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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!
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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.
H. V. Kok, T. H. J. J. Van der Hagen
Nuclear Technology | Volume 128 | Number 1 | October 1999 | Pages 1-11
Technical Paper | Fission Reactors | doi.org/10.13182/NT99-A3009
Articles are hosted by Taylor and Francis Online.
The design and implementation of a simulated void-reactivity feedback in an experimental thermal-hydraulic loop meant for boiling water reactor (BWR)-dynamics studies is described. The void fraction in the loop is measured in real time and used as an input to a simulation that calculates the effect of void-reactivity on the reactor power. The resulting signals are used to control the power supplies of the loop. Advantages of this hybrid system in the study of BWR dynamics is that the complicated transfer functions related to two-phase flow are realized physically, while the relatively simple transfer functions related to the neutronics are simulated.
