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Conference Spotlight
2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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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.
Lothar Wolf, Ashok Rastogi, Dag Wennerberg, Thomas Cron, Edgar Hansjosten
Nuclear Technology | Volume 125 | Number 2 | February 1999 | Pages 136-154
Technical Paper | Reactor Safety | doi.org/10.13182/NT99-A2938
Articles are hosted by Taylor and Francis Online.
The contribution by the Heiss Dampf Reaktor Safety Program, phase III, to the German containment hydrogen research activities were twofold:1. to confirm the findings of the experiments in the Battelle Model Containment (BMC) in volumes of typically ~100 m3 by similar ones at a larger scale with a total volume of 500 m32. to broaden the database for assessing the emerging modeling strategy for larger scales toward more realistic subcompartment sizes.To supplement the results obtained in the BMC in a proper, controlled manner for additional model development and computer code verification, a total of seven experiments was performed, and the following positions for hydrogen ignition were examined:test group E12.1: hydrogen deflagration in a vertically oriented subcompartmenttest group E12.2: ignition close to the venttest group E12.3: accelerated jet ignition in a horizontal direction.The maximum peak pressure occurred for E12.3.3 at 1.8 bars under typical accelerated jet ignition conditions for 12 vol% initial H2 concentration. Because of larger vent openings, maximum peak pressures were generally lower than observed in BMC tests, whereas maximum temperatures were substantially higher, reaching 1000°C and above. A few comparisons between data and code results from CONTAIN, RALOC-HYDCOM, and CONTAIN/BASSIM computations are shown, indicating the need for further improvements.
