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Division Spotlight
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.
Meeting Spotlight
International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2025)
April 27–30, 2025
Denver, CO|The Westin Denver Downtown
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
TerraPower begins U.K. regulatory approval process
Seattle-based TerraPower signaled its interest this week in building its Natrium small modular reactor in the United Kingdom, the company announced.
TerraPower sent a letter to the U.K.’s Department for Energy Security and Net Zero, formally establishing its intention to enter the U.K. generic design assessment (GDA) process. This is TerraPower’s first step in deployment of its Natrium technology—a 345-MW sodium fast reactor coupled with a molten salt energy storage unit—on the international stage.
Shigeki Fukutomi, Norio Naito, Yoji Takizawa
Nuclear Technology | Volume 99 | Number 1 | July 1992 | Pages 120-132
Technical Paper | Reactor Operation | doi.org/10.13182/NT92-A34708
Articles are hosted by Taylor and Francis Online.
An integrated operator decision aid (IODA) system utilizing computers and cathode-ray tube (CRT) display devices has been developed by focusing attention on the importance of the operator’s role in a nuclear power plant. The developmental objective of this IODA is to improve safety, reliability, and the quality of nuclear power plant operation by helping operators handle abnormal plant conditions. Three support functions corresponding to the respective roles of operators are determined and developed: (a) a standby systems management function, (b) a disturbance analysis function for monitoring plant status and diagnosing disturbances, and (c) a posttrip operational guidance function for providing symptom-based operational guidance after a reactor scram. These functions have been integrated into an operator decision aid system for abnormal conditions in boiling water reactor (BWR) power plants. Information on plant diagnosis and guidance messages are provided through a three-level hierarchical structure of CRT display images. Results of functional verification tests of IODA using a BWR simulator show that the system effectively supports operators at all stages—from normal operation of the plant to safe plant shutdown after a reactor scram. The IODA can help operators quickly and easily understand a plant situation and take appropriate measures during abnormalities. It will also alleviate the burden on operators, thus reducing the potential for judgmental and operational errors in various plant operating modes.
