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Division Spotlight
Human Factors, Instrumentation & Controls
Improving task performance, system reliability, system and personnel safety, efficiency, and effectiveness are the division's main objectives. Its major areas of interest include task design, procedures, training, instrument and control layout and placement, stress control, anthropometrics, psychological input, and motivation.
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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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.”
N. Tsuzuki, M. Chaki (The Inst of Applied Energy), D. T. Nguyen, Y. A. Hassan, K. Vierow Kirkland (Texas A&M)
Proceedings | Advances in Thermal Hydraulics 2018 | Orlando, FL, November 11-15, 2018 | Pages 160-169
Flow behavior of a jet issuing from a steam inlet nozzle of a Terry turbine, which is employed in the RCIC system of BWRs, was observed using PIV techniques. The nozzle has a complicated shape and sufficient data do not exist to predict flow phenomena including exhaust jet flow behavior. Single-phase air jet flow was applied for this experiment. The jet flows 10 mm from the nozzle then impinges on a flat wall which simulates the wall segment between buckets on a turbine wheel. The nozzle outlet pressure was set as 30 psi and 40 psi. Flow behavior and collision behavior was different between the two cases, which implies nozzle outlet pressure of Terry turbine also affects the flow behavior in the turbine. The flow behavior is very important to know how Terry turbine works in BDBE condition or to estimate actual life time of the RCIC system itself. This is the first trial to clarify the behavior and further work will be done in the future.