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
Reactor Physics
The division's objectives are to promote the advancement of knowledge and understanding of the fundamental physical phenomena characterizing nuclear reactors and other nuclear systems. The division encourages research and disseminates information through meetings and publications. Areas of technical interest include nuclear data, particle interactions and transport, reactor and nuclear systems analysis, methods, design, validation and operating experience and standards. The Wigner Award heads the awards program.
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!
Latest Magazine Issues
Apr 2025
Jan 2025
Latest Journal Issues
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.
Markku Lehtonen
Nuclear Technology | Volume 207 | Number 9 | September 2021 | Pages 1329-1350
Technical Paper | doi.org/10.1080/00295450.2021.1885952
Articles are hosted by Taylor and Francis Online.
The nuclear sector finds itself at a critical juncture, in part because recent large nuclear power plant projects in Europe and the United States have suffered from what some scholars have called megaproject “pathologies,” that is, the chronic failure of large, complex infrastructure projects to fulfill the “iron triangle” criteria of project performance: cost, timetable, and predefined project prescriptions. To explore the framings of such problems within the nuclear community, this paper analyzes the ways in which 19 experts at the Nuclear Energy Agency (NEA), under the Organisation for Economic Co-operation and Development (OECD) diagnose such problems and their underlying causes. The analysis draws on framing theory and on the scholarship on megaprojects, with semistructured interviews providing the empirical material.
The identified four frames highlight as key explanations for pathologies the “vicious circle” of lacking investment, erosion of skills, and construction problems; “bureaucratization and contractualization”; “broken markets”; and “complexity and nuclear-sector exceptionality.” Two overarching metaframes attribute the ultimate reasons to factors outside the projects and the nuclear community, notably to the lack of political leadership and the inability of the modern Western society to identify and pursue its own interest. The NEA frames bear significant resemblance to the alternative megaproject literature, which calls into question the very notion of pathology; stresses the complex, open systems character of megaprojects; and calls for flexibility and adaptability to better align megaprojects with their evolving context. However, the vital need to ensure and maintain an appropriate fit between nuclear-sector megaprojects and their ever-evolving environment deserves greater attention. Toward this end, introduction of OECD-style country peer reviews could constitute an opportunity toward collective “frame reflection,” in interaction with communities offering competing framings of the pathologies. Further research would be welcome on the role of the NEA in framing processes within the nuclear community and on the relationships between megaprojects and modernity in this high-risk industry.