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Conference Spotlight
2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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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September 2025
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Latest News
Shifting the paradigm of supply chain
Chad Wolf
When I began my nuclear career, I was coached up in the nuclear energy culture of the day to “run silent, run deep,” a mindset rooted in the U.S. Navy’s submarine philosophy. That was the norm—until Fukushima.
The nuclear renaissance that many had envisioned hit a wall. The focus shifted from expansion to survival. Many utility communications efforts pivoted from silence to broadcast, showcasing nuclear energy’s elegance and reliability. Nevertheless, despite being clean baseload 24/7 power that delivered a 90 percent capacity factor or higher, nuclear energy was painted as risky and expensive (alongside energy policies and incentives that favored renewables).
Economics became a driving force threatening to shutter nuclear power. The Delivering the Nuclear Promise initiative launched in 2015 challenged the industry to sustain high performance yet cut costs by up to 30 percent.
Gary M. Sandquist
Nuclear Science and Engineering | Volume 37 | Number 3 | September 1969 | Pages 443-450
Technical Paper | doi.org/10.13182/NSE69-A19118
Articles are hosted by Taylor and Francis Online.
A method for determining stabilizing control functions for any first-order controllable system is presented. Examples of stabilizing feedback control are examined and corroborated for stability using the second method of Liapunov. Consideration of a general class of arbitrary degree stabilizing feedback-control functions reveals that linear feedback control produces the greatest damping. Examination of signal error and time delay in the control function shows that highly damping control can result in system oscillation. Finally the method is extended to systems of higher order and a stabilizing control function is found for the reactor-kinetic equations even with unmonitored delayed neutrons if the linear feedback-control gain is > β/l.
