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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.
Meeting Spotlight
2025 ANS Annual Conference
June 15–18, 2025
Chicago, IL|Chicago Marriott 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
Germany’s Unterweser completes removal of steam generators
All four steam generators at Germany’s Unterweser nuclear power plant have been removed from the reactor building, plant owner PreussenElektra has announced. The single-unit pressurized water reactor was shut down in 2011 as part of Germany’s decision to phase out nuclear energy. Decommissioning and dismantlement of the reactor began soon after PreussenElektra was granted a permit for the work in February 2018.
P. Krautwasser, H. Nickel
Nuclear Technology | Volume 35 | Number 2 | September 1977 | Pages 310-319
Pyrocarbon | Coated Particle Fuel / Fuel | doi.org/10.13182/NT77-A31891
Articles are hosted by Taylor and Francis Online.
The pore-size distribution of pyrocarbon (PyC) coatings was measured by small-angle x-ray scattering. The method proved to be a very sensitive means of characterizing the microstructure of PyC’s. Variations in deposition conditions — such as temperature, hydrocarbon gas, and gas flux—lead to distinct variations in pore-size distribution. Different pore-size intervals are related to such material properties as density and fracture stress as well as to the irradiation stability and gas permeability of low-temperature isotropic (LTI) coatings. A parametric property, the relative amount of fiber component, is derived from the pore-size distribution and correlated with the microstructural components of LTI coatings as well as with the irradiation performance.
