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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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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.
Ramu K. Sundaram, John C. Chen, John C. Dallman
Nuclear Science and Engineering | Volume 88 | Number 3 | November 1984 | Pages 287-296
Technical Paper | doi.org/10.13182/NSE84-A18583
Articles are hosted by Taylor and Francis Online.
Liquid holdup on a 101.6-mm-diam, 0.5588-m-long vertical rod has been measured in air/water cross flow at various air and water flow rates. The measurement technique involved the use of band-type capacitance probes, which are capable of measuring the average liquid film thickness around the rod circumference. The probe is able to provide useful information in the presence of non-uniform films around the rod as well as in rivulet flows. The data are shown to be consistent with previously obtained data on liquid drainage flow rates for a variety of air and water incident flow rates. A simple model, based on laminar flow theory, reasonably explains the trends in film thickness variation.
