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Division Spotlight
Robotics & Remote Systems
The Mission of the Robotics and Remote Systems Division is to promote the development and application of immersive simulation, robotics, and remote systems for hazardous environments for the purpose of reducing hazardous exposure to individuals, reducing environmental hazards and reducing the cost of performing work.
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.
D. R. Mathews, K. F. Hansen, and E. A. Mason
Nuclear Science and Engineering | Volume 27 | Number 2 | February 1967 | Pages 263-270
Technical Paper | doi.org/10.13182/NSE67-A18266
Articles are hosted by Taylor and Francis Online.
The method of invariant imbedding has been applied to neutron shielding problems in plane geometry with realistic energy and angle-dependent cross sections. The method seems to offer advantages over competing methods when the shield is heterogeneous and very thick or when the shield is composed of a very large number of different regions. Reflection and transmission equations are derived by the method of invariant imbedding and their numerical solution discussed. A simple exponential approximation is shown to work well for the solution of these equations. Results for several problems including a thick homogenous water shield and a thinner heterogeneous iron/polyethylene/iron shield are compared with results obtained by other methods.