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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
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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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.
G. E. Plummer
Nuclear Science and Engineering | Volume 31 | Number 2 | February 1968 | Pages 183-190
Technical Paper | doi.org/10.13182/NSE68-A18230
Articles are hosted by Taylor and Francis Online.
This experiment was designed to test the barrier and geometry attenuation factors for 60Co gamma rays developed from moments-method calculations by Spencer as given in National Bureau of Standards Monograph 42. A set of vertical, plane steel barriers was employed. Selection of the detector distance from a given barrier and the degree of collimation permitted exposures to be measured as a function of the solid angle subtended by a constant circular area on the barrier. The effective mass thickness of the barriers ranged from 0 to 73 lb/ft2 and the solid angle subtended at the detector varied from 0.2 to 5.5 sr. A uniform plane radiation field was simulated by a traveling 60Co source that was pumped through plastic tubing that covered a 100-ft semicircular area. Extrapolation of the experimental data gave estimates of the exposures to be expected from an infinitely extended field. The final results for a collimated detector, located behind a steel barrier, were normalized to the free-field exposure received by a detector located 3 ft above the extended field. The experimental values were compared to a family of curves based on calculated results. For all cases except those for relatively small solid angles, the agreement was within 20%.