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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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Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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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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Latest News
Vogtle-3 shuts down for valve issue
One of the new Vogtle units in Georgia was shut down unexpectedly on Monday last week for a valve issue that has been investigated and repaired. According to multiple local news outlets, Georgia Power reported on July 17 that unit 3 was back in service.
Southern Company spokesperson Jacob Hawkins confirmed that Vogtle-3 went off line at 9:25 p.m. on July 8 “due to lowering water levels in the steam generators caused by a valve issue on one of the three main feedwater pumps.”
H. Zush et al.
Fusion Science and Technology | Volume 55 | Number 2 | February 2009 | Pages 9-14
Technical Paper | Seventh International Conference on Open Magnetic Systems for Plasma Confinement | doi.org/10.13182/FST09-A6975
Articles are hosted by Taylor and Francis Online.
Hydrogen reemission and retention from and in the inert gas plasma sprayed tungsten (IPS-W) exposed to the plasma are described. Two kinds of irradiation scenarios are investigated in continuous and cyclic exposures. In the later a recovery phase exists between plasma exposure phases, simulated to the regular tokamak discharges. The H retention at the surface temperature Ts of 600 ~ 900 K was evaluated from 4 × 1020 m-2 to 2 × 1022 m-2 at the fluence from 1 × 1024 m-2 to 1 × 1026 m-2 under continuous exposure conditions. For the cyclic exposure, two cases associated temperature variation during the cycle, large Ts > 100 K and small < 40 K, are investigated. The temperature rise Ts dependence of the reemission and retention is observed. When Ts > 100 K, the apparent reemission is triggered by both Ts and irradiation itself, and then after the exposure stops it turns to apparent retention. However, for Ts < 40 K no reemission and retention are observed in the cycle. This fact suggests that the hydrogen reemission is enhanced during the exposure via the surface recombination process depending on Ts or Ts gradient across the specimen.