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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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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.”
Sandro Sandri, Luigi Di Pace
Fusion Science and Technology | Volume 30 | Number 3 | December 1996 | Pages 1480-1484
Safety and Environment | doi.org/10.13182/FST96-A11963158
Articles are hosted by Taylor and Francis Online.
The Occupational Radiation Exposure (ORE) for the water primary cooling system (PCS) of the SEAFP (Safety and Environmental Assessment of Fusion Power) alternative plant model (APM) was assessed taking into account the first wall/ blanket section only.
All the potential radiological sources were considered and the analysis was restricted to the most important source at the PCS, the activated corrosion products (ACP). The neutrons have the capability to activate the materials under their flux and therefore also the inner surface of the in-vessel portion of the PCS undergo to such a process. Production, erosion/corrosion, transport and deposition of the ACP are the subject of a parallel work presented at the same meeting.
The ACP deposited on the inner surface of the PCS components are responsible for the personnel external irradiation. The relevant dose rate was evaluated by using the computer code MCNP and comparing the results with the respective values measured at the fission PWR plants. The comparison with the PWR made it possible to transfer the parameters relevant to the working activities to the SEAFP PCS. Maintenance and inspection were found to be the only working tasks applicable to the SEAFP circuit and the worker access was considered to be allowed 24 h after the plant shut down only.
The ORE figures are shown in the work for each working activity and are compared with those measured at the PWR similar circuit. The comparison showed a more acceptable result from the radiological safety point of view for the SEAFP staff.