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Nuclear Nonproliferation Policy
The mission of the Nuclear Nonproliferation Policy Division (NNPD) is to promote the peaceful use of nuclear technology while simultaneously preventing the diversion and misuse of nuclear material and technology through appropriate safeguards and security, and promotion of nuclear nonproliferation policies. To achieve this mission, the objectives of the NNPD are to: Promote policy that discourages the proliferation of nuclear technology and material to inappropriate entities. Provide information to ANS members, the technical community at large, opinion leaders, and decision makers to improve their understanding of nuclear nonproliferation issues. Become a recognized technical resource on nuclear nonproliferation, safeguards, and security issues. Serve as the integration and coordination body for nuclear nonproliferation activities for the ANS. Work cooperatively with other ANS divisions to achieve these objective nonproliferation policies.
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2025 ANS Annual Conference
June 15–18, 2025
Chicago, IL|Chicago Marriott 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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Latest News
Zaporizhzhia ‘extremely fragile’ relying on single off-site power line, IAEA warns
Europe’s largest nuclear power plant has just one remaining power line for essential nuclear safety and security functions, compared with its original 10 functional lines before the military conflict with Russia, warned Rafael Mariano Grossi, director general of the International Atomic Energy Agency.
Kusuma Dewi, Akira Hasegawa, Satoshi Otsuka, Katsunori Abe
Fusion Science and Technology | Volume 39 | Number 2 | March 2001 | Pages 585-589
Fusion Materials | doi.org/10.13182/FST01-A11963300
Articles are hosted by Taylor and Francis Online.
In ITER, austenitic stainless steels are under consideration as a blanket structural material for temperature below 200°C. Transmuted helium will be also produced in austenitic stainless steels by high-energy neutron irradiation, and it will affect microstructural development including grain boundary segregation. In this paper, the effects of helium on grain boundary segregation in austenitic stainless steels are studied using ion-irradiation experiment.
The result showed that the onset of radiation induced segregation (RIS) by proton irradiation occurs somewhere between 0.1 and 0.5 dpa. Helium pre-implantation significantly reduced RIS of the major alloying elements. Mechanisms are discussed. Comparison of this result with neutron irradiated induced segregation showed qualitative agreement in the data trends. However, a large amount of segregation was observed in the proton irradiated 304 austenitic stainless steels specimens.
