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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.”
Isao Murata, Shigeo Yoshida, Noriyuki Saito, Akito Takahashi
Fusion Science and Technology | Volume 34 | Number 3 | November 1998 | Pages 997-1001
Neutronics Experiments and Analysis (Poster Session) | doi.org/10.13182/FST98-A11963743
Articles are hosted by Taylor and Francis Online.
Secondary gamma-ray skyshine has been measured at an intense 14 MeV neutron source facility with a Hp-Ge detector used to investigate this mechanism. Many discrete gamma-rays due to (n, γ) reactions were observed in the spectrum. It was confirmed that in the evaluation of the secondary gamma-ray skyshine, a precise spectrum calculation down to thermal neutron is indispensable. On the other hand, there exists only a continuum spectrum up to 8 MeV with no discrete peaks in the real skyshine spectrum from the upper air. It was found that the continuum spectrum is composed of mainly Compton scattered gamma-rays. In the distance dependency measurement, the real skyshine contribution showed slow attenuation compared with the whole skyshine contribution. This means that with increasing distance from the facility the real skyshine contribution is gradually dominant, namely, it becomes more important in the skyshine evaluation.