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Division Spotlight
Operations & Power
Members focus on the dissemination of knowledge and information in the area of power reactors with particular application to the production of electric power and process heat. The division sponsors meetings on the coverage of applied nuclear science and engineering as related to power plants, non-power reactors, and other nuclear facilities. It encourages and assists with the dissemination of knowledge pertinent to the safe and efficient operation of nuclear facilities through professional staff development, information exchange, and supporting the generation of viable solutions to current issues.
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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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.
Ronald J. Lipinski, John E. Gronager, Michel Schwarz
Nuclear Technology | Volume 58 | Number 3 | September 1982 | Pages 369-378
Technical Paper | Fission Reactor | doi.org/10.13182/NT82-A32972
Articles are hosted by Taylor and Francis Online.
Received November 3, 1981 Accepted for Publication Feburary 24, 1982 The results of a fission-heated sodium-U02 particle bed heat removal experiment (D-4) are presented and the effects of cooling the overlying sodium below saturation are discussed. Single-phase convection began at a Rayleigh number an order of magnitude smaller than for water. Bed disturbances were observed to occur at the onset of boiling, but only after a previous boiling cycle. The disturbances are believed to be due to the flashing of superheated liquid sodium after noncondensable gases had been removed during a previous boiling cycle. The start of bed dryout was observed with two different overlying sodium temperatures (300 and 600°C). The dryout power was 0.77 kW/kg with 300°C overlying sodium (and 29 kPa pressure) and 3.58 kW/kg with 600°C sodium (and 43 kPa). It is believed that cold overlying sodium reduces the large heat-removal capability of shallow beds by causing vapor condensation within the bed and suppressing channel formation. Steady-state temperatures above the boiling temperature were observed at the bed bottom for several power levels above the incipient dryout power, indicating stable dry zones.