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Reactor Physics
The division's objectives are to promote the advancement of knowledge and understanding of the fundamental physical phenomena characterizing nuclear reactors and other nuclear systems. The division encourages research and disseminates information through meetings and publications. Areas of technical interest include nuclear data, particle interactions and transport, reactor and nuclear systems analysis, methods, design, validation and operating experience and standards. The Wigner Award heads the awards program.
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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
BWXT will scout potential TRISO fuel production sites in Wyoming
BWX Technologies Inc. announced today that its Advanced Technologies subsidiary has signed a cooperation agreement with the state of Wyoming to evaluate locations and requirements for siting a potential new TRISO nuclear fuel fabrication facility in the state.
John T. Holmes, Grant O. Haroldsen
Nuclear Technology | Volume 21 | Number 3 | March 1974 | Pages 228-234
Technical Paper | Instrument | doi.org/10.13182/NT74-A31393
Articles are hosted by Taylor and Francis Online.
The Experimental Breeder Reactor-II (EBR-II) primary sodium system is equipped with continuous monitors for oxygen and hydrogen impurities in the sodium. The sensors of these monitors have been incorporated into a modularized system that was developed for nuclear reactor applications for sodium temperature and sodium flow-rate conditioning. The oxygen meter calibration is provided by periodic analysis of the oxygen in sodium by the vanadium-equilibration method. The hydrogen meter is a direct reading device and does not require on-line calibration. Typically, the impurity content of the sodium has been shown to be quite stable at 0.6- to 1.0-ppm oxygen and 0.06- to 0.08-ppm hydrogen. On-line carbon monitors are not presently in use at EBR-II. A single determination of the chemical activity carbon in sodium gave a result of 0.002 relative to graphite and is about the same value as measured in other “clean” stainless steel-sodium systems. Plans are being made to equip the EBR-II secondary system with ten hydrogen meters that will be used for detecting the onset of steam-to-sodium leaks such that corrective action can be taken before the leak enlarges and propagates to adjacent tubes.