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Meeting Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
Standards Program
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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Nuclear Technology
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July 2025
Latest News
The U.S. Million Person Study of Low-Dose-Rate Health Effects
There is a critical knowledge gap regarding the health consequences of exposure to radiation received gradually over time. While there is a plethora of studies on the risks of adverse outcomes from both acute and high-dose exposures, including the landmark study of atomic bomb survivors, these are not characteristic of the chronic exposure to low-dose radiation encountered in occupational and public settings. In addition, smaller cohorts have limited numbers leading to reduced statistical power.
Jonathan Naish, Frances Fox, Zamir Ghani, Michael Loughlin, Lee Packer, Andrew Turner
Nuclear Technology | Volume 192 | Number 3 | December 2015 | Pages 299-307
Technical Paper | Accelerators | doi.org/10.13182/NT14-132
Articles are hosted by Taylor and Francis Online.
The Applied Radiation Physics Group at Culham Centre for Fusion Energy, United Kingdom, has developed and applied state-of-the-art radiation mapping methods and tools. The tools enable complex shielding calculations in and around fusion devices, both during and after plasma operations, to inform on associated radiation fields for operational, maintenance, and remote handling scenarios, for example. Here, we present a description and application of those tools to produce radiation maps to support (a) the Joint European Torus (JET) operational safety case for a new D-T campaign that is foreseen for 2020, with neutron emission rates in excess of 1018 n/s and a total neutron yield up to 1.7 × 1021 n, and (b) the ITER device.
Three tools are presented in this paper: An automated global variance reduction tool applied to the JET facility; a portable bounding surface source referred to as a mesh source, which has been applied to activated materials; and a smeared source routine, which enables the calculation of integral fields associated with moving sources. These tools are demonstrated, in combination, to produce the integrated three-dimensional dose map of an activated divertor component being transported through a path within the ITER facility.