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NCSD provides communication among nuclear criticality safety professionals through the development of standards, the evolution of training methods and materials, the presentation of technical data and procedures, and the creation of specialty publications. In these ways, the division furthers the exchange of technical information on nuclear criticality safety with the ultimate goal of promoting the safe handling of fissionable materials outside reactors.
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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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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.
Richard G. Bock, John D. Duncan, James E. Leonard
Nuclear Technology | Volume 11 | Number 4 | August 1971 | Pages 532-543
Technical Paper | Symposium on Fuel Rod Failure and Its Effect / Fuel | doi.org/10.13182/NT71-A30850
Articles are hosted by Taylor and Francis Online.
The first full-length, electrically heated, 49-rod, Zircaloy-clad simulated BWR fuel bundle with internally pressurized rods was spray cooled under loss-of-coolant conditions. The heater rods were internally pressurized with argon to simulate fission product gas inventory. Many perforations and severe rod distortions occurred near the center of the bundle. Nevertheless, spray cooling, initiated at a maximum cladding temperature of 1920°F, was effective in limiting cladding temperatures to ≈2250°F. Electrical failure of 10 heater rods complicated interpretation of the results, and it is estimated that the maximum temperature would have been ≈2360°F had the failures not occurred. The maximum coolant flow area reduction around a single rod caused by local perforations was 50%. However, this flow area reduction did not appreciably impair the effectiveness of the spray cooling system. That is, analysis performed using current General Electric (GE) loss-of-coolant technique s and heat transfer coefficients derived from stainless-steel-clad bundle tests predicted the maximum cladding temperature to within 20°F.