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Fusion Energy
This division promotes the development and timely introduction of fusion energy as a sustainable energy source with favorable economic, environmental, and safety attributes. The division cooperates with other organizations on common issues of multidisciplinary fusion science and technology, conducts professional meetings, and disseminates technical information in support of these goals. Members focus on the assessment and resolution of critical developmental issues for practical fusion energy applications.
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2024 ANS Winter Conference and Expo
November 17–21, 2024
Orlando, FL|Renaissance Orlando at SeaWorld
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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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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.
Arsalan Razani, H. E. Hungerford
Nuclear Science and Engineering | Volume 46 | Number 1 | October 1971 | Pages 1-11
Technical Paper | doi.org/10.13182/NSE71-A22330
Articles are hosted by Taylor and Francis Online.
This paper examines a new probabilistic formulation and development of a model for the investigation of three-dimensional gamma-ray transport problems. This model assumes that gamma-ray motion may be sampled at predetermined points. A medium is considered to be filled with a cubic lattice whose unit distance between lattice points may be some fraction of the mean-free-path. The random walk of gamma rays from one point to another is constructed using the lattice framework as reference points. Using this model, a new type of stochastic gamma-ray transport code, PUGT I (Purdue University Gamma Ray Transport I), has been developed based on direct simulation of physical transport process. In another version of the code (PUGT II), capture of gamma rays is taken into account analytically by associating a weight factor to the gamma rays. The codes are used to calculate the transmission and reflection characteristics of gamma rays for different thicknesses of slabs of aluminum and iron. The contribution of annihilation radiation to reflection and transmission is investigated. The results of our calculations are in good agreement with other similar calculations and with experimental results. Gamma-ray streaming through two-legged rectangular concrete ducts was investigated. Results of these studies are in very good agreement with experimental results and demonstrate the ability of the codes and the power of the lattice model to calculate quickly and efficiently the transmission of gamma rays in three-dimensional complex shielding geometries. The method is several times faster than ordinary Monte Carlo.