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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 Winter Conference and Expo
November 17–21, 2024
Orlando, FL|Renaissance Orlando at SeaWorld
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K-25 viewing platform takes shape at Oak Ridge
Crews are making significant progress on the construction of the K-25 viewing platform at the Oak Ridge Reservation in Tennessee, the Department of Energy’s Office of Environmental Management announced on August 20. When completed next year, the elevated platform will offer a sweeping panoramic view of the massive 44-acre footprint of the K-25 Building, which once produced enriched uranium used in the weaponry that ended World War II.
L. A. Lawrence, D. C. Hata, D. F. Washburn
Nuclear Technology | Volume 41 | Number 1 | November 1978 | Pages 60-70
Technical Paper | Fuel | doi.org/10.13182/NT78-A32133
Articles are hosted by Taylor and Francis Online.
Significant actinide redistribution was observed in the outer low-temperature region of uranium-plutonium mixed-oxide fuel Data from the large number of fuel pins examined indicated boundaries within which redistribution in the outer low-temperature regions of the fuel occurred. Plutonium redistribution was not observed in fuel pins with an initial fuel oxygen-to-metal ratio (O/M) of >1.98 or in fuel irradiated to burnups of <5.0 at.%. Fuel pins with an initial O/M ratio of 1.96 exhibited plutonium enrichments on the fuel outer periphery at a burnup of ≥5.0 at.%. At ∼6.5 at.% burnup, a transition in character of the actinide distribution occurred, resulting in plutonium enrichments in the equiaxed grain region and uranium enrichments on the outer periphery of the fuel. Increasing the fuel initial O/M to 1.97 decreased the burnup at which plutonium enrichment occurred near the equiaxed grain region from 6.5 to 5.0 at.%. Conversely, decreasing the initial O/M ratio from 1.96 to 1.95 increased the burnup at which plutonium enrichment occurred in the equiaxed grain region from ∼6.5 to ∼7.5 at.%.