ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
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Division Spotlight
Nuclear Installations Safety
Devoted specifically to the safety of nuclear installations and the health and safety of the public, this division seeks a better understanding of the role of safety in the design, construction and operation of nuclear installation facilities. The division also promotes engineering and scientific technology advancement associated with the safety of such facilities.
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.
W. Joe Gist, Stanley R. Bull, C. Leon Partain
Nuclear Science and Engineering | Volume 57 | Number 2 | June 1975 | Pages 97-116
Technical Paper | doi.org/10.13182/NSE75-A27338
Articles are hosted by Taylor and Francis Online.
The kinetics of a flux-trap cylindrical reactor system were studied both theoretically and experimentally. A state-variable approach was used to develop a twenty-fourth-order model describing neutron and temperature kinetics in 14 regional system components. The modified Mikhailov method was used to determine the stability of the model. The reactor system was studied using step testing and pseudorandom multifrequency binary sequence testing procedures with a small-computer based instrumentation system. Measurements were made at powers of 1, 2.5, and 4 MW. The frequency response analysis of the system model compared favorably with experimental observations.