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Robotics & Remote Systems
The Mission of the Robotics and Remote Systems Division is to promote the development and application of immersive simulation, robotics, and remote systems for hazardous environments for the purpose of reducing hazardous exposure to individuals, reducing environmental hazards and reducing the cost of performing work.
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Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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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.”
Jorge J. Sanchez, Warren H. Giedt
Fusion Science and Technology | Volume 36 | Number 3 | November 1999 | Pages 346-355
Technical Paper | doi.org/10.13182/FST36-346
Articles are hosted by Taylor and Francis Online.
A study is conducted on cooling and controlling the thickness of a frozen layer of deuterium and tritium (D-T) on the inner surface of a capsule mounted in a cylindrical hohlraum. Cooling is required to remove the heat released during tritium decay. The layer thickness must be uniform, which requires that the heat flow from the layer into the capsule wall be spherically symmetric. It is shown that this requirement can be satisfied by controlling the temperature rise along the hohlraum wall from the ends to the midplane. The optimum temperature rise depends primarily on the D-T fuel charge and the thermal conductivity of the gas filling the hohlraum. To ensure a layer thickness variation of less than ±0.4 m in a plastic capsule, the temperature rise along the hohlraum wall must be controlled to an accuracy of about ±3.0 mK. However, as the thermal conductivity of the capsule wall increases to metallic material values, the required accuracy of the hohlraum wall temperature rise decreases to ±15 mK.