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Title: FUEL ELEMENT FOR NUCLEAR REACTORS

Abstract

Nuclear reactor fuel elements of the type in which the flssionsble material is in ceramic form, such as uranium dioxide, are described. The fuel element is comprised of elongated inner and outer concentric spaced tubular members providing an annular space therebetween for receiving the fissionable material, the annular space being closed at both ends and the inner tube being open at both ends. The fuel is in the form of compressed pellets of ceramic fissionsble material having the configuration of split bushings formed with wedge surfaces and arranged in seriated inner and outer concentric groups which are urged against the respective tubes in response to relative axial movement of the pellets in the direction toward each other. The pairs of pellets are axially urged together by a resilient means also enclosed within the annulus. This arrangement-permits relative axial displacement of the pellets during use dial stresses on the inner and outer tube members and yet maintains the fuel pellets in good thermal conductive relationship therewith.

Inventors:
Publication Date:
Research Org.:
Originating Research Org. not identified
OSTI Identifier:
4036309
Patent Number(s):
US 2992179
Assignee:
U.S. Atomic Energy Commission DTIE; NSA-15-023109
NSA Number:
NSA-15-023109
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-61
Country of Publication:
United States
Language:
English
Subject:
REACTOR TECHNOLOGY; CERAMICS; CONFIGURATION; FISSIONABLE MATERIALS; FUEL ELEMENTS; HIGH TEMPERATURE; MOTION; PATENT; PELLETS; REACTORS; THERMAL CONDUCTIVITY; THERMAL STRESSES; TUBES; URANIUM DIOXIDE

Citation Formats

Bassett, C.H. FUEL ELEMENT FOR NUCLEAR REACTORS. United States: N. p., 1961. Web.
Bassett, C.H. FUEL ELEMENT FOR NUCLEAR REACTORS. United States.
Bassett, C.H. Tue . "FUEL ELEMENT FOR NUCLEAR REACTORS". United States. doi:.
@article{osti_4036309,
title = {FUEL ELEMENT FOR NUCLEAR REACTORS},
author = {Bassett, C.H.},
abstractNote = {Nuclear reactor fuel elements of the type in which the flssionsble material is in ceramic form, such as uranium dioxide, are described. The fuel element is comprised of elongated inner and outer concentric spaced tubular members providing an annular space therebetween for receiving the fissionable material, the annular space being closed at both ends and the inner tube being open at both ends. The fuel is in the form of compressed pellets of ceramic fissionsble material having the configuration of split bushings formed with wedge surfaces and arranged in seriated inner and outer concentric groups which are urged against the respective tubes in response to relative axial movement of the pellets in the direction toward each other. The pairs of pellets are axially urged together by a resilient means also enclosed within the annulus. This arrangement-permits relative axial displacement of the pellets during use dial stresses on the inner and outer tube members and yet maintains the fuel pellets in good thermal conductive relationship therewith.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 11 00:00:00 EDT 1961},
month = {Tue Jul 11 00:00:00 EDT 1961}
}