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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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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.
L. A. Semenza, E. E. Lewis, E. C. Rossow
Nuclear Science and Engineering | Volume 47 | Number 3 | March 1972 | Pages 302-310
Technical Paper | doi.org/10.13182/NSE72-A22416
Articles are hosted by Taylor and Francis Online.
The finite element method is applied to the multigroup neutron diffusion equations. The one-group inhomogeneous diffusion equation is first discretized using both triangular and rectangular elements. The finite element method is then extended to energy-dependent diffusion by treating the multigroup equations as a series of inhomogeneous one-group equations with sources arising from fission and group-to-group scattering. The resulting formalism is incorporated into a computer code for solving multigroup criticality problems by poweriteration techniques. Numerical results are presented for a two-group water reactor problem. Eigenvalues and flux distributions obtained from two finite element calculations using less than 500 simultaneous equations are in excellent agreement with an accurate PDQ calculation.
