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Conference Spotlight
2026 Annual Conference
May 31–June 3, 2026
Denver, CO|Sheraton Denver
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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Seconds Matter: Rethinking Nuclear Facility Security for the Modern Threat Landscape
In today’s rapidly evolving threat environment, nuclear facilities must prioritize speed and precision in their security responses—because in critical moments, every second counts. An early warning system serves as a vital layer of defense, enabling real-time detection of potential intrusions or anomalies before they escalate into full-blown incidents. By providing immediate alerts and actionable intelligence, these systems empower security personnel to respond decisively, minimizing risk to infrastructure, personnel, and the public. The ability to anticipate and intercept threats at the earliest possible stage not only enhances operational resilience but also reinforces public trust in the safety of nuclear operations. Investing in such proactive technologies is no longer optional—it’s essential for modern nuclear security.
D. Okrent, W. B. Loewenstein, A. D. Rossin, A. B. Smith, B. A. Zolotar, J. M. Kallfelz
Nuclear Technology | Volume 9 | Number 4 | October 1970 | Pages 454-507
Department | Reactor | doi.org/10.13182/NT70-A28760
Articles are hosted by Taylor and Francis Online.
This paper examines the neutron-energy spectra of sodium-cooled fast reactors, with primary attention given to the neutron-energy range from 30 keV to 10 MeV, the major source of irradiation damage in a fast reactor. The status of relevant fast neutron cross-section knowledge is examined, and the influence of cross-section uncertainties is included in the comparison of theoretical predictions with experiment. Also examined, are differences among various theoretical methods and problems in determining the spectrum in real systems with interfaces and heterogeneities. The current status of studies of the EBR-II flux and spectrum is summarized, including determination of absolute flux magnitude and two-dimensional estimates of the considerable influence of neighboring subassemblies and experimental heterogeneity on the very high energy spectrum. Finally, the relationship between flux monitor data, knowledge of spectra, and radiation damage is discussed.
