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Division Spotlight
Reactor Physics
The division's objectives are to promote the advancement of knowledge and understanding of the fundamental physical phenomena characterizing nuclear reactors and other nuclear systems. The division encourages research and disseminates information through meetings and publications. Areas of technical interest include nuclear data, particle interactions and transport, reactor and nuclear systems analysis, methods, design, validation and operating experience and standards. The Wigner Award heads the awards program.
Meeting Spotlight
Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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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August 2024
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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.”
Inyong Kwon, Chang Hwoi Kim (KAERI), Gyuseong Cho (KAIST)
Proceedings | Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technolgies (NPIC&HMIT 2019) | Orlando, FL, February 9-14, 2019 | Pages 1795-1802
This paper describes a radiation sensor network system that can remotely monitor accidental area covered by high radiation in nuclear facilities. Each radiation sensor node is designed with radiation detector, radiation hardened readout circuit, microcontroller, and wireless communication module. In this paper, we will discuss sensor and circuit design configurations as well as initial radiation test results of a commercial wireless sensor module to verify how it works with the increase of irradiation doses. The measured data will be used to design a radiation hardened wireless communication system that can provide the most important information of monitoring radiation dose in accident nuclear sites where they are leaked in unseen area to mitigate such a severe accident situation in the very early stage. According to the initial measured result, the power consumption of some wireless modules were increased around 5.5 kGy and the others were increased around 7.2 kGy depending on various control factors while a module of PER was started to decrease around 1 kGy. The tests were performed with various configurations such as distance, frequency, transmitting power, and shielding material at the gamma irradiation facility containing cobalt 60 ? ray with high level activity of 490 kCi in KAERI. The measured data would be useful for researchers not only to find weak parts of the wireless module but also come up with radiation hardening methodologies for a common digital communication system. At the conference, more analyzed and collected data will be shared to discuss which part of the wireless communication system is weak and should be radiation hardened for exploiting specific applications, for example, severe accident monitoring system and unmanned system for nuclear decommissioning.