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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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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.
A. Monier
Nuclear Science and Engineering | Volume 120 | Number 2 | June 1995 | Pages 91-101
Technical Paper | doi.org/10.13182/NSE95-A24110
Articles are hosted by Taylor and Francis Online.
A piecewise polynomial collocation approximation of the shape function is applied to Volterra’s form of the quasi-static equations. This formulation of the quasi-static method does not require the imposition of an arbitrary constraint. The resulting set of nonlinear unconstrained quasi-static (UQS) equations is solved by using fixed-point iteration. The shape equation, which is similar in form to those obtained by using Padé’s algorithms, is solved with a second-order variational minimization technique. The results of this formulation are then compared with other quasi-static solutions for a typical Canada deuterium uranium (CANDU) reactor safety analysis calculation.
