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Title: JACKETED URANIUM SLUG

Abstract

Fuel elements for nuclear reactors are described. Eacb fuel element is comprised of a solid cylindrical slug containing fissionable material enclosed within a fluid tight jacket of neutron permeable material such as aluminum. The jacket is provided with a flexible end cap and with a sealing member having a substantially fluid-tight fit within the jacket in tight abutment with the end cap and the end of the slug. A fluid passage is provided between the end of the slug and the cap whereby leakage fiuid is principally directed to the end of the slug. In this manner, any reaction between the fissionable material and fiuid which may take place occurs more rapidly at the end of the slug than along the sides between the slug and the jacket, thereby causing longitudinal expansion of the fuel element prior to radial expansion. The longitudinal expansion can be readily detected and the fuel element removed from the coolant tube before radial expansion causes it to become jammed in the tube.

Inventors:
;
Issue Date:
Research Org.:
Originating Research Org. not identified
OSTI Identifier:
4282302
Patent Number(s):
2855355
Assignee:
U.S. Atomic Energy Commission DTIE; NSA-13-008355
NSA Number:
NSA-13-008355
Resource Type:
Patent
Resource Relation:
Other Information: Orig. Receipt Date: 31-DEC-59
Country of Publication:
United States
Language:
English
Subject:
PATENTS; ALUMINUM; CHEMICAL REACTIONS; COOLANT LOOPS; COOLANTS; CYLINDERS; DETECTION; DIFFUSION; EXPANSION; FISSIONABLE MATERIALS; FLUID FLOW; FLUIDS; FUEL ELEMENTS; JACKETS; LEAKS; MACHINE PARTS; NEUTRONS; REACTORS; RODS; SEALS; TUBES; URANIUM

Citation Formats

Ohlinger, L.A., and Cooper, C.M. JACKETED URANIUM SLUG. United States: N. p., 1958. Web.
Ohlinger, L.A., & Cooper, C.M. JACKETED URANIUM SLUG. United States.
Ohlinger, L.A., and Cooper, C.M. Wed . "JACKETED URANIUM SLUG". United States.
@article{osti_4282302,
title = {JACKETED URANIUM SLUG},
author = {Ohlinger, L.A. and Cooper, C.M.},
abstractNote = {Fuel elements for nuclear reactors are described. Eacb fuel element is comprised of a solid cylindrical slug containing fissionable material enclosed within a fluid tight jacket of neutron permeable material such as aluminum. The jacket is provided with a flexible end cap and with a sealing member having a substantially fluid-tight fit within the jacket in tight abutment with the end cap and the end of the slug. A fluid passage is provided between the end of the slug and the cap whereby leakage fiuid is principally directed to the end of the slug. In this manner, any reaction between the fissionable material and fiuid which may take place occurs more rapidly at the end of the slug than along the sides between the slug and the jacket, thereby causing longitudinal expansion of the fuel element prior to radial expansion. The longitudinal expansion can be readily detected and the fuel element removed from the coolant tube before radial expansion causes it to become jammed in the tube.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1958},
month = {10}
}