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Division Spotlight
Decommissioning & Environmental Sciences
The mission of the Decommissioning and Environmental Sciences (DES) Division is to promote the development and use of those skills and technologies associated with the use of nuclear energy and the optimal management and stewardship of the environment, sustainable development, decommissioning, remediation, reutilization, and long-term surveillance and maintenance of nuclear-related installations, and sites. The target audience for this effort is the membership of the Division, the Society, and the public at large.
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.”
Mingjun Wang, Tangtao Feng, Ping Song, Wenxi Tian, G. H. Su, Suizheng Qiu (Xi’an Jiaotong Univ)
Proceedings | Advances in Thermal Hydraulics 2018 | Orlando, FL, November 11-15, 2018 | Pages 965-976
In this paper, the detailed thermal mixing characteristics of the two-phase stratified flow in a 45° T-junction were studied with complicated direct contact condensation. The feasibility of CFD model on the two phase mixing process was validated against the experimental data obtained from the XJTU-ECCS apparatus. Results show that the established two-phase CFD model can predict the mixing process correctly during the ECC safety injection with the matched grid, exact boundary conditions and a proper set of mathematical model. Moreover, with a comparison between the condensation rate and the experimental data under different Rt numbers, it was found that the error range of numerical results turned out to be lower than 28%. The condensation rate during the ECC injection was closely related to the Rt number, and the linearity degree between the condensation rate and Rt number was high when the cooling capacity of injection coolant was insufficient. This study summarized a fitting correlation according to simulation results, which can be used to predict the condensation rate in case that the Rt number is lower than 0.55.