Preirradiation report of TRISO and BISO coated ThO/sub 2/ particles for irradiation in capsules HT-31 and HT-33

Technical Report · Mon Nov 01 04:00:00 EST 1976

DOI:https://doi.org/10.2172/7227368· OSTI ID:7227368

Kovacs, W. J.; Young, C. A.; Harmon, D. P.

The HT-31 and HT-33 irradiation capsules are part of a continued cooperative effort between General Atomic and Oak Ridge National Laboratory designed to evaluate irradiation performance of unbonded TRISO and BISO coated ThO/sub 2/ particles. Sixteen TRISO samples will be tested in HT-31 and thirty-two TRISO and BISO samples will be irradiated in HT-33. The fuel will be tested at either 1200/sup 0/ or 1500/sup 0/C to a fast fluence of 5 to 10 x 10/sup 25/ n/m/sup 2/ (E greater than 29 fJ)/sub HTGR/. The evaluation tests will consist mainly of particles fabricated in the GA pilot plant 240-mm-diameter coater. The experimental test matrix for the TRISO and BISO particles is directed toward defining relationships between the outer pyrocarbon coating density, anisotropy, and coating rate and fuel particle performance. Detailed discussions of the TRISO and BISO particles being tested are presented in separate sections of the report.

• Research Organization: General Atomic Co., San Diego, CA (USA)
• DOE Contract Number: EY-76-C-03-0167-017
• OSTI ID: 7227368
• Report Number(s): GA-A-13923
• Country of Publication: United States
• Language: English

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