Irradiation performance of HTGR Biso fertile particles in HFIR experiments HT-17, -18, and -19

Technical Report · Wed Nov 01 04:00:00 EST 1978

DOI:https://doi.org/10.2172/6802734· OSTI ID:6802734

Long, Jr., E. L.; Beatty, R. L.; Robbins, J. M.; Kania, M. J.; Eatherly, W. P.

A series of Biso-coated fertile particles was irradiated in the target facility of the High-Flux Isotope Reactor. The primary objectives of this experiment were to relate the fast-neutron stability of dense propylene-derived pyrocarbons to preferred orientation and to relate irradiation performance to preirradiation characterization values. Coating characterization included x-ray BAF, optical anisotropy, gaseous permeability, small-angle x-ray scattering, and thickness and density determinations. Other objectives were to test Biso-coated large-diameter ThO/sub 2/ kernels and coatings derived from propylene diluted with CO/sub 2/ rather than argon. Visual examination of the irradiated particles showed that the majority had failed as a result of fast-neutron damage.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: W-7405-ENG-26
• OSTI ID: 6802734
• Report Number(s): ORNL/TM-6414
• Country of Publication: United States
• Language: English

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