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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.
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Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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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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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.
James F. Davis, Richard S. H. Mah, William F. Stevens, Balabhadra Misra, Victor A. Maroni
Nuclear Technology | Volume 46 | Number 1 | November 1979 | Pages 149-158
Technical Paper | ISotopes Separation | doi.org/10.13182/NT79-A32387
Articles are hosted by Taylor and Francis Online.
A control scheme is proposed based on our analysis of the disturbances expected during normal operation of the lead column in the fuel enrichment distillation cascade for a near-term tokamak fusion reactor fuel cycle. The primary objective of this control scheme is to minimize both the time and the amount that the atom percent protium in the bottoms product is above a setpoint level. As a secondary objective, distillate stream flow and composition fluctuations should be minimized to avoid downstream operational and control problems without requiring intermediate storage. A fixed material balance control scheme was found to be satisfactory for meeting the control requirements of this system. Because the concentration of protium in the bottoms product (the controlled variable) was relatively small, the distillate stream composition and the tritium/deuterium ratio in the bottoms stream proved to be essentially independent of the choice of controller parameters. This insensitivity permitted the controller parameters to be chosen solely on the basis of the primary objective and led to a high gain setting and low reset value for the controller. With the provision of a bottoms storage to dampen out the effect of oscillatory response, these controller settings minimized the overshoot and produced an averaged protium concentration in the bottoms very close to the setpoint level