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2026 Annual Conference
May 31–June 3, 2026
Denver, CO|Sheraton Denver
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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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Modernizing I&C for operations and maintenance, one phase at a time
The two reactors at Dominion Energy’s Surry plant are among the oldest in the U.S. nuclear fleet. Yet when the plant celebrated its 50th anniversary in 2023, staff could raise a toast to the future. Surry was one of the first plants to file a subsequent license renewal (SLR) application, and in May 2021, it became official: the plant was licensed to operate for a full 80 years, extending its reactors’ lifespans into 2052 and 2053.
Jeffrey Willert, H. Park, William Taitano
Nuclear Science and Engineering | Volume 181 | Number 3 | November 2015 | Pages 342-350
Technical Paper | doi.org/10.13182/NSE15-16
Articles are hosted by Taylor and Francis Online.
In two recent publications, it was demonstrated that the nonlinear diffusion acceleration (NDA) algorithm, a moment-based accelerator, could be modified to accelerate the solution to neutron transport calculations with anisotropic scattering. It was demonstrated, however, that as the scattering became less isotropic, the performance of the algorithm degraded. Furthermore, it has been shown that Anderson acceleration (AA) could be used to speed up neutron transport and plasma physics calculations. In this paper, we combine these ideas to demonstrate that AA can be used to remedy the degraded performance of NDA when scattering is anisotropic. We describe each of the methods in detail and demonstrate the results on a series of fixed-source calculations and a pair of k-eigenvalue calculations.