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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.
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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.
Dong H. Nguyen
Nuclear Science and Engineering | Volume 55 | Number 3 | November 1974 | Pages 307-319
Technical Paper | doi.org/10.13182/NSE74-A23457
Articles are hosted by Taylor and Francis Online.
Transient solutions of a nonlinear nuclear reactor with various temperature-dependent feedbacks are obtained by the modified Newton-Raphson-Kantorovich’s iterative technique. The difference between the first and higher iterates is shown explicitly to be negligible at all times, so that the first iterate represents well the entire solution. It is also shown that the spatial distribution of the neutron flux during transience is dominated by the fundamental mode and that the negligible difference between the second and the first iterates is composed of higher harmonics.—, The maximum flux, the time at which it occurs, and the rate of flux increase are all readily obtained from the solutions. For an increase in reactor buckling and for a positive initial flux disturbance, the neutron flux in a reactor with Newtonian or prompt feedback reaches a finite asymptotic value, whereas that of an adiabatic reactor first rises, then drops off. However, for the same initial conditions, the maximum flux attained in an adiabatic reactor is several fold higher than that of a reactor with Newtonian or prompt feedback.