ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
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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.
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
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.
Yi-Chiang Chang, Alexander Sesonske
Nuclear Technology | Volume 65 | Number 2 | May 1984 | Pages 292-304
Technical Paper | Fuel Cycle | doi.org/10.13182/NT84-A33412
Articles are hosted by Taylor and Francis Online.
Low-leakage extended burnup fuel management is a promising pressurized water reactor (PWR) improvement that yields better neutron economy than the traditional out-in fuel management scheme with resulting economic savings and a likely reduction in vessel fast neutron fluence. The Commonwealth Edison Zion-1 reactor was selected as representative of current operating PWRs and analyzed. A major objective was to develop and analyze optimum transition loading arrangements leading from present out-in management to the desired low-leakage scheme. A so-called “wet” burnable poison was used in the calcula-tional model, which was based on various Electric Power Research Institute/Advanced Recycle Methodology Program modules. An accelerated direct search scheme was developed to optimize the loading pattern utilizing the initial boron concentration as the objective function, which would correspond to a maximum cycle length for a given number of loaded fresh assemblies. The equilibrium cycle, with 32 of 48 fresh assemblies loaded in the core interior, resulted in a 6.4% saving in fuel cycle costs compared with a three-batch out-in strategy, and a 3.8% saving compared with a four-batch out-in strategy. Therefore, the low-leakage option is a promising improvement and detailed design is justified.