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
Education, Training & Workforce Development
The Education, Training & Workforce Development Division provides communication among the academic, industrial, and governmental communities through the exchange of views and information on matters related to education, training and workforce development in nuclear and radiological science, engineering, and technology. Industry leaders, education and training professionals, and interested students work together through Society-sponsored meetings and publications, to enrich their professional development, to educate the general public, and to advance nuclear and radiological science and engineering.
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.
B. M. Durst, S. R. Bierman, E. D. Clayton, J. F. Mincey
Nuclear Technology | Volume 48 | Number 2 | April 1980 | Pages 128-149
Technical Paper | Fuel | doi.org/10.13182/NT80-A32460
Articles are hosted by Taylor and Francis Online.
A series of experiments was performed at the Batelle-Pacific Northwest Laboratories on water-flooded arrays of Fast Test Reactor fuel elements (PUO2-UO2) intermixed with solid neutron absorbers. The objective of these experiments was to provide reliable experiment data that could be used to benchmark computer codes and calculational schemes commonly used in criticality analysis of such systems. The neutron absorbers used were cadmium and Boral plates and gadolinium cylindrical rods. Critical array sizes were determined for square lattice pitches ranging from 9.7 to 24.9 mm, corresponding to water-to-fuel volume ratios of 3.5 to ∼31 (hydrogen atom to fissile atom ratios of 58 to 473). For both systems, poisoned and unpoisoned, the minimum number of rods required for criticality occurred at a lattice pitch of ∼20.5 mm, which also corresponds to a water-to-fuel volume ratio of 20.5. The smallest critical number of rods for the unpoisoned array was 157. Boral was the most effective absorber, irrespective of degree of moderation or its position in the assembly. However, all three absorbers varied in degree of effectiveness with moderation.