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Young Members Group
The Young Members Group works to encourage and enable all young professional members to be actively involved in the efforts and endeavors of the Society at all levels (Professional Divisions, ANS Governance, Local Sections, etc.) as they transition from the role of a student to the role of a professional. It sponsors non-technical workshops and meetings that provide professional development and networking opportunities for young professionals, collaborates with other Divisions and Groups in developing technical and non-technical content for topical and national meetings, encourages its members to participate in the activities of the Groups and Divisions that are closely related to their professional interests as well as in their local sections, introduces young members to the rules and governance structure of the Society, and nominates young professionals for awards and leadership opportunities available to members.
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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.
T. Trombetti, D. L. Hetrick
Nuclear Science and Engineering | Volume 86 | Number 2 | February 1984 | Pages 129-135
Technical Paper | doi.org/10.13182/NSE84-A18195
Articles are hosted by Taylor and Francis Online.
A multinode treatment of the problem of nonlinear reactor stability is given. The nodal kinetics equations account for nodal powers, precursor concentrations, and temperatures. Nonlinear power-plus-temperature feedbacks are admitted in each node. Quadratic and logarithmic Lyapunov functions are considered. By formulating and solving a suitable nonlinear programming problem, the optimal estimate of the domain of attraction of the reactor-operating equilibrium state that can be afforded by the aforesaid V functions is explicitly constructed. An example of a reactor with two nodal power feedbacks (one destabilizing) and two destabilizing nodal temperature feedbacks is given. These feedbacks are seen to give rise to an unstable equilibrium reactor state, in the region of all-positive perturbations, which is extremely well approached by the boundary of the estimate of the domain of attraction.
