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Division Spotlight
Operations & Power
Members focus on the dissemination of knowledge and information in the area of power reactors with particular application to the production of electric power and process heat. The division sponsors meetings on the coverage of applied nuclear science and engineering as related to power plants, non-power reactors, and other nuclear facilities. It encourages and assists with the dissemination of knowledge pertinent to the safe and efficient operation of nuclear facilities through professional staff development, information exchange, and supporting the generation of viable solutions to current issues.
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!
Latest Magazine Issues
Jul 2024
Jan 2024
Latest Journal Issues
Nuclear Science and Engineering
August 2024
Nuclear Technology
Fusion Science and Technology
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.”
Alexander Heifetz, Xin Huang, Roberto Ponciroli, Sasan Bakhtiari, Richard Vilim (ANL), Jafar Saniie (IIT)
Proceedings | Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technolgies (NPIC&HMIT 2019) | Orlando, FL, February 9-14, 2019 | Pages 49-58
Transmission of information using elastic waves on existing metallic pipes provides an alternative communication option for a nuclear facility. The advantages of this approach consist of transmitting information through barriers, such as the containment building wall, and providing an option for nuclear facility physical cybersecurity. Ultrasonic carrier frequency elastic shear waves confined to a metallic pipe create a communication channel which is difficult to eavesdrop on without direct physical contact. Compared electric or fiber optic cables, the communication channel consisting of a thick nuclear-grade stainless steel pipe is resilient to physical damage, such as channel severing. In this paper, we discuss acoustic communication system design considerations, including data transmission requirements for a nuclear facility and transducer operating conditions. A viable candidate for acoustic communication channel is a chemical volume control system (CVCS) stainless steel pipe, which penetrates through the containment building wall. A laboratory bench-scale system consisting of a nuclear grade CVCS-like pipe and ultrasonic transducers was assembled for a preliminary communication system analysis. Because of low bandwidth and spectral dispersion of ultrasonic transducers, on off keying (OOK) protocol was chosen for data communication. Laboratory tests have shown the acoustic communication system to be resilient to low frequency noise, such as process noise at a nuclear facility. Amplitude shift keying (ASK) communication protocol was developed using GNURadio software environment, and demonstration of data transmission was performed using piezo-electric (PZT) and electromagnetic acoustic (EMAT) transducers. Main achievements thus far include demonstration of transmission of sound and text files with PZT and EMAT across six-foot long nuclear grade stainless steel pipe, and demonstration of image transmission with PZT over the pipe. In the former example, 32KB image was transmitted at 2Kb/s bitrate. Efforts are currently under way to further enhance data transmission rate.