Irradiation-induced permeability in pyrocarbon coatings. Final report of work conducted under PWS FD-12
Two US irradiation experiments were planned to provide information to supplement data from the German program on irradiation-induced permeability in pyrocarbon coatings. Hopefully, the data from both programs could be combined to define the onset of neutron-induced permeability in a variety of Biso coatings produced with different process variables (coating temperature, coating gases, and coating rates). The effort was not successful. None of the preirradiation characterization procedures were able to adequately predict irradiation performance. A large amount of within-batch scatter was observed in the fission gas and cesium release data along with significant within-batch variation in coating properties. Additional preirradiation characterization might result in a procedure that could successfully predict irradiation performance, but little can be done about the within-batch variation in coating properties. This variation is probably the result of random movement of particles within the coating furnace during pyrocarbon deposition. 19 figures, 4 tables.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 6661591
- Report Number(s):
- ORNL/TM-8348; ON: DE83001722
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
050700* -- Nuclear Fuels-- Fuels Production & Properties
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210300 -- Power Reactors
Nonbreeding
Graphite Moderated
36 MATERIALS SCIENCE
360605 -- Materials-- Radiation Effects
ALKALI METAL ISOTOPES
ALKALI METALS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CARBON
CESIUM
CESIUM 137
CESIUM ISOTOPES
COATED FUEL PARTICLES
COATINGS
DATA
ELEMENTS
EVEN-EVEN NUCLEI
EXPERIMENTAL DATA
FISSION PRODUCT RELEASE
FLUIDS
FUEL PARTICLES
GAS COOLED REACTORS
GASES
GRAPHITE MODERATED REACTORS
HTGR TYPE REACTORS
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOTOPES
KRYPTON 86
KRYPTON ISOTOPES
METALS
NONMETALS
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
PERMEABILITY
PYROLYTIC CARBON
RADIATION EFFECTS
RADIOISOTOPES
REACTORS
STABLE ISOTOPES
YEARS LIVING RADIOISOTOPES
11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS
210300 -- Power Reactors
Nonbreeding
Graphite Moderated
36 MATERIALS SCIENCE
360605 -- Materials-- Radiation Effects
ALKALI METAL ISOTOPES
ALKALI METALS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CARBON
CESIUM
CESIUM 137
CESIUM ISOTOPES
COATED FUEL PARTICLES
COATINGS
DATA
ELEMENTS
EVEN-EVEN NUCLEI
EXPERIMENTAL DATA
FISSION PRODUCT RELEASE
FLUIDS
FUEL PARTICLES
GAS COOLED REACTORS
GASES
GRAPHITE MODERATED REACTORS
HTGR TYPE REACTORS
INFORMATION
INTERMEDIATE MASS NUCLEI
ISOTOPES
KRYPTON 86
KRYPTON ISOTOPES
METALS
NONMETALS
NUCLEI
NUMERICAL DATA
ODD-EVEN NUCLEI
PERMEABILITY
PYROLYTIC CARBON
RADIATION EFFECTS
RADIOISOTOPES
REACTORS
STABLE ISOTOPES
YEARS LIVING RADIOISOTOPES