Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
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
Telephone line seizure module
Systems, methods and apparatus for payment processing
Display panel and gate driving circuit and driving method for gate driving circuit
Piano keyboard with key touch point detection
Diameter signaling for mobile IPv4
Storage device performance alignment notification
System and method for generating profile morphing using cephalometric tracing data
  Randomly Featured Patents
SRAM cell
ErbB interface peptidomimetics and methods of use thereof
Semiconductor device including a light receiving element, an amplifier, and an equalizer having a capacitor with the same laminate structure as the light receiving element
Photo-patternable dielectric materials and formulations and methods of use
Engine control apparatus
Piezoelectric revolving resonator and single-phase ultrasonic motor
Sheet sorter and an image forming apparatus
Semiconductor phase change memory using multiple phase change layers
Method of fabricating semiconductor integrated circuits
Adjustable seating system