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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
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
Commercial nuclear innovation "new space" age
In early 2006, a start-up company launched a small rocket from a tiny island in the Pacific. It exploded, showering the island with debris. A year later, a second launch attempt sent a rocket to space but failed to make orbit, burning up in the atmosphere. Another year brought a third attempt—and a third failure. The following month, in September 2008, the company used the last of its funds to launch a fourth rocket. It reached orbit, making history as the first privately funded liquid-fueled rocket to do so.
Robert Martin
Nuclear Science and Engineering | Volume 48 | Number 2 | June 1972 | Pages 125-138
Technical Paper | doi.org/10.13182/NSE72-A22466
Articles are hosted by Taylor and Francis Online.
This article presents the results of an experimental study of the void fraction at high pressure (80 to 140 kg/cm2) in two rectangular channels (5 × 0.2 and 5 × 0.28 cm) simulating a subchannel of a nuclear reactor plate-type fuel element. The method enabled the distribution of the local void fraction in a cross section to be measured at about 100 locations; from these local values it was possible to determine accurate mean values and to precisely quantitate the influence of the parameters: pressure, mass velocity, and heat flux. This distributions of void fractions, among the first to be determined in this range of pressures, were obtained from 120 000 systematic, individual measurements, sufficient to allow accurate interpolations in the experimental region under consideration which included subcooled conditions. These results enabled testing certain models presented in the literature. Analyses with the Bowring model, for example, are in good agreement with present experimental data at 80 kg/cm2. The purpose of this study was not to establish a new model but to furnish accurate data for verification or, if necessary, adjustment of existing models.