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Decommissioning & Environmental Sciences
The mission of the Decommissioning and Environmental Sciences (DES) Division is to promote the development and use of those skills and technologies associated with the use of nuclear energy and the optimal management and stewardship of the environment, sustainable development, decommissioning, remediation, reutilization, and long-term surveillance and maintenance of nuclear-related installations, and sites. The target audience for this effort is the membership of the Division, the Society, and the public at large.
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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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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.”
Koichi Asakura, Kentaro Takeuchi, Takayoshi Makino, Yoshiyuki Kato
Nuclear Technology | Volume 167 | Number 3 | September 2009 | Pages 348-361
Technical Paper | Fuel Cycle and Management | doi.org/10.13182/NT09-A9075
Articles are hosted by Taylor and Francis Online.
Technological feasibility of a simplified mixed-oxide (MOX) pellet fabrication process, the short process, was studied. About 300 g of microwave heating denitrated (MH)-MOX powder with adjusted plutonium content to 30% could be successfully processed by a tumbling granulator for subsequent pelletizing and sintering processes. The granulated 30%PuO2-MOX powder could be pressed into green annular pellets directly and smoothly when using a die wall lubrication method. The pellet tensile strengths were compared for a granulated molybdenum powder that has similar characteristics to those of granulated 30%PuO2-MOX powder, and they were higher for pellets obtained when using the die wall lubrication method than when using the conventional powder mixing method. The amount of additives in the green pellets could be controlled at a low value of 0.06 wt% in this process. It is, therefore, possible to carry out dewaxing and sintering of green pellets in the same furnace. By controlling the average particle sizes of granulated 30%PuO2-MOX powders, pellets with more than 95% theoretical density could be obtained after sintering at 1700°C for 2 h.As a result, it can be concluded that the short process is technologically feasible to fabricate MOX annular pellets.