Helium diffusion in irradiated boron carbide. [LMFBR]
Conference
·
OSTI ID:6204757
Boron carbide has been internationally adopted as the neutron absorber material in the control and safety rods of large fast breeder reactors. Its relatively large neutron capture cross section at high neutron energies provides sufficient reactivity worth with a minimum of core space. In addition, the commercial availability of boron carbide makes it attractive from a fabrication standpoint. Instrumented irradiation experiments in EBR-II have provided continuous helium release data on boron carbide at a variety of operating temperatures. Although some microstructural and compositional variations were examined in these experiments most of the boron carbide was prototypic of that used in the Fast Flux Test Facility. The density of the boron carbide pellets was approximately 92% of theoretical. The boron carbide pellets were approximately 1.0 cm in diameter and possessed average grain sizes that varied from 8 to 30 ..mu..m. Pellet centerline temperatures were continually measured during the irradiation experiments.
- Research Organization:
- Hanford Engineering Development Lab., Richland, WA (USA)
- DOE Contract Number:
- AC14-76FF02170
- OSTI ID:
- 6204757
- Report Number(s):
- HEDL-SA-2236-FP; CONF-810528-10; ON: DE81027848
- Country of Publication:
- United States
- Language:
- English
Similar Records
Effect of material variables on the irradiation performance of boron carbide. [LMFBR]
Helium retention and its effect on boron carbide irradiated in a fast reactor
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Conference
·
Mon Dec 31 23:00:00 EST 1979
·
OSTI ID:5351838
Helium retention and its effect on boron carbide irradiated in a fast reactor
Conference
·
Mon Sep 01 00:00:00 EDT 1975
·
OSTI ID:7188698
Swelling and microcracking of boron carbide subjected to fast neutron irradiations
Journal Article
·
Mon Oct 01 00:00:00 EDT 1990
· Journal of Applied Physics; (USA)
·
OSTI ID:6411582
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BORON CARBIDES
BORON COMPOUNDS
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CARBON COMPOUNDS
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EPITHERMAL REACTORS
FAST REACTORS
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LIQUID METAL COOLED REACTORS
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NONMETALS
PHYSICAL RADIATION EFFECTS
RADIATION CHEMISTRY
RADIATION EFFECTS
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210500 -- Power Reactors
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22 GENERAL STUDIES OF NUCLEAR REACTORS
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36 MATERIALS SCIENCE
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BORON CARBIDES
BORON COMPOUNDS
BREEDER REACTORS
CARBIDES
CARBON COMPOUNDS
CHEMICAL RADIATION EFFECTS
CHEMISTRY
CONTROL ELEMENTS
DEFORMATION
DIFFUSION
ELEMENTS
EPITHERMAL REACTORS
FAST REACTORS
FBR TYPE REACTORS
FLUIDS
GASES
HELIUM
LIQUID METAL COOLED REACTORS
LMFBR TYPE REACTORS
MATERIALS
NONMETALS
PHYSICAL RADIATION EFFECTS
RADIATION CHEMISTRY
RADIATION EFFECTS
RARE GASES
REACTOR COMPONENTS
REACTOR MATERIALS
REACTORS
SWELLING