ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Division Spotlight
Isotopes & Radiation
Members are devoted to applying nuclear science and engineering technologies involving isotopes, radiation applications, and associated equipment in scientific research, development, and industrial processes. Their interests lie primarily in education, industrial uses, biology, medicine, and health physics. Division committees include Analytical Applications of Isotopes and Radiation, Biology and Medicine, Radiation Applications, Radiation Sources and Detection, and Thermal Power Sources.
Meeting Spotlight
International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2025)
April 27–30, 2025
Denver, CO|The Westin Denver Downtown
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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Nuclear Science and Engineering
May 2025
Nuclear Technology
Fusion Science and Technology
Latest News
TerraPower begins U.K. regulatory approval process
Seattle-based TerraPower signaled its interest this week in building its Natrium small modular reactor in the United Kingdom, the company announced.
TerraPower sent a letter to the U.K.’s Department for Energy Security and Net Zero, formally establishing its intention to enter the U.K. generic design assessment (GDA) process. This is TerraPower’s first step in deployment of its Natrium technology—a 345-MW sodium fast reactor coupled with a molten salt energy storage unit—on the international stage.
Ernest E. Hill
Nuclear Technology | Volume 1 | Number 2 | April 1965 | Pages 131-135
Technical Paper | doi.org/10.13182/NT65-A20479
Articles are hosted by Taylor and Francis Online.
The fuel-cycle program for operating the Livermore Pool Type Reactor was initiated in 1960 and subsequently modified in several respects. The effects of these modifications on the program of managing the fuel and the excess reactivity are discussed. The results of three years (32 cycles) of operation indicate equilibrium values for the five parameters studied to be 3550g 235U, 510 g fission products, 0.767 thermal utilization, 12.5% average core burnup, with spent fuel rejected at 21.7% burnup. The thermal utilization is seen to follow the relationship f = 0.798 − 0.00113 × MWd cycle.
