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Title: Fuel performance models for high-temperature gas-cooled reactor core design

Mechanistic fuel performance models are used in high-temperature gas-cooled reactor core design and licensing to predict failure and fission product release. Fuel particles manufactured with defective or missing SiC, IPyC, or fuel dispersion in the buffer fail at a level of less than 5 x 10/sup -4/ fraction. These failed particles primarily release metallic fission products because the OPyC remains intact on 90% of the particles and retains gaseous isotopes. The predicted failure of particles using performance models appears to be conservative relative to operating reactor experience.
Authors:
; ;
Publication Date:
OSTI Identifier:
5565644
Report Number(s):
GA-A-16982; CONF-830451-26
ON: DE84002669
DOE Contract Number:
AT03-76ET35300
Resource Type:
Conference
Resource Relation:
Conference: American Ceramic Society annual meeting, Chicago, IL, USA, 25 Apr 1983
Research Org:
GA Technologies, Inc., San Diego, CA (USA)
Country of Publication:
United States
Language:
English
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; COATED FUEL PARTICLES; FUEL ELEMENT FAILURE; HTGR TYPE REACTORS; FISSION PRODUCT RELEASE; FUEL RODS; MATHEMATICAL MODELS; ACCIDENTS; FUEL ELEMENTS; FUEL PARTICLES; GAS COOLED REACTORS; GRAPHITE MODERATED REACTORS; REACTOR ACCIDENTS; REACTOR COMPONENTS; REACTORS 210300* -- Power Reactors, Nonbreeding, Graphite Moderated