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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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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
The RAIN scale: A good intention that falls short
Radiation protection specialists agree that clear communication of radiation risks remains a vexing challenge that cannot be solved solely by finding new ways to convey technical information.
Earlier this year, an article in Nuclear News described a new radiation risk communication tool, known as the Radiation Index, or, RAIN (“Let it RAIN: A new approach to radiation communication,” NN, Jan. 2025, p. 36). The authors of the article created the RAIN scale to improve radiation risk communication to the general public who are not well-versed in important aspects of radiation exposures, including radiation dose quantities, units, and values; associated health consequences; and the benefits derived from radiation exposures.
Hsu-Chieh Yeh, Robert F. Keating, R. Michael Roidt, L. E. Hochreiter
Nuclear Technology | Volume 98 | Number 2 | May 1992 | Pages 224-229
Technical Paper | Heat Transfer and Fluid Flow | doi.org/10.13182/NT92-A34678
Articles are hosted by Taylor and Francis Online.
The dynamic behavior of the failed steam generator tube plug of an operational plant in 1989 can be understood through an analysis that solves the energy equation of the broken plug top and computes its kinetic energy as a function of elevation in the tube. The computed high kinetic energy of the plug top when it reaches the U-bend of the tube can exceed the work required to penetrate the tube wall at that location. If the inlet flow area at the bottom of the tube is small, the plug top exhibits an interesting stop-and-reacceleration behavior.
