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Division Spotlight
Radiation Protection & Shielding
The Radiation Protection and Shielding Division is developing and promoting radiation protection and shielding aspects of nuclear science and technology — including interaction of nuclear radiation with materials and biological systems, instruments and techniques for the measurement of nuclear radiation fields, and radiation shield design and evaluation.
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.”
C. Kovesdi, J. Clark (INL)
Proceedings | Nuclear Plant Instrumentation, Control, and Human-Machine Interface Technolgies (NPIC&HMIT 2019) | Orlando, FL, February 9-14, 2019 | Pages 1631-1643
In the United States (U.S.) Department of Energy (DOE) Light Water Reactor Sustainability (LWRS) Plant Modernization pathway, the role of human factors engineering (HFE) continues to have an integral role in ensuring new advanced digital technologies that are part of the overall plant modernization strategy support optimized human-system performance and do not introduce new human failure modes. Regulatory guidance highlights human-system performance is a complex and multifaceted construct that requires a hierarchical set of measures including aspects of workload, situation awareness (SA), and task performance. Since workload, SA, and task difficulty are not directly observable, an accepted practice is to use subjective measures such as survey instrumentations. However, the time allotted for survey administration and post-scenario discussion during HFE activities can be significantly limited depending on operator availability and/or simulator availability. This paper explores the psychometrics of common survey instruments that measure workload, SA, and perceived task difficulty in nuclear power plant operator-in-the-loop studies with a goal of informing development of a consolidated survey instrument to reduce administration time. A set of exploratory analyses uncovered two principal components from the individual items combined from these surveys. A prototype survey instrument was thus developed as an early concept to illustrate how these two principals components could be expanded into a survey tool with fewer questions. A detailed discussion of the exploratory analyses and new prototype survey are discussed in this paper.