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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.
H. J. Kopp
Nuclear Science and Engineering | Volume 17 | Number 1 | September 1963 | Pages 65-74
Technical Paper | doi.org/10.13182/NSE63-1
Articles are hosted by Taylor and Francis Online.
A general residue iteration method (the synthetic method) is described and applied to the solution of the neutron transport equation. For example, a possible solution is the synthesis of a sequence of solutions to diffusion equations, each having a residue source. Only time independent systems consisting of isotropic scattering material of arbitrary geometry are considered herein. Exact solutions, approximate solutions, and the refinement of existing approximate methods can be accomplished within the framework of the synthetic method.