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Division Spotlight
Nuclear Criticality Safety
NCSD provides communication among nuclear criticality safety professionals through the development of standards, the evolution of training methods and materials, the presentation of technical data and procedures, and the creation of specialty publications. In these ways, the division furthers the exchange of technical information on nuclear criticality safety with the ultimate goal of promoting the safe handling of fissionable materials outside reactors.
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.”
S. Goldfarb, W. Ponton
Fusion Science and Technology | Volume 8 | Number 1 | July 1985 | Pages 1265-1268
Impurity Control and Vacuum Technology | Proceedings of the Sixth Topical Meeting on the Technology of Fusion Energy (San Francisco, California, March 3-7, 1985) | doi.org/10.13182/FST85-A39941
Articles are hosted by Taylor and Francis Online.
A system was designed and installed on the Tokamak Fusion Test Reactor (TFTR) to monitor temperatures and to control electrical heaters for 150 °C bakeout. This system, an adjunct to the hot air vacuum vessel heating system, is used for heating vacuum vessel port covers, neutral beam ducts, and diagnostic vacuum enclosures contiguous with the main vacuum vessel. The control scheme is based on an Allen-Bradley 2–30 Programmable Controller (PC) which acquires thermocouple data, calculates temperature differentials and provides proportional control of the heater power supplies. Temperature differentials between the vessel walls heated by hot air and the electrically heated portions are limited by the system to avoid excessive thermal stress as the machine temperature is raised expeditiously to bakeout level. The system prints out operating parameters and operates independent of the main TFTR control computer which is interconnected only for data display and archiving.