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

Patent · Fri Jan 01 00:00:00 EST 1982

OSTI ID:864328

Christiansen, David W.; Smith, Bob G.

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.

• Research Organization: Hanford Engineering Development Lab., Richland, WA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: EY-76-C-14-2170
• Assignee: The United States of America as represented by the United States Department of Energy (Washington, DC)
• Patent Number(s): 4,348,353
• Application Number: 06/206231
• OSTI ID: 864328
• Resource Relation: Patent File Date: 1980 Nov 12
• Country of Publication: United States
• Language: English

Related Subjects

nuclear
reactor
fuel
assembly
duct-tube-to-inlet-nozzle
attachment
reusable
removably
attaching
21
duct
tube
upper
11
inlet
nozzle
terminating
locking
tabs
22
inwardly-extending
flanges
23
engage
recesses
13
top
section
12
retaining
collar
30
slides
restrain
nut
40
inside
threaded
portion
41
engages
outside
15
secure
protrusions
24
threaded portion
inlet nozzle
nuclear reactor
reactor fuel
fuel assembly
duct tube
removably attaching
extending flange
top section
nozzle attachment
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