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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.
Shih-Jen Wang, Chun-Sheng Chien, Suh-Chyn Jeng
Nuclear Technology | Volume 105 | Number 3 | March 1994 | Pages 447-456
Technical Paper | Radiation Protection | doi.org/10.13182/NT94-A34943
Articles are hosted by Taylor and Francis Online.
A plant analyzer was developed for the Kuosheng power station, based on the AD-100 peripheral processor system. To analyze a transient from partial power conditions, the initial steady-state conditions must be generated in advance. A self-initialization algorithm for generating the initial partial power conditions has been developed. The initialization of the rated power conditions is performed first. The self-initialization algorithm then simultaneously adjusts important plant variables, such as the reactor power, dome pressure, downcomer level, feedwater temperature, and core flow, to the desired partial power conditions from the rated conditions with the aid of existing plant control systems and four extra control loops. This algorithm was developed and encoded in the Kuosheng plant analyzer. The initialization for a recirculation pump trip test at 68% of rated power demonstrates the success of this algorithm. The initial conditions generated can be saved and used for transient analysis. Tedious and time-consuming trial-and-error initialization procedures are eliminated. This methodology improves the accuracy and consistency of transient calculations for partial power conditions.