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Division Spotlight
Isotopes & Radiation
Members are devoted to applying nuclear science and engineering technologies involving isotopes, radiation applications, and associated equipment in scientific research, development, and industrial processes. Their interests lie primarily in education, industrial uses, biology, medicine, and health physics. Division committees include Analytical Applications of Isotopes and Radiation, Biology and Medicine, Radiation Applications, Radiation Sources and Detection, and Thermal Power Sources.
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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.”
Michitsugu Mori
Nuclear Technology | Volume 121 | Number 3 | March 1998 | Pages 245-259
Technical Paper | RETRAN | doi.org/10.13182/NT98-A2837
Articles are hosted by Taylor and Francis Online.
Verification and validation analyses of the RETRAN-03 code have been conducted by simulating the startup tests of a BWR-5 plant with the measured data from the 1100-MW(electric) boiling water reactor (BWR) of Tokyo Electric Power Company's nuclear power station. The comparison of results calculated by RETRAN-03 to BWR-5 measured data shows good agreement in tests changing reactor pressure and water-level setpoints and in primary-loop-recirculation (PLR) pump trip, main steam isolation valve (MSIV) closure, and generator load rejection tests. The calculated water level behavior could be well tracked with BWR-5 data. The effect of initial mixed-water level in a separator on the prediction of reactor water level was examined. Sensitivity analyses for the four- and the five-equation models were performed for a one-PLR-pump trip test, an all-MSIV closure test, and a generator load rejection test with 100% bypass. Such mild transients as startup tests show no distinct difference between the four- and the five-equation models. The various kinds of simulation with the start-up phase tests in changing pressure, water level, and power by transient could verify the RETRAN-03 model and validate the code.