ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Division Spotlight
Fuel Cycle & Waste Management
Devoted to all aspects of the nuclear fuel cycle including waste management, worldwide. Division specific areas of interest and involvement include uranium conversion and enrichment; fuel fabrication, management (in-core and ex-core) and recycle; transportation; safeguards; high-level, low-level and mixed waste management and disposal; public policy and program management; decontamination and decommissioning environmental restoration; and excess weapons materials disposition.
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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Jun 2024
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Nuclear Science and Engineering
August 2024
Nuclear Technology
July 2024
Fusion Science and Technology
Latest News
NRC engineers share their expertise at the University of Puerto Rico
Robert Roche-Rivera and Marcos Rolón-Acevedo are licensed professional engineers who work at the U.S. Nuclear Regulatory Commission. They are also alumni of the University of Puerto Rico–Mayagüez (UPRM) and have been sharing their knowledge and experience with students at their alma mater since last year, serving as adjunct professors in the university’s Department of Mechanical Engineering. During the 2023–2024 school year, they each taught two courses: Fundamentals of Nuclear Science and Engineering, and Nuclear Power Plant Engineering.
Soon K. Lee, Maolong Liu, Nicholas R. Brown, Kurt A. Terrani, Youho Lee
Nuclear Technology | Volume 206 | Number 2 | February 2020 | Pages 339-346
Technical Paper | doi.org/10.1080/00295450.2019.1670010
Articles are hosted by Taylor and Francis Online.
Steady-state internal flow boiling experiments were conducted on various materials, including accident tolerant fuel cladding material Fe–12Cr–6Al (C26M2) alloy, Zircaloy, and metal-based materials, at atmospheric pressure (84 kPa), 10°C inlet subcooling, and 200 kg/m2‧s mass flow entering the test tubes until critical heat flux (CHF) was reached. The clad thickness effects on flow boiling CHF were evaluated showing a negative relation between CHF and clad thickness up to 0.711 mm. An approach was established to mechanistically understand the measured CHF differences among the tested materials using thermal effusivity, activity, diffusivity, and surface thermal economy. No clear relations were observed within the range of thermal properties of the tested materials. Compared to past CHF data for a mass flux of 300 kg/m2‧s, the CHF data for 200 kg/m2‧s showed increased relative differences among materials. This result implies that higher mass flux may further decrease apparent material sensitivity to CHF.