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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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2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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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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Excelsior University student section awarded community education grant
The American Nuclear Society Student Section at Excelsior University in Albany, N.Y., was awarded a $5,000 grant from the ANS Student Section Strategic Fund initiative for its program, Empowering Tomorrow’s Nuclear Innovators: A Collaborative Approach to Nuclear Technology Education and Awareness.
Faten N. Al Zubaidi, Kyle L. Walton, Robert V. Tompson, Tushar K. Ghosh, Sudarshan K. Loyalka
Nuclear Technology | Volume 205 | Number 7 | July 2019 | Pages 951-963
Regular Technical Paper | doi.org/10.1080/00295450.2019.1573618
Articles are hosted by Taylor and Francis Online.
The total hemispherical emissivity of A508/A533B alloy steels was measured for conditions of interest in nuclear plant safety. The effect of long-term oxidation on the emissivity of A508/A533B was simulated by oxidizing test samples using a three-zone tube furnace at temperatures of 573 and 773 K. An apparatus built and operated in compliance with the American Society for Testing and Materials C835-06 testing standard was used to measure the total hemispherical emissivity for the following surface conditions: (1) mirror-like polished (unoxidized), (2) polished surface oxidized in air, (3) wire-cut electrical discharge machining (EDM), and (4) EDM-cut surface oxidized in air. The emissivity of polished (unoxidized) A508/A533B strips varied from 0.16 to 0.24 within the temperature range from 552 to 1180 K. Increasing the oxidation time of polished A508/A533B from 10 to 100 h at 573 K provided slight increase in emissivity, whereas increasing the oxidation temperature from 573 to 773 K for a 10-h duration provided over a threefold increase in emissivity. EDM-cut surfaces had an emissivity of 0.51 at 464 K to 0. 54 at 845 K due to the inherent roughness and the presence of a recast layer and possible oxidation layer. Oxidizing EDM-cut A508/A533B in air at 573 K increased the emissivity compared to the unoxidized EDM-cut A508/A533B, but no additional increase in emissivity occurred from 500- to 1000-h durations. Further oxidation of A508/A533B oxidized at 573 K for 1000 h for an additional 500 h at 773 K resulted in spallation of the oxide layer. The emissivity of the sample with loose oxide removed had similar emissivity for EDM-cut A508/A533B at 537 K.