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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.
J. G. BAYLY, R. M. PEARCE
Nuclear Science and Engineering | Volume 2 | Number 3 | May 1957 | Pages 352-362
Technical Paper | doi.org/10.13182/NSE57-A25400
Articles are hosted by Taylor and Francis Online.
An electrical analog is described for the study of reactors whose nuclear properties vary with radius. Several neutron velocity groups can be used. The reactor is divided in uniform homogeneous regions which may be either slabs, spherical shells, or cylindrical shells. The group parameters may be independently varied in these regions and the analog immediately obtains the reactivity. The analog also yields the space distribution of the various neutron groups after being adjusted to the critical condition. A commercial, general purpose analog computer has been adapted to this problem. The analog can also solve the adjoint diffusion equations.