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Division Spotlight
Thermal Hydraulics
The division provides a forum for focused technical dialogue on thermal hydraulic technology in the nuclear industry. Specifically, this will include heat transfer and fluid mechanics involved in the utilization of nuclear energy. It is intended to attract the highest quality of theoretical and experimental work to ANS, including research on basic phenomena and application to nuclear system design.
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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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.”
R.A. Surette, R.G.C. McElroy
Fusion Science and Technology | Volume 14 | Number 2 | September 1988 | Pages 1141-1146
Tritium Safety | doi.org/10.13182/FST88-1
Articles are hosted by Taylor and Francis Online.
This presentation describes some experiments to investigate the removal, regrowth and evolution of tritium from stainless steel planchets that had been exposed to elemental tritium. The total tritium sorbed onto and into a planchet was measured by heating the planchet and collecting the evolved tritium. The removable surface activity was determined from swipe measurements. The evolution of tritium from the planchets was determined by leaving some of the planchets exposed to air for almost one year and then measuring the tritium remaining. The swipe experiments indicate that a removal efficiency of 10% is representative but usually conservative for an undisturbed surface. In general, the fraction of activity that is removable is dependent on the surface history. If a cleaned surface is left undisturbed for a few days removable surface activity may regrow. If the surface is left undisturbed for a long period of time (months) some of the tritium in the planchet will be lost to the atmosphere.