Fuel axial relocation in ballooning fuel rods. [PWR; BWR]
Conference
·
OSTI ID:5732588
Fuel movement, in the longitudinal direction in ballooning fuel rods, shifts the position of heat generation and may cause an increase in cladding temperature in the ballooning region. This paper summarizes the axial fuel relocation data obtained in fuel rod tests conducted in the United States and the Federal Republic of Germany, describes a model for calculating fuel axial relocation, and gives a quantitative analysis of the impact of fuel relocation on cladding temperature. The amount of fuel relocation in 18 ballooned fuel rods was determined from neutron radiographs, niobium gamma decay counts, and photomicrographs. The fuel rods had burnups in the range of 0 to 35,000 MWd/t and cladding hoop strains varying from 0 to 72%.
- Research Organization:
- EG and G Idaho, Inc., Idaho Falls (USA)
- DOE Contract Number:
- AC07-76ID01570
- OSTI ID:
- 5732588
- Report Number(s):
- EGG-M-14582; CONF-830805-58; ON: DE84000367
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210100 -- Power Reactors
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210200 -- Power Reactors
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210100 -- Power Reactors
Nonbreeding
Light-Water Moderated
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210200 -- Power Reactors
Nonbreeding
Light-Water Moderated
Nonboiling Water Cooled
22 GENERAL STUDIES OF NUCLEAR REACTORS
220900* -- Nuclear Reactor Technology-- Reactor Safety
ACCIDENTS
BWR TYPE REACTORS
DAMAGE
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FUEL ELEMENTS
FUEL PELLETS
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PWR TYPE REACTORS
REACTOR ACCIDENTS
REACTOR COMPONENTS
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REACTORS
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STRESSES
THERMAL STRESSES
WATER COOLED REACTORS
WATER MODERATED REACTORS