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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.
M. E. Anderson
Nuclear Technology | Volume 52 | Number 3 | March 1981 | Pages 428-430
Technical Note | Fission Reactor | doi.org/10.13182/NT81-A32717
Articles are hosted by Taylor and Francis Online.
Neutron yields of 239Pu-Be(α,n) sources are increasing due to the buildup of 241 Am, an alpha emitter, from the beta decay of 241 Pu. The yields and heat outputs of four sources, in which PuBe13 was formed during fabrication, have been followed for several years. Rates of increase in neutron yields at t = 0 vary from 0.3 to 1.9%/yr for initial 241 Pu contents from 0.10 to 0.70%. For three of these sources the increase in neutron yield follows the radioactive decay of the constituents. For the fourth, the increase in neutron yield is greater than expected. A possible explanation is offered.