Resources Contact Us Home
Reconstitutable nuclear fuel assembly having locking tubes with dimples

Image Number 2 for United States Patent #4738821.

In a reconstitutable nuclear fuel assembly, a top-nozzle-to-control-rod-guide-thimble attachment system employing a reusable locking tube having dimples. The guide thimble has longitudinal slots defining fingers therebetween. The fingers have rim (bulge) portions which engage a groove in the control rod passageway of the top nozzle adaptor plate for top-nozzle-to-guide-thimble attachment. The finger rim portions are prevented from moving radially inward, and thus leaving the groove, by a locking tube placed in the guide thimble. The locking tube has dimples at two elevations. The dimples interact with the other components of the attachment system to assure proper seating of the locking tube during locking tube installation and to assure against unintentional longitudinal movement of the locking tube during fuel assembly handling. An improperly seated locking tube complicates the underwater fuel assembly reconstitution operation.

  Recently Added Patents
Image decolorizing device
System, method and program product for guiding correction of semantic errors in code using collaboration records
Display device substrate, method for manufacturing the same, display device, method for forming multi-layer wiring, and multi-layer wiring substrate
Decrementing settings for a range of power caps when a power cap is exceeded
Sample analyzing device
Synergistic compositions for the treatment of topical viral infections
Devices including composite thermal capacitors
  Randomly Featured Patents
Nucleic acid molecules from plants encoding enzymes which participate in starch synthesis
Dischargeable storage device for distributing food over a surface
LCD device comprising a polarizing domain of a polarizing sheet having a transmission angle that is the same as the liquid crystal alignment angle of the corresponding alignment domain of a pi
Method and tool for use in commmencing the drilling of a deviated well
Low inductance multilayer capacitor
Method for adding solid zinc-aluminum to galvanizing baths
Unstructured recombinant polymers and uses thereof
Manufacturing method of liquid jet recording head using a laser working method
Racket and projectile game
Electronics rack having an angled panel