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Nuclear Criticality Safety
NCSD provides communication among nuclear criticality safety professionals through the development of standards, the evolution of training methods and materials, the presentation of technical data and procedures, and the creation of specialty publications. In these ways, the division furthers the exchange of technical information on nuclear criticality safety with the ultimate goal of promoting the safe handling of fissionable materials outside reactors.
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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
Argonne researching “climate-ready” nuclear plant design
Scientists at Argonne National Laboratory have partnered with Washington state–based Energy Northwest to look at alternative ways to cool nuclear reactors as climate change impacts relied-upon water sources.
Gee Yong Park, Jinho Park, Poong Hyun Seong
Nuclear Technology | Volume 145 | Number 2 | February 2004 | Pages 177-188
Technical Paper | Thermal Hydraulics | doi.org/10.13182/NT04-A3468
Articles are hosted by Taylor and Francis Online.
Information on the steam and feedwater flow rates in the secondary loop of nuclear power plants is valuable for thermal efficiency estimation and the related controllers in nuclear power plants. However, the high level of noise in measuring flow rates detracts from the usefulness of this information and forces the operator to exclude the values of the steam and feedwater flow rates when controlling the water level of a steam generator at low operating powers. In recent years, it has been proposed that the wavelet transform can reconstruct a signal that approximates very closely the original signal under a high level of noise. A possible way of differentiating the flow rate from noise is proposed by use of the wavelet noise-reduction or denoising technique and, as one of the potential applications for nuclear power plants, the wavelet transform is incorporated into the water-level controller of steam generators for successful control at low operating powers.