Double lock joint for attaching top nozzle to guide thimbles of nuclear fuel assembly
Abstract
In a reconstitutable fuel assembly including at least one guide thimble with an upper end portion having a central axis and a top nozzle with an adapter plate having top and bottom spaced apart surfaces and at least one passageway extending between the surfaces, a double lock joint structure is described for attaching the top nozzle adapter plate in releasable locking engagement upon the guide thimble upper end portion, comprising: (a) means defined in the upper end portion of the guide thimble to permit inward elastic collapse; (b) upper means formed in the upper end portion of the guide thimble so as to provide the upper end portion at the location of the upper means with a diametric size greater than that of the adapter plate passageway; (c) lower means formed in the upper end portion of the guide thimble so as to provide the upper end portion at the location of the lower means with a diametric size greater than that of the adapter plate passageway when the guide thimble upper end portion is at either one of its expanded and collapsed positions; (d) the upper means being axially displaced from the lower means through a distance approximately equalmore »
- Inventors:
- Publication Date:
- OSTI Identifier:
- 5857424
- Patent Number(s):
- US 4699759
- Assignee:
- Westinghouse Electric Corp., Pittsburgh, PA
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: Filed date 12 Jun 1985
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 22 GENERAL STUDIES OF NUCLEAR REACTORS; FUEL ASSEMBLIES; FASTENERS; JOINTS; NOZZLES; DIMENSIONS; INSTALLATION; PLATES; SIZING; SLEEVES; 220300* - Nuclear Reactor Technology- Fuel Elements
Citation Formats
Feild, Jr, A L. Double lock joint for attaching top nozzle to guide thimbles of nuclear fuel assembly. United States: N. p., 1987.
Web.
Feild, Jr, A L. Double lock joint for attaching top nozzle to guide thimbles of nuclear fuel assembly. United States.
Feild, Jr, A L. 1987.
"Double lock joint for attaching top nozzle to guide thimbles of nuclear fuel assembly". United States.
@article{osti_5857424,
title = {Double lock joint for attaching top nozzle to guide thimbles of nuclear fuel assembly},
author = {Feild, Jr, A L},
abstractNote = {In a reconstitutable fuel assembly including at least one guide thimble with an upper end portion having a central axis and a top nozzle with an adapter plate having top and bottom spaced apart surfaces and at least one passageway extending between the surfaces, a double lock joint structure is described for attaching the top nozzle adapter plate in releasable locking engagement upon the guide thimble upper end portion, comprising: (a) means defined in the upper end portion of the guide thimble to permit inward elastic collapse; (b) upper means formed in the upper end portion of the guide thimble so as to provide the upper end portion at the location of the upper means with a diametric size greater than that of the adapter plate passageway; (c) lower means formed in the upper end portion of the guide thimble so as to provide the upper end portion at the location of the lower means with a diametric size greater than that of the adapter plate passageway when the guide thimble upper end portion is at either one of its expanded and collapsed positions; (d) the upper means being axially displaced from the lower means through a distance approximately equal to that between the top and bottom surfaces of the adapter plate.},
doi = {},
url = {https://www.osti.gov/biblio/5857424},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Oct 13 00:00:00 EDT 1987},
month = {Tue Oct 13 00:00:00 EDT 1987}
}