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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
2024 ANS Winter Conference and Expo
November 17–21, 2024
Orlando, FL|Renaissance Orlando at SeaWorld
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
New laws offer nuclear industry incentives for existing power plant uprates
This year, the U.S. nuclear industry received a much-needed economic boost that could help preserve operating nuclear power plants and incentivize upgrades that extend their lifespan and power output.
Signed into law in 2022, the Inflation Reduction Act offers production tax credits (PTCs) for existing nuclear power plants and either PTCs or investment tax credits (ITCs) for new carbon-free generation. These credits could make power uprates—increasing the maximum power level at which a commercial plant may operate—a much more appealing option for utilities.
L. E. Strawbridge, R. F. Barry
Nuclear Science and Engineering | Volume 23 | Number 1 | September 1965 | Pages 58-73
Technical Paper | doi.org/10.13182/NSE65-A19259
Articles are hosted by Taylor and Francis Online.
A procedure for calculating the neutron multiplication factor and few-group constants for water-moderated reactors has been developed. The intent of this development was to produce a calculational procedure which could be used with confidence in the engineering design of water-moderated reactors. Analytic procedures that require large amounts of computer time were excluded from consideration. The proposed procedure includes a heterogeneous treatment of the fast-fission effect, resonance absorptions and the thermal utilization. The results of the procedure agree well with more rigorous calculations requiring orders of magnitude more computer time. The procedures have been applied to 116 U-metal and UO2 experimental lattices covering a wide range of parameters. The multiplication factor is calculated for all cases with a standard deviation about the mean of 0.86%.
