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Title: Study of UO/sub 2/ wafer fuel for very high-power research reactors

The Reduced Enrichment Research and Test Reactor Program is aimed at reducing fuel enrichment to < 20% in those research and test reactors presently using highly enriched uranium fuel. UO/sub 2/ caramel fuel is one of the most promising new types of reduced-enrichment fuel for use in research reactors with very high power density. Parametric studies have been carried out to determine the maximum specific power attainable without significant fission-gas release for UO/sub 2/ wafers ranging from 0.75 to 1.50 mm in thickness. The results indicate that (1) all the fuel designs considered in this study are predicted not to fail under full-power operation up to a burnup of 1.09 x 10/sup 21/ fis/cm/sup 3/; (2) for all fuel designs, failure is predicted at approximately the same fuel centerline temperature for a given burnup; (3) the thinner the wafer, and wider the margin for fuel specific power between normal operation and increased-power operation leading to fuel failure; (4) increasing the coolant pressure in the reactor core could improve fuel performance by maintaining the fuel at a higher power level without failure for a given burnup; and (5) for a given power level, fuel failure will occur earlier at a highermore » cladding surface temperature and/or under power-cycling conditions. 12 figures, 7 tables.« less
Authors:
; ; ;
Publication Date:
OSTI Identifier:
6463868
Report Number(s):
ANL/RERTR/TM-2
ON: DE81026501; TRN: 81-013150
DOE Contract Number:
W-31-109-ENG-38
Resource Type:
Technical Report
Research Org:
Argonne National Lab., IL (USA)
Country of Publication:
United States
Language:
English
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; 11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS; OSIRIS REACTOR; NUCLEAR FUELS; RESEARCH REACTORS; URANIUM DIOXIDE; FUEL ELEMENT FAILURE; FUEL PLATES; PERFORMANCE; ACCIDENTS; ACTINIDE COMPOUNDS; CHALCOGENIDES; ENERGY SOURCES; ENRICHED URANIUM REACTORS; FUEL ELEMENTS; FUELS; IRRADIATION REACTORS; MATERIALS; MATERIALS TESTING REACTORS; OXIDES; OXYGEN COMPOUNDS; REACTOR ACCIDENTS; REACTOR COMPONENTS; REACTOR MATERIALS; REACTORS; RESEARCH AND TEST REACTORS; TANK TYPE REACTORS; THERMAL REACTORS; URANIUM COMPOUNDS; URANIUM OXIDES; WATER COOLED REACTORS; WATER MODERATED REACTORS 220600* -- Nuclear Reactor Technology-- Research, Test & Experimental Reactors; 050700 -- Nuclear Fuels-- Fuels Production & Properties