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Division Spotlight
Operations & Power
Members focus on the dissemination of knowledge and information in the area of power reactors with particular application to the production of electric power and process heat. The division sponsors meetings on the coverage of applied nuclear science and engineering as related to power plants, non-power reactors, and other nuclear facilities. It encourages and assists with the dissemination of knowledge pertinent to the safe and efficient operation of nuclear facilities through professional staff development, information exchange, and supporting the generation of viable solutions to current issues.
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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Nuclear Science and Engineering
August 2024
Nuclear Technology
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.”
Osman Yasar, Gregory A. Moses, Robert R. Peterson
Fusion Science and Technology | Volume 19 | Number 3 | May 1991 | Pages 669-672
Inertial Fusion | doi.org/10.13182/FST91-A29421
Articles are hosted by Taylor and Francis Online.
One method of propagating light ions from beam generating diodes to ICF targets in a fusion reactor is to use laser-guided plasma discharge channels to magnetically guide the ions. Earlier studies of different cavity gases (argon, nitrogen, helium) for the LIBRA reactor study indicated that the lower atomic number gases (helium) were most suitable for plasma channel formation. We found unacceptable channel expansion due to radiative transfer where the radiation transport was calculated with a multigroup diffusion computer code. A new set of simulations using a newly developed adaptive-grid radiation magnetohydrodynamics scheme with a multigroup discrete ordinates radiation transport method has led to lower absorption and emission by such thin plasmas. Application of the new scheme to LIBRA thus shows the feasibility of using argon and nitrogen as well for the channel plasma. Higher atomic number gases more strongly attenuate the x-rays coming from the target explosion. Also, by using an adaptive grid, the new scheme provides better accuracy and resolution where it is needed in the channel. The discharge current required to form the channel is found to be 70 kA as opposed to 100 kA predicted by earlier calculations. This will have the effect of reducing the required discharge voltage and thus will ease the problem of electrical breakdown between the channel and the target chamber wall.