the central sub-assemblies (20S) during reactor operation, the restraint being exerted via abutment pads (40) at the level of the tops of the sub-assemblies (20S, 20F). The central core sub-assemblies (20F) also have abutment pads (34) at a lower level to form a lower restraint plane at this level controlling sub-assembly bowing in the central core zone.

  Recently Added Patents
Plants and seeds of corn variety CV294874
Method and apparatus for controlled reoxygenation
Integrated circuit packaging system with interconnects and method of manufacture thereof
Stacked magnetoresistance device responsive to a magnetic field generally perpendicular to a side face running along a channel of the device
Vanilloid receptor ligands and use thereof for the production of pharmaceutical preparations
System for programming domestic appliances and method for programming assembly-line programmable domestic appliances
Structure of pixel electrode
  Randomly Featured Patents
Disk player, and self-compensating-dynamic-balancer (SCDB) integrated turntable, SCDB integrated clamper and SCDB integrated spindle motor employed in the same
Method and apparatus for automatic generation of telephone call blocking signals
Cheek retractor
Switching power supply device, semiconductor device, and control method
Method for removing organic foulants from anion exchange resin
Compositions and methods for enhanced pharmacological activity of compositions comprising peptide drug substances
Modular progressive hydraulic distributor for lubrication systems
On demand data proxy
Method and apparatus for delivering messages to a device
Methods of fabrication of deaggregated electrically conductive polymers and precursors thereof