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Title: Top nozzle mounted reusable fastener device in a reconstitutable nuclear fuel assembly

Abstract

This patent describes a fuel assembly including a top nozzle with an adapter plate having at least one hole and at least one longitudinal structural member with a threaded upper end portion extending through the adapter plate hole so as to project therefrom, a reusable fastener device comprising: (a) attaching means threadable onto and from the upper end portion of the structural member between fastened and unfastened positions therewith for attaching and detaching the structural member to and from the top nozzle adapter plate; and (b) retaining means mounted on the top nozzle adapter plate so as to extend about the adapter plate hole and project outwardly from the adapter plate; (c) the retaining means including (i) a tubular hollow body having upper and lower opposite ends and a plurality of upper sectors connected to and extending radially inwardly from the upper end of the tubular body, (ii) the upper sectors together defining a central opening sized to receive the central stem of the attaching means and an interrupted upper surface surrounding the central opening; (iii) the upper sectors being disposed in a location spaced from the adapter plate at which their interrupted upper surface will be contacted by themore » lower surface of the upper flange of the attaching means when the central stem thereof is threaded onto the upper end portion of the structural member to the fastened position.« less

Inventors:
; ;
Publication Date:
OSTI Identifier:
5992399
Patent Number(s):
US 4687631
Application Number:
TRN: 87-035119
Assignee:
Westinghouse Electric Corp., Pittsburgh, PA
Resource Type:
Patent
Resource Relation:
Patent File Date: Filed date 12 Sep 1985
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; FUEL ASSEMBLIES; NOZZLES; POWER REACTORS; FASTENERS; FASTENING; PLATES; THREADED JOINTS; FABRICATION; JOINING; JOINTS; REACTORS; 220300* - Nuclear Reactor Technology- Fuel Elements

Citation Formats

Wilson, J F, Gjertsen, R K, and Ferrari, H M. Top nozzle mounted reusable fastener device in a reconstitutable nuclear fuel assembly. United States: N. p., 1987. Web.
Wilson, J F, Gjertsen, R K, & Ferrari, H M. Top nozzle mounted reusable fastener device in a reconstitutable nuclear fuel assembly. United States.
Wilson, J F, Gjertsen, R K, and Ferrari, H M. 1987. "Top nozzle mounted reusable fastener device in a reconstitutable nuclear fuel assembly". United States.
@article{osti_5992399,
title = {Top nozzle mounted reusable fastener device in a reconstitutable nuclear fuel assembly},
author = {Wilson, J F and Gjertsen, R K and Ferrari, H M},
abstractNote = {This patent describes a fuel assembly including a top nozzle with an adapter plate having at least one hole and at least one longitudinal structural member with a threaded upper end portion extending through the adapter plate hole so as to project therefrom, a reusable fastener device comprising: (a) attaching means threadable onto and from the upper end portion of the structural member between fastened and unfastened positions therewith for attaching and detaching the structural member to and from the top nozzle adapter plate; and (b) retaining means mounted on the top nozzle adapter plate so as to extend about the adapter plate hole and project outwardly from the adapter plate; (c) the retaining means including (i) a tubular hollow body having upper and lower opposite ends and a plurality of upper sectors connected to and extending radially inwardly from the upper end of the tubular body, (ii) the upper sectors together defining a central opening sized to receive the central stem of the attaching means and an interrupted upper surface surrounding the central opening; (iii) the upper sectors being disposed in a location spaced from the adapter plate at which their interrupted upper surface will be contacted by the lower surface of the upper flange of the attaching means when the central stem thereof is threaded onto the upper end portion of the structural member to the fastened position.},
doi = {},
url = {https://www.osti.gov/biblio/5992399}, journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {8}
}