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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.
D. Lynn Shaeffer, F. Owen Hoffman
Nuclear Technology | Volume 45 | Number 1 | August 1979 | Pages 99-106
Technical Paper | Radioactive Waste | doi.org/10.13182/NT79-A32288
Articles are hosted by Taylor and Francis Online.
An analysis was made of the uncertainty in the prediction of dose to an individual’s thyroid due to the transport of radioactive molecular iodine, 131I2, from air through the pasture-cow-milk pathway. This analysis was facilitated by the adoption of a model consisting of a multiplication of several factors represented by lognormal distributions of values. Results indicate there is a 64, 50, or 23% chance of the annual dose to an individual’s thyroid not exceeding the mean, median, or most probable doses, respectively. However, these results are tentative as a result of the limited amount of data available for annual average dose assessments. The suggestion is made that consideration be given to adopting a probabilistic approach to determining an acceptable probability of an individual receiving a dose that exceeds a limiting value.
