ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
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Division Spotlight
Thermal Hydraulics
The division provides a forum for focused technical dialogue on thermal hydraulic technology in the nuclear industry. Specifically, this will include heat transfer and fluid mechanics involved in the utilization of nuclear energy. It is intended to attract the highest quality of theoretical and experimental work to ANS, including research on basic phenomena and application to nuclear system design.
Meeting Spotlight
ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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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El Salvador: Looking to nuclear
In 2022, El Salvador’s leadership decided to expand its modest, mostly hydro- and geothermal-based electricity system, which is supported by expensive imported natural gas and diesel generation. They chose to use advanced nuclear reactors, preferably fueled by thorium-based fuels, to power their civilian efforts. The choice of thorium was made to inform the world that the reactor program was for civilian purposes only, and so they chose a fuel that was plentiful, easy to source and work with, and not a proliferation risk.
Fernando Ferrante, Stuart Lewis
Nuclear Technology | Volume 207 | Number 3 | March 2021 | Pages 413-423
Technical Paper | doi.org/10.1080/00295450.2020.1775451
Articles are hosted by Taylor and Francis Online.
This work explores recent developments in severe accident analysis and risk assessment to inform and expand on these perspectives. Variations in nuclear reactor safety policy, reactor designs, extent of use of risk information in decision making, and other aspects can impact how safety policies regarding nuclear installations are developed and implemented. In particular, the relationship of nuclear policy in the United States is explored with regard to quantitative risk criteria or goals and their relationship with health objectives. In the United States and many countries around the world, health objectives are defined with regard to the potential impact to the public in terms of “early” fatalities and “latent” fatalities. This paper discusses how the link between these health objectives and quantitative risk goals have been developed and how recent information may change the perspective originally held when the policies were established (e.g., that there would be a significant margin between the risk of operating nuclear facilities and these goals). Given that these metrics play a significant role in how current risk applications are used for operating nuclear reactors, especially when results are to be compared with thresholds, it is important to recognize the evolution and current understanding of associated embedded margins. Given the additional 30 years of insights, the expansion of risk application in the commercial nuclear reactor industry, and improvements in methodologies and computing capabilities, significant additional information has been gained. These insights are discussed and presented in this paper.