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Division Spotlight
Radiation Protection & Shielding
The Radiation Protection and Shielding Division is developing and promoting radiation protection and shielding aspects of nuclear science and technology — including interaction of nuclear radiation with materials and biological systems, instruments and techniques for the measurement of nuclear radiation fields, and radiation shield design and evaluation.
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.”
Kei-Ichi Otoha, Shunsuke Uchida
Nuclear Technology | Volume 122 | Number 1 | April 1998 | Pages 72-82
Technical Paper | Reactor Operations and Control | doi.org/10.13182/NT98-A2852
Articles are hosted by Taylor and Francis Online.
From analyses of the isotopic contribution of radioactive contamination on major components around the main boiling water reactor turbine system and the isotopic distribution along the system, the following conclusions are drawn:1. Contamination, especially on components that are installed downstream of the low-pressure turbine, is caused by the drain of surplus reactor water into the main condenser.2. Contamination is from radioactive fission products and radioactive corrosion products that are carried with the main steam flow.To reduce radioactive contamination, it is most important to drain the hot water directly into the radwaste system. To reduce contamination from carryover radioactivity, it is essential to suppress the radioactivity in the reactor water. Preventing fuel defects and suppressing the radioactivity of crud in the reactor water can decrease contamination of the main turbine system and minimize the contaminated area, which lessens the possibility of internal exposure.