Factors affecting defective fraction of biso-coated HTGR fuel particles during in-block carbonization

Technical Report · Mon Oct 31 00:00:00 EST 1977

DOI:https://doi.org/10.2172/5254494· OSTI ID:5254494

Caputo, A. J.; Johnson, D. R.; Bayne, C. K.

The performance of Biso-coated thoria fuel particles during the in-block processing step of HTGR fuel element refabrication was evaluated. The effect of various process variables (heating rate, particle crushing strength, horizontal and/or vertical position in the fuel element blocks, and fuel hole permeability) on pitch coke yield, defective fraction of fuel particles, matrix structure, and matrix porosity was evaluated. Of the variables tested, only heating rate had a significant effect on pitch coke yield while both heating rate and particle crushing strength had a significant effect on defective fraction of fuel particles.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 5254494
• Report Number(s): ORNL/TM-6093; TRN: 78-002514
• Country of Publication: United States
• Language: English

Related Subjects

11 NUCLEAR FUEL CYCLE AND FUEL MATERIALS
36 MATERIALS SCIENCE
COATED FUEL PARTICLES
CARBONIZATION
COKE
FABRICATION
FAILURES
FUEL ELEMENTS
GRAPHITE
HTGR TYPE REACTORS
PITCHES
PROCESSING
PYROLYTIC CARBON
SILICON CARBIDES
THORIUM OXIDES
ACTINIDE COMPOUNDS
CARBIDES
CARBON
CARBON COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
DECOMPOSITION
ELEMENTS
FUEL PARTICLES
GAS COOLED REACTORS
GRAPHITE MODERATED REACTORS
NONMETALS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
REACTOR COMPONENTS
REACTORS
SILICON COMPOUNDS
THORIUM COMPOUNDS
050700* - Nuclear Fuels- Fuels Production & Properties
360601 - Other Materials- Preparation & Manufacture
360201 - Ceramics
Cermets
& Refractories- Preparation & Fabrication