ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Explore membership for yourself or for your organization.
Conference Spotlight
2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
Standards Program
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!
Latest Magazine Issues
Sep 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
September 2025
Nuclear Technology
Fusion Science and Technology
October 2025
Latest News
Empowering the next generation: ANS’s newest book focuses on careers in nuclear energy
A new career guide for the nuclear energy industry is now available: The Nuclear Empowered Workforce by Earnestine Johnson. Drawing on more than 30 years of experience across 16 nuclear facilities, Johnson offers a practical, insightful look into some of the many career paths available in commercial nuclear power. To mark the release, Johnson sat down with Nuclear News for a wide-ranging conversation about her career, her motivation for writing the book, and her advice for the next generation of nuclear professionals.
When Johnson began her career at engineering services company Stone & Webster, she entered a field still reeling from the effects of the Three Mile Island incident in 1979, nearly 15 years earlier. Her hiring cohort was the first group of new engineering graduates the company had brought on since TMI, a reflection of the industry-wide pause in nuclear construction. Her first long-term assignment—at the Millstone site in Waterford, Conn., helping resolve design issues stemming from TMI—marked the beginning of a long and varied career that spanned positions across the country.
C. S. Luby
Nuclear Technology | Volume 3 | Number 12 | December 1967 | Pages 728-736
Technical Paper and Note | doi.org/10.13182/NT67-A27789
Articles are hosted by Taylor and Francis Online.
Irradiation tests to evaluate coated-particle fuels under high temperature, high burnup, and high fast-neutron dose conditions were designed so that the irradiation parameters could be measured and controlled closely. The coated particles used consisted of two-layer (BISO) and threelayer (Triplex) pyrolytic carbon coatings on fuel particles of the carbide or oxide of thorium and/or uranium. In the irradiation experiments, the coated particles were tested at temperatures up to 1900°C, fuel burnups up to 20% fissions per initial heavy metal atom (FIMA), burnup rates up to 20% FIMA per month, and fast-neutron doses up to 2.7 x 1021 n/cm2 (E > 0.18 MeV). Correlations between the irradiation temperatures and other important radiation and materials parameters are presented showing the effects of these parameters on the stability of the BISO and Triplex coated fuel particles. These studies show that the temperature of irradiation is one of the most important parameters influencing coated-particle fuel stability under irradiation. This is believed to be due to the dependence of the fission gas pressure on irradiation temperature and the deleterious effect that an increase in this pressure has on the coating. Thicker coatings are required for high-temperature operation. The studies also demonstrated that coated particles with two- and three-layer pyrolytic-carbon coatings and adequate fuel contents have good stability well beyond the temperatures anticipated in an HTGR.
