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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
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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NRC chair voices support for Philippines under 123 Agreement
Hanson
The United States is fully engaged in supporting the development and peaceful use of nuclear energy in the Philippines through its new 123 Agreement, Nuclear Regulatory Commission chair Christopher Hanson said during a visit to the nation last week.
“We’re going to see a real increase in the tempo of engagement from the U.S. on the nuclear safety aspects,” Hanson said during a media roundtable in Makati City.
New partnership: Hanson’s visit to the Philippines followed the entry into force on July 2 of the landmark civil nuclear cooperation agreement (known as a 123 Agreement) between Washington and Manila to utilize nuclear energy safely. It establishes the legal framework for significant nuclear cooperation with other countries—in areas such as technical exchanges, scientific research, and safeguards discussions—as long as the partner adheres to a set of strong nonproliferation requirements.
Olivier Conocar, Nicolas Douyere, Jean-Paul Glatz, Jérôme Lacquement, Rikard Malmbeck, Jérôme Serp
Nuclear Science and Engineering | Volume 153 | Number 3 | July 2006 | Pages 253-261
Technical Paper | doi.org/10.13182/NSE06-A2611
Articles are hosted by Taylor and Francis Online.
Thermodynamic calculations have shown that aluminum is the most promising metallic solvent or support for the separation of actinides (An) from lanthanides (Ln). In molten fluoride salt, the technique of reductive extraction is under development in which the separation is based on different distributions of An and Ln between the salt and metallic Al phases. In this process molten aluminum alloy acts as both a reductant and a solvent into which the actinides are selectively extracted. It was demonstrated that a one-stage reductive extraction process, using a concentrated solution, allows a recovery of more than 99.3% of Pu and Am. In addition excellent separation factors between Pu and Ln well above 103 were obtained. In molten chloride media similar separations are developed by constant current electrorefining between a metallic alloy fuel (U60Pu20-Zr10Am2Nd3.5Y0.5Ce0.5Gd0.5) and an Al solid cathode. In a series of demonstration experiments, almost 25 g of metallic fuel was reprocessed and actinides collected as An-Al alloys on the cathode. Analysis of the An-Al deposits confirmed that an excellent An/Ln separation (An/Ln mass ratio = 2400) had been obtained. These results show that Al is a very promising material to be used in pyrochemical reprocessing of actinides.