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Division Spotlight
Nuclear Installations Safety
Devoted specifically to the safety of nuclear installations and the health and safety of the public, this division seeks a better understanding of the role of safety in the design, construction and operation of nuclear installation facilities. The division also promotes engineering and scientific technology advancement associated with the safety of such facilities.
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.”
M. Hélie, Cl. Desgranges, St. Perrin
Nuclear Technology | Volume 155 | Number 2 | August 2006 | Pages 120-132
Technical Paper | Materials | doi.org/10.13182/NT06-A3751
Articles are hosted by Taylor and Francis Online.
In the framework of a law voted in 1991, it has been decided that the management of French high-level nuclear waste (HLW) should be studied along three main lines: (a) transmutation of actinides in fast breeder reactors, (b) long-term interim storage of waste containers (whether containing vitrified waste or spent fuel elements canisters) for a maximum period of 300 yr, and (c) geological disposal of the containers after the interim storage period.The last two lines of research, among other problems, bring up the question of the long-term corrosion behavior of the containers. The Commissariat à l'Énergie Atomique (CEA) is in charge of the researches concerning the transmutation of the actinides and the long-term interim storage.As interim storage is concerned, extended studies are being carried out at the CEA in order to predict the environmental conditions of an interim storage facility and the consequent corrosion of the HLW containers over a period of 300 yr.A dry corrosion phase of a minimum duration of 100 yr was identified, followed by an atmospheric corrosion phase of a maximum duration of 200 yr. Phenomenological models were developed to obtain an estimate of the total corrosion damage during interim storage.Results led to a conservative estimate of a corroded thickness of metal comprised between 0.35 and 1 mm, hence, <2% of the wall thickness of the overpacks.Because of the extended period of time considered, this estimate, partly based on the extrapolation of experimental results, has to be reinforced. Mechanistic modeling of the elementary processes is currently in progress and has already given encouraging results for both the dry and atmospheric corrosion phases.