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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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August 2024
Nuclear Technology
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Latest News
Constellation seeks rezone for property adjacent to Illinois plant
While no development details have been released, Constellation is asking to rezone 658.8 acres of land it owns around the Byron nuclear plant in Illinois for possible long-term use.
Yoshiro Nishioka, Satoru Kuboya, Yuya Takahashi, Hideki Horie, Mika Tahara (Toshiba Energy Systems & Solutions Corp), Tadashi Fujii (Hitachi-GE Nuclear Energy, Ltd), Takafumi Tsuji (Chubu Electric Power Co., Inc.)
Proceedings | 2018 International Congress on Advances in Nuclear Power Plants (ICAPP 2018) | Charlotte, NC, April 8-11, 2018 | Pages 223-228
The passive debris cooling system provides a means to stably hold and cool the molten core (debris) dropped from the reactor vessel by the heat resistant material laid on the bottom of the containment vessel. As a heat resistant material, high melting point and highly corrosion-resistant oxide is laid on the pedestal and water is injected afterwards to suppress MCCI by the molten core. In the past research, although knowledge about molten core and concrete has been acquired, knowledge about interaction between molten core and heat resistant material is insufficient. Therefore, element tests on heat resistant materials were conducted, various heat resistant materials were screened, and molten core - heat resistant material interaction model was constructed using the obtained findings. Using the constructed model, we evaluated the erosion / heat transfer behavior of the heat resistant material assuming the bottom of the BWR / Mark - II type containment vessel at the time of severe accident and confirmed the MCCI suppression effect by the passive debris cooling system.