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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
2023 ANS Annual Meeting
June 11–14, 2023
Indianapolis, IN|Marriott Indianapolis Downtown
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
Destruction of Ukrainian dam threatens Zaporizhzhia
A Soviet-era dam downstream from the Zaporizhzhia nuclear power plant in southeastern Ukraine collapsed last evening, causing the water level of the Kakhovka Reservoir north of the dam to drop and raising new concerns over the already jeopardized safety of the Russian-occupied nuclear facility, Europe’s largest. The reservoir supplies water for, among other things, Zaporizhzhia’s cooling systems.
Aya Diab, Michael Corradini
Nuclear Science and Engineering | Volume 165 | Number 2 | June 2010 | Pages 180-199
Technical Paper | doi.org/10.13182/NSE08-18
Articles are hosted by Taylor and Francis Online.
Two-dimensional (2-D) experiments have been conducted to study the phenomenon of liquid entrainment associated with interfacial hydrodynamic instabilities, in particular, the Rayleigh-Taylor instability (RTI). The current work is part of an effort to understand the phenomenon of RTI associated with the rapid expansion of a superheated steam bubble that may occur in a CANDU reactor. The goal of the present work is to quantify the entrainment phenomenon associated with the RTI pertinent to the growth of a 2-D air bubble expanding adiabatically against a 2-D pool of water for a range of operating pressures. This experimental work is similar to that undertaken three decades ago at Massachusetts Institute of Technology, but the geometry has been modified to decrease the blowdown chute volume in order to reduce the experimental uncertainties. The entrainment phenomenon is characterized by means of two parameters that can be used to verify a semiempirical model developed in a parallel modeling effort. Specifically, the first parameter quantifies the width of the mixing zone, and the second parameter quantifies the volumetric ratio between the entrained liquid and the mixing zone. Comparing the experimental data with the model predictions is used to validate the developed model.