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Division Spotlight
Fusion Energy
This division promotes the development and timely introduction of fusion energy as a sustainable energy source with favorable economic, environmental, and safety attributes. The division cooperates with other organizations on common issues of multidisciplinary fusion science and technology, conducts professional meetings, and disseminates technical information in support of these goals. Members focus on the assessment and resolution of critical developmental issues for practical fusion energy applications.
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.”
Chantal Medri (NWMO), Glen Bird (GBird Environmental Ltd)
Proceedings | 16th International High-Level Radioactive Waste Management Conference (IHLRWM 2017) | Charlotte, NC, April 9-13, 2017 | Pages 113-120
The basis for assessing the potential postclosure radiological impacts of a deep geological repository on non-human biota has been evolving, particularly with the development of new data. The Nuclear Waste Management Organization (NWMO) has developed an updated model and dataset consistent with current international practice (Ref. 1). This paper describes the application of the updated non-human biota dose model, using as a basis the calculated environmental media concentration outputs from recent NWMO postclosure safety assessments for hypothetical crystalline and sedimentary rock sites (Ref. 2).
Two analysis cases were selected from each of the postclosure safety assessments - a Normal Evolution Scenario and a Disruptive Event Scenario. Results are generated using two methods of modelling the partitioning behavior of radionuclides - Concentration Ratios and Transfer Factors. The results are compared with two sets of criteria - Screening Criteria and Acceptance Criteria.
Conclusions are drawn for both hypothetical sites and these would need to be repeated for any real candidate site. However, the results illustrate the methodology, provide information on the nature and importance of the various pathways, and are consistent with prior conclusions that an appropriately sited deep geologic repository should have no long-term detrimental impact on biota populations around the site.