Two series of capsules containing uranium dioxide clad with stainless steel have been irradiated for the purpose of studying the properties after a moderate burnup in an efficiently cooled capsule in one series, and a moderate burnup in a capsule designed to simulate the condition of overpower in the other series. Specimens in the first series of three capsules had an enrichment of 4 percent and were irradiated to a burnup of 0.1 percent uranium. The uranium dioxide did not show any significant effects that could be definitely attributed to radiation. Specimens in the second series of three capsules had an enrichment of 3 percent and were irradiated to a burnup of 0.05 percent uranium. Low-conductivity materials of low thermal-neutron-absorption cross section were used to surround the specimens and thermally insulate the fissioning uranium dioxide. The uranium dioxide showed considerable change as a result of irradiation, chiefly in the formation of columnar grains and central voids in all three capsules. A sample of fission gas was taken from one of the capsules and its analysis for xenon-133 indicates that only approximately 0.0005 percent was released from the uranium dioxide.

  • Supplemental Notes:
    • This document is available for review at the Department of Commerce Library, Main Commerce Building, Washington, D.C., under reference number BMI-B&W-651.
  • Corporate Authors:

    Battelle Memorial Institute

    505 King Avenue
    Columbus, OH  United States  43201

    Babcock and Wilcox Company

    Atomic Energy Division
    Lynchburg, VA  United States  24504
  • Authors:
    • Lamale, G E
    • Smith, J C
    • Hare, A W
    • Dickerson, R F
  • Publication Date: 1959-11-11

Media Info

  • Features: Figures; Tables;
  • Pagination: 51 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00026174
  • Record Type: Publication
  • Source Agency: Maritime Administration
  • Report/Paper Numbers: BMI-B&W-651
  • Contract Numbers: AT(30-3)-274
  • Files: TRIS, USDOT
  • Created Date: Feb 6 1973 12:00AM