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Division Spotlight
Thermal Hydraulics
The division provides a forum for focused technical dialogue on thermal hydraulic technology in the nuclear industry. Specifically, this will include heat transfer and fluid mechanics involved in the utilization of nuclear energy. It is intended to attract the highest quality of theoretical and experimental work to ANS, including research on basic phenomena and application to nuclear system design.
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ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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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General Kenneth Nichols and the Manhattan Project
Nichols
The Oak Ridger has published the latest in a series of articles about General Kenneth D. Nichols, the Manhattan Project, and the 1954 Atomic Energy Act. The series has been produced by Nichols’ grandniece Barbara Rogers Scollin and Oak Ridge (Tenn.) city historian David Ray Smith. Gen. Nichols (1907–2000) was the district engineer for the Manhattan Engineer District during the Manhattan Project.
As Smith and Scollin explain, Nichols “had supervision of the research and development connected with, and the design, construction, and operation of, all plants required to produce plutonium-239 and uranium-235, including the construction of the towns of Oak Ridge, Tennessee, and Richland, Washington. The responsibility of his position was massive as he oversaw a workforce of both military and civilian personnel of approximately 125,000; his Oak Ridge office became the center of the wartime atomic energy’s activities.”
James A. Smith, Vivek Agarwal, Ahmad Al Rashdan (INL)
Proceedings | Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technolgies (NPIC&HMIT 2019) | Orlando, FL, February 9-14, 2019 | Pages 1667-1671
Data analytics should be at the center of strategic maintenance decision making. The diversity and quality of data collected provides key intuition that drives effective decisions on complicated topics. Online condition monitoring is used to reduce time based preventive maintenance and to enable predictive maintenance. Effective interpretation of data leads to information that plant operators can turn into decisions and actions that improve operations and maintenance activities. Data analytics is the primary technique used to facilitate effective data interpretation that will generate revolutionary results. The starting point is the data. Patterns in the data are noted and observed. The patterns observed while the plant is operating under preset conditions define process states. These patterns are mathematically manipulated to highlight changes when process changes are detected. The methods that detect state changes usually rely on correlation algorithms. Statistics are used to determine if the changes in the patterns are real or caused by plant noise and uncertainty levels. Integrated tools are used to implement algorithms that form the data analytics process and automate the decision making. Operations research is necessary to understand the operational context of the data. Machine learning algorithms provide dynamic mathematical means that can understand the present state and predict the next state with a degree of certainty. It is this prediction and the associated prediction certainty that allows plant operators to make effective decisions. This paper will discuss the approach to build a roadmap that will migrate data analytic techniques into production facilities.