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Conference Spotlight
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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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.
Satoshi Fukada, Makoto Ueda, Takaaki Izumi, Go Wu, Kazunari Katayama
Fusion Science and Technology | Volume 61 | Number 4 | May 2012 | Pages 282-289
Technical Paper | doi.org/10.13182/FST12-A13581
Articles are hosted by Taylor and Francis Online.
This research is performed to determine how gaseous impurities affect the evacuation of tritium from a fusion reactor chamber by using a cryosorption pump. The amounts of H2O and CH4 remaining on activated carbon during repeated cycles between adsorption for evacuation and desorption for regeneration are related to the partial pressures of the H2O and CH4 and to temperature and are correlated in terms of Henry's law. It is experimentally investigated how the impurities remaining on the activated carbon after rough evacuation by elevating the temperature affect the adsorption of H2 and He at cryogenic temperature. The amount of CH4 remaining on activated carbon is smaller than that of H2O, and it was found that the former's effect is comparatively smaller than the latter's. Discussion is made based on the surface coverage and pore distribution that are determined by the BET measurement. An important conclusion is that the bulk of the H2O and CH4 can be released from activated carbon by heating to 373 K.
