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Division Spotlight
Robotics & Remote Systems
The Mission of the Robotics and Remote Systems Division is to promote the development and application of immersive simulation, robotics, and remote systems for hazardous environments for the purpose of reducing hazardous exposure to individuals, reducing environmental hazards and reducing the cost of performing work.
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.”
Leah Spradley, Mark Abkowitz, James H. Clarke
Nuclear Technology | Volume 165 | Number 2 | February 2009 | Pages 209-222
Technical Paper | Radioactive Waste Management and Disposal | doi.org/10.13182/NT09-A4087
Articles are hosted by Taylor and Francis Online.
This paper describes the development and use of an integrated model to explore the impact of design parameters and operational decisions on storage and transportation aspects of the preclosure activity period for the potential repository at Yucca Mountain (YM), Nevada. The model provides an opportunity to perform analyses of various YM preclosure "scenarios." Storage and transportation aspects of the preclosure system are evaluated with the goal of identifying important design parameters and understanding system interactions, thereby providing a tool to recognize trade-offs and dependencies between storage demands at the waste generation sites and the repository.This application of the model explores changes in assumptions regarding the following parameters: (a) year the transportation, aging, and disposal (TAD) canister becomes available; (b) year that YM opens; (c) thermal limit for emplacement; (d) thermal limit for transportation; and (e) utility strategies for selecting assemblies for dry storage loading.The response variables measured are (a) dry storage containers loaded because of lack of capacity in the spent nuclear fuel pools, (b) TAD canisters that could potentially be loaded before YM opens (assuming utilities begin using the TAD canister as soon as it is commercially available), (c) pools from which shipments to YM originate each year, (d) years aboveground aging is required at YM, and (e) containers in the aging facility at YM each year.Results indicate that allowing utilities to trade allocations, prioritizing the trading based on least remaining capacity in the spent nuclear fuel pools, could reduce dry storage demands at the utility sites, decrease the number of pools making shipments each year, and increase the efficiency of the transportation system. This type of prioritization for allocations can provide these improvements without adversely impacting the required aboveground aging at YM in the case that younger fuel is sent first. Consequently, there may be incentive for utilities to negotiate the trading of allocations if they wish to reduce their expected dry storage demands after shipments commence to YM.