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Division Spotlight
Thermal Hydraulics
The division provides a forum for focused technical dialogue on thermal hydraulic technology in the nuclear industry. Specifically, this will include heat transfer and fluid mechanics involved in the utilization of nuclear energy. It is intended to attract the highest quality of theoretical and experimental work to ANS, including research on basic phenomena and application to nuclear system design.
Meeting Spotlight
International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2025)
April 27–30, 2025
Denver, CO|The Westin Denver Downtown
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
TerraPower begins U.K. regulatory approval process
Seattle-based TerraPower signaled its interest this week in building its Natrium small modular reactor in the United Kingdom, the company announced.
TerraPower sent a letter to the U.K.’s Department for Energy Security and Net Zero, formally establishing its intention to enter the U.K. generic design assessment (GDA) process. This is TerraPower’s first step in deployment of its Natrium technology—a 345-MW sodium fast reactor coupled with a molten salt energy storage unit—on the international stage.
C. W. Hunter, R. L. Fish, J. J. Holmes
Nuclear Technology | Volume 27 | Number 3 | November 1975 | Pages 376-388
Department | Fuel | doi.org/10.13182/NT75-A24311
Articles are hosted by Taylor and Francis Online.
Internally pressurized specimens of unirradiated 20% cold-worked Type 316 stainless-steel cladding were rapidly heated and burst to determine mechanical behavior under various simulated reactor transient events. The tests were conducted at heating rates of 10 and 200 F°/sec. Failure temperatures from 500 to 2500°F were obtained, with the principal emphasis on the behavior above 1000°F. Failure temperatures increased with decreasing internal pressure while cladding ductility initially increased with increasing failure temperature, but above ∼2100°F the ductility decreased steadily with increasing temperature. The increase in ductility with increasing temperature was due to recovery and recrystallization of the cold-worked material, while the decrease above 2100°F resulted from grain growth. The diametral failure strains were between 0.5 to 1.0% at 1000°F. The maximum diametral failure strain values reached 8% for the 10 F°/sec ramp and 4% for the 200 F°/ sec ramp at the elevated temperatures.