Detection and control of as-produced pyrocarbon permeability in biso-coated high temperature gas-cooled reactor fuel particles
Journal Article
·
· Am. Ceram. Soc. Bull.; (United States)
OSTI ID:6858130
Fuel for high temperature gas-cooled reactors consists of dense uranium carbide and thoria microspheres coated with layers of pyrolytic carbon and silicon carbide. The pyrolytic carbon coatings must be impermeable to fission gases to function properly during irradiation. Therefore, particles must be carefully characterized to determine as-produced permeability. The experiment described compares several methods of permeability measurement - long-term chlorination followed by radiography, neon-helium intrusion, and fission gas release - and evaluates their value in predicting irradiation stability. Results show that the long-term chlorination and neon-helium procedures are preferable. 16 refs.
- Research Organization:
- Oak Ridge Natl Lab, TN, USA
- OSTI ID:
- 6858130
- Journal Information:
- Am. Ceram. Soc. Bull.; (United States), Journal Name: Am. Ceram. Soc. Bull.; (United States) Vol. 61:2; ISSN ACSBA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210300* -- Power Reactors
Nonbreeding
Graphite Moderated
36 MATERIALS SCIENCE
360603 -- Materials-- Properties
360605 -- Materials-- Radiation Effects
ACTINIDE COMPOUNDS
CARBON
CHALCOGENIDES
CHEMICAL REACTIONS
CHLORINATION
ELEMENTS
FISSION PRODUCT RELEASE
FLUIDS
FUEL PARTICLES
GAS COOLED REACTORS
GASES
GRAPHITE MODERATED REACTORS
HALOGENATION
HELIUM
HTGR TYPE REACTORS
INDUSTRIAL RADIOGRAPHY
IRRADIATION
MICROSPHERES
NEON
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PERMEABILITY
PYROLYTIC CARBON
RARE GASES
REACTORS
THORIUM COMPOUNDS
THORIUM OXIDES
VERY HIGH TEMPERATURE
210300* -- Power Reactors
Nonbreeding
Graphite Moderated
36 MATERIALS SCIENCE
360603 -- Materials-- Properties
360605 -- Materials-- Radiation Effects
ACTINIDE COMPOUNDS
CARBON
CHALCOGENIDES
CHEMICAL REACTIONS
CHLORINATION
ELEMENTS
FISSION PRODUCT RELEASE
FLUIDS
FUEL PARTICLES
GAS COOLED REACTORS
GASES
GRAPHITE MODERATED REACTORS
HALOGENATION
HELIUM
HTGR TYPE REACTORS
INDUSTRIAL RADIOGRAPHY
IRRADIATION
MICROSPHERES
NEON
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PERMEABILITY
PYROLYTIC CARBON
RARE GASES
REACTORS
THORIUM COMPOUNDS
THORIUM OXIDES
VERY HIGH TEMPERATURE