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Conference Spotlight
2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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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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Latest News
NNSA awards BWXT $1.5B defense fuels contract
The Department of Energy’s National Nuclear Security Administration has awarded BWX Technologies a contract valued at $1.5 billion to build a Domestic Uranium Enrichment Centrifuge Experiment (DUECE) pilot plant in Tennessee in support of the administration’s efforts to build out a domestic supply of unobligated enriched uranium for defense-related nuclear fuel.
Y. Liao, S. Guentay, D. Suckow
Nuclear Technology | Volume 175 | Number 3 | September 2011 | Pages 510-519
Technical Paper | NURETH-13 Special / Thermal Hydraulics | doi.org/10.13182/NT11-A12502
Articles are hosted by Taylor and Francis Online.
The once-through mode of steam generator reflux condensation in the presence of noncondensable gases and/or aerosols in loss-of-coolant accident scenarios is introduced. The plausible severe accident scenarios associated with once-through reflux condensation are analyzed with MELCOR to demonstrate the background and safety significance of this phenomenon. An analytical model for once-through reflux condensation with noncondensables inside one single U-tube is developed using the heat and mass transfer analogy approach. The conditions for partial condensation inside the single U-tube can be determined with this model. The progress of modification to the ARTIST test facility to experimentally study the tube-to-tube nonuniform behavior of once-through reflux condensation inside a U-tube bundle is reported.