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Division Spotlight
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.
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.”
Shengyao Ding, Kun Xu, Xiaojian Huang, Zheng Wang
Nuclear Technology | Volume 155 | Number 3 | September 2006 | Pages 350-357
Technical Paper | Nuclear Plant Operations and Control | doi.org/10.13182/NT06-A3767
Articles are hosted by Taylor and Francis Online.
This paper describes a new system for monitoring leaks in a steam generator. The new system extends the traditional 16N monitor to detect both the rate and the location of a leak. Because the transit time is different for radioactive 16N and 19O to travel from the reactor core via the hot bottom side, cold bottom side, or bend region of the U-tube in a steam generator to the gamma-ray detector, the new system uses the different transit times to identify the location of leaks. Specifically, the ratio S0 of 16N to 19O activities in the reactor core of a swimming pool reactor was calculated by combining the cross sections np(E) and n(E) with the neutron spectra n(E). The ratio S1 of 16N to 19O activities in the measurement room was also calculated and measured by the high-purity germanium and NaI(Tl) detectors. The result of the calculation agrees with the measurement within an acceptable range.