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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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ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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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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Prepare for the 2025 Nuclear PE Exam with ANS guides
The next opportunity to earn professional engineer (PE) licensure in nuclear engineering is this fall, and now is the time to sign up and begin studying with the help of materials like the online module program offered by the American Nuclear Society.
Edgar L. Compere and Jouko E. Savolainen
Nuclear Science and Engineering | Volume 28 | Number 3 | June 1967 | Pages 325-337
Technical Paper | doi.org/10.13182/NSE67-A28946
Articles are hosted by Taylor and Francis Online.
The solubility of hydrogen in liquid alkali metals useful as nuclear reactor coolants varies significantly with pressure and temperature. The solubility of hydrogen in eutectic sodium-potassium mixture (NaK-78) was determined at six temperatures from 300 to 704°C and at pressures below one atmosphere. For unsaturated solutions, the solubility depended on the square root of the hydrogen pressure and varied only slightly with temperature. At temperatures of 300 to 400°C, enough hydrogen could be dissolved at pressures below one atmosphere to result in precipitation of a metal hydride. Precipitation-decomposition pressures were consistent with the literature. The addition to NaK-78 of 1 to 4 at.% lithium considerably diminished the hydrogen activity and resulted in precipitation at lower hydrogen pressure. A mass action model is postulated to explain the phenomena. It is suggested that in liquid-alkali-metal mixtures, dissolved hydrogen exists largely in the form of undissociated metal-hydride molecules or ion pairs, with the different metals combining with the hydrogen in proportion to their concentration and their affinity for hydrogen.
