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Conference Spotlight
2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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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.
Hideki Takano, Kunio Kaneko, Hiroshi Akie, Yukio Ishiguro
Nuclear Technology | Volume 80 | Number 2 | February 1988 | Pages 250-262
Technical Paper | Advanced Light Water Reactor / Fission Reactor | doi.org/10.13182/NT88-A34049
Articles are hosted by Taylor and Francis Online.
The resonance self-shielding effect of fission products on burnup characteristics has been investigated in high conversion light water reactors. Reactivity loss by burnup was considerably reduced by taking account of the self-shielding effects of fission products. The effect caused a difference of ∼0.6% for the multiplication factor at 50 GWd/tonne burnup and it contributed to a negative void reactivity. Furthermore, the mutual shielding effects of resonance overlapping among actinides and fission products have been examined and observed for several fission products. The effect of nuclear data uncertainties of fission products on the burnup reactivity change has been also examined by comparing the results obtained with four evaluated nuclear data files: JENDL-2, JEF-1, ENDF/B-IV, and -V. Fractional absorption rates for individual fission product nuclides were considerably scattered among these files. A significant difference between the reactivity changes calculated with JENDL-2 and ENDF/B-V was observed, while the discrepancy between those obtained with JENDL-2 and JEF-1 was small due to an accidental cancellation.
