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
Nuclear Installations Safety
Devoted specifically to the safety of nuclear installations and the health and safety of the public, this division seeks a better understanding of the role of safety in the design, construction and operation of nuclear installation facilities. The division also promotes engineering and scientific technology advancement associated with the safety of such facilities.
Meeting Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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
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July 2025
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Latest News
DOE opens pilot program to authorize test reactors outside national labs
Details of the plan to test new reactor concepts under the Department of Energy’s authority but outside national laboratory boundaries—first outlined in one of the four executive orders on nuclear energy released on May 23—were just released in a request for applications issued by the DOE.
Yasunori Kitamura, Yuta Eguchi
Nuclear Science and Engineering | Volume 178 | Number 3 | November 2014 | Pages 401-413
Technical Paper | doi.org/10.13182/NSE14-21
Articles are hosted by Taylor and Francis Online.
A series of integral reactor physics experiments conducted at the Very High Temperature Reactor Critical Assembly was analyzed to assemble it into a benchmark through an extensive peer-review process under the International Reactor Physics Experiment Evaluation Project. This benchmark provides the experimental data with respect to the criticalities of seven core configurations and the temperature effect on reactivity up to 200°C with explicit experimental uncertainties newly evaluated. It further presents the benchmark models and corresponding values with some simplifications so that it can be used by reactor designers for validating the analytical tools employed to design next-generation reactors and for establishing the safety basis for operation of these reactors.