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Mathematics & Computation
Division members promote the advancement of mathematical and computational methods for solving problems arising in all disciplines encompassed by the Society. They place particular emphasis on numerical techniques for efficient computer applications to aid in the dissemination, integration, and proper use of computer codes, including preparation of computational benchmark and development of standards for computing practices, and to encourage the development on new computer codes and broaden their use.
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2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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
WIPP improves utility shaft safety, begins infrastructure project
Harrison Western Shaft Sinkers (HWSS), the company drilling a new utility shaft at the Department of Energy’s Waste Isolation Pilot Plant in New Mexico, has retained a safety culture expert following a near-miss accident in the shaft late last year. The safety expert will conduct monthly facilitated discussions with crews working on the shaft to reinforce expectations for identifying concerns regarding unsafe circumstances, according to a recent report by the Defense Nuclear Facilities Safety Board (DNFSB).
Arthur E. Ruggles
Nuclear Technology | Volume 164 | Number 3 | December 2008 | Pages 309-319
Technical Paper | Fission Reactors | doi.org/10.13182/NT08-A4029
Articles are hosted by Taylor and Francis Online.
Acoustic oscillations in nuclear steam supplies have caused structural vibration leading to plant modifications in both pressurized water reactor and boiling water reactor (BWR) systems. Power increases (i.e., uprates) in some BWR designs have resulted in acoustic oscillations in the steam supply that have caused fatigue failures in steam dryer assemblies. Standing waves in side branch lines are identified as one important acoustic source for waves in the main lines. The side branch standing waves are driven by vortex shedding across the branch opening. The side branch lines couple acoustically with standing waves in the main line, extending the range of physical behavior beyond that normally considered in the literature. There are many side branches mounted where there is flow in the main steam line, creating multiple acoustic sources, many of nearly the same frequency. These multiple sources cause time variation in the acoustic performance that may extend over many seconds, and these attributes must be considered during data acquisition, component load simulation, and stress simulation. Wet steam sound speed models appropriate to BWR steam supply conditions are also presented.