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Division Spotlight
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.
Meeting Spotlight
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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Nuclear Science and Engineering
July 2025
Nuclear Technology
June 2025
Fusion Science and Technology
Latest News
High-temperature plumbing and advanced reactors
The use of nuclear fission power and its role in impacting climate change is hotly debated. Fission advocates argue that short-term solutions would involve the rapid deployment of Gen III+ nuclear reactors, like Vogtle-3 and -4, while long-term climate change impact would rely on the creation and implementation of Gen IV reactors, “inherently safe” reactors that use passive laws of physics and chemistry rather than active controls such as valves and pumps to operate safely. While Gen IV reactors vary in many ways, one thing unites nearly all of them: the use of exotic, high-temperature coolants. These fluids, like molten salts and liquid metals, can enable reactor engineers to design much safer nuclear reactors—ultimately because the boiling point of each fluid is extremely high. Fluids that remain liquid over large temperature ranges can provide good heat transfer through many demanding conditions, all with minimal pressurization. Although the most apparent use for these fluids is advanced fission power, they have the potential to be applied to other power generation sources such as fusion, thermal storage, solar, or high-temperature process heat.1–3
B. A. Gusev, I. S. Orlenkov, L. N. Moskvin, N. G. Sandler, A. A. Efimov, А. M. Aleshin, V. V. Krivobokov, V. N. Vavilkin
Nuclear Technology | Volume 206 | Number 5 | May 2020 | Pages 791-803
Technical Note | doi.org/10.1080/00295450.2019.1693216
Articles are hosted by Taylor and Francis Online.
The technologies and chemical solutions for decontamination of high-power reactors are limited for use in small-scale power generation due to fundamental differences in operating conditions, fuel composition, fuel-element cladding structure, coolant water chemistry, and structural materials. The small space of the primary circuit and specific design and operational features have made it necessary to optimize the decontamination technologies for different stages of the naval rector plant (NRP) life cycle. Based on many years’ experience in maintenance, repair, and operation of NRPs, the principles for optimization of the process approaches are defined to reduce radioactive contamination of NRP equipment. In each particular case the decontamination technology is selected with due consideration for the NRP’s design, actual radioactive contamination, and the requirements for the cleanliness of the primary system after decontamination. This makes it possible to optimize the number of treatment cycles/stages and reagent consumption and to minimize the probability of recurrent deposit formation and the liquid radwaste amount.
