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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.
Charles Hantouche
Nuclear Technology | Volume 65 | Number 3 | June 1984 | Pages 462-466
Technical Note | Fission Reactor | doi.org/10.13182/NT84-A33403
Articles are hosted by Taylor and Francis Online.
A comparison of local linear power densities measured with a gamma thermometer string (GTS) and with a fission chamber shows important discrepancies at the extremities of the assembly. The cause was revealed by a simulation of axial power distribution. These discrepancies appear to arise from inaccurate knowledge of the axial position of the GTS in the assembly. Using the method of fictitious displacement of a GTS, it was possible to reduce these discrepancies to <3.7%. One method of reducing this disadvantage could be to include the GTS in the fuel assemblies in the factory. By this way, it would be possible to eliminate passages for the string through the bottom of the core vessel.
