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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
Proving DRACO will deliver
The United States is now closer than it has been in over five decades to launching the first nuclear thermal rocket into space, thanks to DRACO—the Demonstration Rocket for Agile Cislunar Orbit.
Geethpriya Palaniswaamy, Sudarshan K. Loyalka
Nuclear Technology | Volume 160 | Number 2 | November 2007 | Pages 187-204
Technical Paper | Reactor Safety | doi.org/10.13182/NT160-187
Articles are hosted by Taylor and Francis Online.
Nuclear aerosols formed during nuclear reactor accidents or explosions evolve via natural transport processes as well as under the influence of engineered safety features. These aerosols can be hazardous and may pose risk to the public if released into the environment. Computations of their evolution, movement, and distribution involve the study of various processes such as coagulation, deposition, condensation, evaporation, etc., and are influenced by factors such as particle shape, charge, radioactivity, and spatial inhomogeneity. These many processes and factors make the numerical study of nuclear aerosol evolution computationally very complicated. The Direct Simulation Monte Carlo (DSMC) technique was developed to elucidate the role of various phenomena that influence the evolution of nuclear aerosols. This will allow, then, for an assessment of the limitations of other methods used at present. Coagulation, deposition, and source reinforcement processes for a multicomponent, aerosol dynamics problem have been explored. As a simple verification, the DSMC results were compared with analytical results for a single-component aerosol dynamics problem with coagulation and deposition processes. In addition, the DSMC results were compared against those obtained using the sectional method for several multicomponent test problems with the same component densities. It is clear from the present results that the assumption of a single mean density is not appropriate in such problems because of the complicated effect of component densities on the aerosol processes.