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Title: Nuclear core and fuel assemblies

Abstract

A fast flux nuclear core of a plurality of rodded, open-lattice assemblies having a rod pattern rotated relative to a rod support structure pattern. Elongated fuel rods are oriented on a triangular array and laterally supported by grid structures positioned along the length of the assembly. Initial inter-assembly contact is through strongbacks at the corners of the support pattern and peripheral fuel rods between adjacent assemblies are nested so as to maintain a triangular pitch across a clearance gap between the other portions of adjacent assemblies. The rod pattern is rotated relative to the strongback support pattern by an angle .alpha. equal to sin .sup.-1 (p/2c), where p is the intra-assembly rod pitch and c is the center-to-center spacing among adjacent assemblies.

Inventors:
 [1]
  1. (Monroeville, PA)
Issue Date:
Research Org.:
Westinghouse Electric Corp
OSTI Identifier:
863964
Patent Number(s):
4285771
Assignee:
Westinghouse Electric Corp. (Pittsburgh, PA) OSTI
DOE Contract Number:  
EY-76-C-02-3045
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
nuclear; core; fuel; assemblies; fast; flux; plurality; rodded; open-lattice; rod; pattern; rotated; relative; support; structure; elongated; rods; oriented; triangular; array; laterally; supported; grid; structures; positioned; length; assembly; initial; inter-assembly; contact; strongbacks; corners; peripheral; adjacent; nested; maintain; pitch; clearance; gap; portions; strongback; angle; alpha; equal; -1; 2c; intra-assembly; center-to-center; spacing; rod support; nuclear core; fuel rods; fuel assemblies; fuel rod; support structure; triangular array; rotated relative; grid structure; elongated fuel; peripheral fuel; grid structures; /376/976/

Citation Formats

Downs, Robert E. Nuclear core and fuel assemblies. United States: N. p., 1981. Web.
Downs, Robert E. Nuclear core and fuel assemblies. United States.
Downs, Robert E. Thu . "Nuclear core and fuel assemblies". United States. https://www.osti.gov/servlets/purl/863964.
@article{osti_863964,
title = {Nuclear core and fuel assemblies},
author = {Downs, Robert E.},
abstractNote = {A fast flux nuclear core of a plurality of rodded, open-lattice assemblies having a rod pattern rotated relative to a rod support structure pattern. Elongated fuel rods are oriented on a triangular array and laterally supported by grid structures positioned along the length of the assembly. Initial inter-assembly contact is through strongbacks at the corners of the support pattern and peripheral fuel rods between adjacent assemblies are nested so as to maintain a triangular pitch across a clearance gap between the other portions of adjacent assemblies. The rod pattern is rotated relative to the strongback support pattern by an angle .alpha. equal to sin .sup.-1 (p/2c), where p is the intra-assembly rod pitch and c is the center-to-center spacing among adjacent assemblies.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1981},
month = {1}
}

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