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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
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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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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
Isao Aoki, Satoshi Konishi, Ryouichi Kurihara, Yasunori Iwai, Masataka Nishi
Fusion Science and Technology | Volume 41 | Number 3 | May 2002 | Pages 835-839
Design and Model | Proceedings of the Sixth International Conference on Tritium Science and Technology Tsukuba, Japan November 12-16, 2001 | doi.org/10.13182/FST02-A22702
Articles are hosted by Taylor and Francis Online.
The inherent delays in components of fuel processing subsystems of fusion reactor on the pulse operation were simulated to analyze the time dependent tritium inventory in the tritium storage with the time in the throughput capacity of the fuel processing to that required to satisfy pulse operation cycle repetition. The simulation results of inherent delays in components of fuel processing subsystems demonstrates that tritium inventory in the tritium storage is influenced by a cumulative time lag system responses on the pulse operation continuity even when adoption of duty cycle is sustained. To satisfy pulse operation up to long pulse specified the capacity of the fuel processing subsystems and tritium storage will need to be increased by a number of fuel storage beds. Variation with the time of tritium product from isotope separation subsystem determines the time dependent characteristic of tritium inventory in the tritium storage. Representative value defined by the inherent system responses provides an information of optimum condition of pulse operation campaign.
