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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
Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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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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 since 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. local time 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.”
J. L. Carvalho (Golder Associates), A. Ž. Živkovi?, A. Lee (NWMO)
Proceedings | 16th International High-Level Radioactive Waste Management Conference (IHLRWM 2017) | Charlotte, NC, April 9-13, 2017 | Pages 446-451
The Nuclear Waste Management Organization (NWMO) is responsible for implementing Adaptive Phased Management (APM); the approach selected by the Government of Canada for long-term management of Canada’s used nuclear fuel.
The Canadian program is in the conceptual stages and layouts have been advanced to facilitate communication about the disposal concept, but without the benefit of having a specific site identified as the host for the repository. The Canadian layouts to date have assumed that a large enough homogeneous and isotropic domain of rock will be available to host the repository; therefore the layouts tend to be of very regular geometries and compact. Other countries, such as Finland and Sweden, have identified their hosting locations which exhibit crystalline geosphere conditions. They started the development of adaptive (flexible) site-specific underground layouts capable of adjusting to encountered structural anisotropy. When viewed from this angle, it is possible that a number of Canadian candidate sites in crystalline geosphere would exhibit similar features. With this recognition, NWMO has started the development of adaptive layouts.
This paper presents the results of the first comparative study between the base case (regular and compact) and more adaptive layouts applied to a hypothetical Canadian crystalline geosphere. The Pugh Matrix (opportunity analysis) suitable for early design stages is used for comparative studies taking into consideration various factors including cost, schedule, site characterization requirements, constructability, operational flexibility, maintainability, operational safety and long-term safety, etc. It was concluded that the concepts represented in the adaptive layout offer advantages in relation to flexibility, schedule, post closure safety and thermal performance that may justify a deviation from the base case once a site has been selected.