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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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Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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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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Latest News
Vogtle-3 shuts down for valve issue
One of the new Vogtle units in Georgia was shut down unexpectedly on Monday last week for a valve issue that has since been investigated and repaired. According to multiple local news outlets, Georgia Power reported on July 17 that Unit 3 was back in service.
Southern Company spokesperson Jacob Hawkins confirmed that Vogtle-3 went off line at 9:25 p.m. local time on July 8 “due to lowering water levels in the steam generators caused by a valve issue on one of the three main feedwater pumps.”
Anastasios Mironidis, Leon Lidofsky, George Grochowski, Lefteris Tsoukalas
Nuclear Technology | Volume 127 | Number 2 | August 1999 | Pages 170-185
Technical Paper | Reactor Operations and Control | doi.org/10.13182/NT99-A2993
Articles are hosted by Taylor and Francis Online.
The problem of core damage severity evaluation during a core-threatening accident of a pressurized water reactor is addressed. An expert system, Core Damage Evaluator (CoDE), is developed that makes an adept utilization of the inferring capabilities of fuzzy logic to classify the core in the damage severity category: "intact," "clad failure," or "core melt" or a combination of the last two. If it is determined that some form of core damage exists, the logic model enters a quantification stage to provide a numerical assessment of the damage.The model is provided with two row vector inputs at a rate of 100 to 150 vector pairs per minute. The qualitative vector consists of 69 elements, whereas the quantitative one contains 83. These elements constitute instantaneous physical parameter values provided by the plant instrumentation. The inferencing procedure employed in this problem is the generalized modus ponens (GMP), which has its origin in the field of approximate reasoning.