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2025 ANS Winter Conference & Expo
November 9–12, 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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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.
H. Y. Khater, M. E. Sawan
Fusion Science and Technology | Volume 34 | Number 3 | November 1998 | Pages 581-585
International Thermonuclear Experimental Reactor (ITER) (Poster Session) | doi.org/10.13182/FST98-A11963676
Articles are hosted by Taylor and Francis Online.
A detailed three-dimensional model (3-D) has been developed for the divertor cassette in the ITER design. The layered configurations of the dome PFC and vertical targets were modeled accurately with the front tungsten layer modeled separately. 3-D neutronics calculations have been performed to determine the detailed spatial distribution of the neutron flux in the divertor cassette. A detailed activation analysis has been performed for zones representing the different critical components of the divertor cassette. The calculations have been performed for two operational scenarios. Special attention has been given to the top 1 cm tungsten layer of the divertor dome. The radioactivity generated in the tungsten layers of the divertor is mostly dominated by W during the first day after shutdown. The GlidCop copper and 316 SS-LN parts of the divertor also generated considerable levels of activity and decay heat. Nevertheless, the analysis showed that the tungsten Plasma Facing Component (PFC) is clearly the most critical part of the divertor from the decay heat generation point of view.
