skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Nuclear reactor spacer grid and ductless core component

Abstract

The invention relates to a nuclear reactor spacer grid member for use in a liquid cooled nuclear reactor and to a ductless core component employing a plurality of these spacer grid members. The spacer grid member is of the egg-shell type and is constructed so that the walls of the cell members of the grid member are formed of a single thickness of metal to avoid tolerance problems. Within each cell member is a hydraulic spring which laterally constrains the nuclear material bearing rod which passes through each cell member against a hardstop in response to coolant flow through the cell member. This hydraulic spring is also suitable for use in a water cooled nuclear reactor. A core component constructed of, among other components, a plurality of these spacer grid members, avoids the use of a full length duct by providing spacer sleeves about the sodium tubes passing through the spacer grid members at locations between the grid members, thereby maintaining a predetermined space between adjacent grid members.

Inventors:
 [1];  [2]
  1. (Kennewick, WA)
  2. (Richland, WA)
Issue Date:
Research Org.:
WESTINGHOUSE HANFORD CO
OSTI Identifier:
866905
Patent Number(s):
4818479
Assignee:
United States of America as represented by United States (Washington, DC) OSTI
DOE Contract Number:  
AC06-76FF02170
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
nuclear; reactor; spacer; grid; ductless; core; component; relates; liquid; cooled; employing; plurality; egg-shell; type; constructed; walls; cell; formed; single; thickness; metal; avoid; tolerance; hydraulic; spring; laterally; constrains; material; bearing; rod; passes; hardstop; response; coolant; flow; suitable; water; components; avoids; length; duct; providing; sleeves; sodium; tubes; passing; locations; maintaining; predetermined; space; adjacent; core component; nuclear reactor; coolant flow; cooled nuclear; spacer grid; nuclear material; water cooled; liquid cooled; tubes passing; reactor space; reactor spacer; material bearing; tubes pass; ductless core; /376/976/

Citation Formats

Christiansen, David W., and Karnesky, Richard A. Nuclear reactor spacer grid and ductless core component. United States: N. p., 1989. Web.
Christiansen, David W., & Karnesky, Richard A. Nuclear reactor spacer grid and ductless core component. United States.
Christiansen, David W., and Karnesky, Richard A. Sun . "Nuclear reactor spacer grid and ductless core component". United States. https://www.osti.gov/servlets/purl/866905.
@article{osti_866905,
title = {Nuclear reactor spacer grid and ductless core component},
author = {Christiansen, David W. and Karnesky, Richard A.},
abstractNote = {The invention relates to a nuclear reactor spacer grid member for use in a liquid cooled nuclear reactor and to a ductless core component employing a plurality of these spacer grid members. The spacer grid member is of the egg-shell type and is constructed so that the walls of the cell members of the grid member are formed of a single thickness of metal to avoid tolerance problems. Within each cell member is a hydraulic spring which laterally constrains the nuclear material bearing rod which passes through each cell member against a hardstop in response to coolant flow through the cell member. This hydraulic spring is also suitable for use in a water cooled nuclear reactor. A core component constructed of, among other components, a plurality of these spacer grid members, avoids the use of a full length duct by providing spacer sleeves about the sodium tubes passing through the spacer grid members at locations between the grid members, thereby maintaining a predetermined space between adjacent grid members.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1989},
month = {1}
}

Patent:

Save / Share: