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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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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.
L. Moberg, J. Kockum
Nuclear Science and Engineering | Volume 52 | Number 3 | November 1973 | Pages 343-349
Technical Paper | doi.org/10.13182/NSE73-A19481
Articles are hosted by Taylor and Francis Online.
The effective delayed-neutron fraction, βeff, has been measured in three cores of the fast zero power reactor FRO. The variance-to-mean method, in which the statistical fluctuations of the neutron density in the reactor are studied, was used. The experimental results were compared with theoretical values of βeff calculated with perturbation theory. The difference was at most 10%, which should be com-pared to the accuracy in the experimental values of ≈3%.
