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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.
W. A. Woolson, M. L. Gritzner
Nuclear Technology | Volume 49 | Number 3 | August 1980 | Pages 410-425
Technical Paper | Fuel Cycle | doi.org/10.13182/NT80-A17689
Articles are hosted by Taylor and Francis Online.
The response of neutron logging tools used for uranium exploration to variations in tool design, borehole parameters, and rock matrix properties has been studied using discrete ordinates and Monte Carlo radiation transport methods. The logging techniques that have been analyzed include the measurement of signal radiation due to delayed fission neutrons and prompt fission neutrons generated in uranium ore by pulsed 14-MeV and iso topic 252Cf neutron sources. The effect of variations in the following parameters has been studied: source-detector separation, tool casing, borehole diameter, mudcake thickness, mud filtrate invasion, tool eccentricity, borehole casing, rock matrix composition, matrix moisture content, formation water composition, neutron poisons, thin ore beds, ore bed dipping angle, and ore grade. “Noise” radiation from fast fission in thorium ore and delayed oxygen neutrons has also been computed and compared to the signal radiation as a function of uranium and thorium ore grades, borehole size, and rock moisture concentration. Evaluation models have been produced to aid in calibration of the logging tools for uranium assay.
