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Title: Yttrium and rare earth stabilized fast reactor metal fuel

Abstract

To increase the operating temperature of a reactor, the melting point and mechanical properties of the fuel must be increased. For an actinide-rich fuel, yttrium, lanthanum and/or rare earth elements can be added, as stabilizers, to uranium and plutonium and/or a mixture of other actinides to raise the melting point of the fuel and improve its mechanical properties. Since only about 1% of the actinide fuel may be yttrium, lanthanum, or a rare earth element, the neutron penalty is low, the reactor core size can be reduced, the fuel can be burned efficiently, reprocessing requirements are reduced, and the nuclear waste disposal volumes reduced. A further advantage occurs when yttrium, lanthanum, and/or other rare earth elements are exposed to radiation in a reactor, they produce only short half life radioisotopes, which reduce nuclear waste disposal problems through much shorter assured-isolation requirements.

Inventors:
 [1];  [2];  [3]
  1. Woodland Hills, CA
  2. Calabasas, CA
  3. Simi Valley, CA
Issue Date:
Research Org.:
ROCKWELL INTERNATIONAL CORP
OSTI Identifier:
868283
Patent Number(s):
5112534
Assignee:
United States of America as represented by United States (Washington, DC)
DOE Contract Number:  
AC03-88SF17468
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
yttrium; rare; earth; stabilized; fast; reactor; metal; fuel; increase; operating; temperature; melting; mechanical; properties; increased; actinide-rich; lanthanum; elements; added; stabilizers; uranium; plutonium; mixture; actinides; raise; improve; actinide; element; neutron; penalty; core; size; reduced; burned; efficiently; reprocessing; requirements; nuclear; waste; disposal; volumes; advantage; occurs; exposed; radiation; produce; half; life; radioisotopes; reduce; shorter; assured-isolation; waste disposal; earth elements; reactor core; rare earth; mechanical properties; operating temperature; nuclear waste; earth element; fast reactor; half life; reactor metal; metal fuel; actinide fuel; /252/376/420/976/

Citation Formats

Guon, Jerold, Grantham, LeRoy F, and Specht, Eugene R. Yttrium and rare earth stabilized fast reactor metal fuel. United States: N. p., 1992. Web.
Guon, Jerold, Grantham, LeRoy F, & Specht, Eugene R. Yttrium and rare earth stabilized fast reactor metal fuel. United States.
Guon, Jerold, Grantham, LeRoy F, and Specht, Eugene R. Wed . "Yttrium and rare earth stabilized fast reactor metal fuel". United States. https://www.osti.gov/servlets/purl/868283.
@article{osti_868283,
title = {Yttrium and rare earth stabilized fast reactor metal fuel},
author = {Guon, Jerold and Grantham, LeRoy F and Specht, Eugene R},
abstractNote = {To increase the operating temperature of a reactor, the melting point and mechanical properties of the fuel must be increased. For an actinide-rich fuel, yttrium, lanthanum and/or rare earth elements can be added, as stabilizers, to uranium and plutonium and/or a mixture of other actinides to raise the melting point of the fuel and improve its mechanical properties. Since only about 1% of the actinide fuel may be yttrium, lanthanum, or a rare earth element, the neutron penalty is low, the reactor core size can be reduced, the fuel can be burned efficiently, reprocessing requirements are reduced, and the nuclear waste disposal volumes reduced. A further advantage occurs when yttrium, lanthanum, and/or other rare earth elements are exposed to radiation in a reactor, they produce only short half life radioisotopes, which reduce nuclear waste disposal problems through much shorter assured-isolation requirements.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {1}
}

Patent:

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