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Conference Spotlight
2025 ANS Winter Conference & Expo
November 8–12, 2025
Washington, DC|Washington Hilton
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The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Latest News
DNFSB’s Summers ends board tenure, extending agency’s loss of quorum
Lee
Summers
The Defense Nuclear Facilities Safety Board, the independent agency responsible for ensuring that Department of Energy facilities are protective of public health and safety, announced that the board’s acting chairman, Thomas Summers, has concluded his service with the agency, having completed his second term as a board member on October 18.
Summers’ departure leaves Patricia Lee, who joined the DNFSB after being confirmed by the Senate in July 2024, as the board’s only remaining member and acting chair. Lee’s DNFSB board term ends in October 2027.
C. F. Leitten, Jr., R. J. Beaver
Nuclear Technology | Volume 4 | Number 6 | June 1968 | Pages 399-417
Technical Paper and Note | doi.org/10.13182/NT68-A26366
Articles are hosted by Taylor and Francis Online.
Recent technological advancements have stimulated interest in lanthanide compounds as neutron absorbers. Specific fabrication procedures were developed for incorporating chemically stable europium oxide in stainless steel base neutron absorbers. The irradiation of europium oxide -stainless steel base absorbers to neutron absorptions as high as 6 x I021/cm3 resulted in no deleterious effects. The excellent performance of the europium oxide-stainless steel combination in the control rods of the SM-1 and SM-1A reactors further demonstrated their potential in pressurized water reactors. Arc fusion was found superior to conventional high-temperature heat treating for the production of either bulk or dense dispersoids of the lanthanide oxides. Europium molybdate and titanate are attractive compounds that resist attack by water. In addition to its superior resistance to corrosion by water at high temperature, europium molybdate has a substantial europium density. However9 like europium oxide9 it is only compatible with stainless steels having low silicon contents. Europium titanate has a lower europium density but acceptable resistance to water and superior compatibility with conventional stainless steels.
