US Patent No: 4,348,353

Number of patents in Portfolio can not be more than 2000

Nuclear reactor fuel assembly duct-tube-to-inlet-nozzle attachment system

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Importance

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Abstract

A reusable system for removably attaching the lower end 21 of a nuclear reactor fuel assembly duct tube to an upper end 11 of a nuclear reactor fuel assembly inlet nozzle. The duct tube's lower end 21 has sides terminating in locking tabs 22 which end in inwardly-extending flanges 23. The flanges 23 engage recesses 13 in the top section 12 of the inlet nozzle's upper end 11. A retaining collar 30 slides over the inlet nozzle's upper end 11 to restrain the flanges 23 in the recesses 13. A locking nut 40 has an inside threaded portion 41 which engages an outside threaded portion 15 of the inlet nozzle's upper end 11 to secure the retaining collar 30 against protrusions 24 on the duct tube's sides.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
ENERGY, UNITED STATES DEPARTMENT OFWASHINGTON, DC4570

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Christiansen, David W Kennewick, WA 19 80
Smith, Bob G Richland, WA 3 25

Cited Art

Patent Info (Count) # Cites Year
 
GA TECHNOLOGIES, INC., (1)
4,194,948 Locking support for nuclear fuel assemblies 9 1977

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
Westinghouse Electric Corp. (3)
4,560,532 Nuclear fuel assembly 34 1983
4,664,879 Guide tube flow restrictor 5 1984
4,818,473 Fuel bundle 11 1987
 
ENERGY, UNITED STATES DEPARTMENT OF (2)
4,515,750 Sealing coupling 25 1982
4,568,111 Detachable connection for a nuclear reactor fuel assembly 2 1983
 
FRAMATOME ANP, INC. (2)
5,383,227 Method for modifying existing transition pieces in bottom entry nuclear fuel assemblies for reducing coolant pressure drop 1 1993
6,934,351 Boiling water reactor fuel assembly 1 2002
 
COMMISSARIAT A L'ENERGIE ATOMIQUE (1)
4,617,171 Device for fixing a guide tube in a recess on the end fitting of a nuclear reactor fuel assembly 15 1983
 
Novatome (1)
4,495,138 Junction device between the delivery duct of a primary pump and a duct joined to the core support of a fast neutron nuclear reactor 1 1982