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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.
S. L. Sutter, J. W. Johnston, P. C. Owzarski, J. Mishima, L. C. Schwendiman
Nuclear Technology | Volume 52 | Number 1 | January 1981 | Pages 100-104
Technical Paper | Fuel | doi.org/10.13182/NT81-A32693
Articles are hosted by Taylor and Francis Online.
Release of plutonium dioxide from a breached shipping container was simulated using depleted uranium dioxide. Microgram quantities of the powder were carried by pressurized air through very small openings in a vessel approximately the same dimensions as a shipping container. Powder transmission was measured as a function of upstream pressure above and below the static powder level. Controlling parameters for the powder transmission were the cross-sectional area of the opening, opening characteristics, i.e., orifice or capillary, and chamber pressure. After a decision on leak location and configuration, powder leakage can be estimated using the relationship ln(A√P), where A is the area and P is the gauge pressure. Given a once-a-month event rate, expected maximum powder transmitted per event through a 38-µm opening by 6895-kPa (1000-psig) pressure would be 287 µg for a leak below the static and 46 µg above. Average values would be 11% of this maximum.
