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Radiation Protection & Shielding
The Radiation Protection and Shielding Division is developing and promoting radiation protection and shielding aspects of nuclear science and technology — including interaction of nuclear radiation with materials and biological systems, instruments and techniques for the measurement of nuclear radiation fields, and radiation shield design and evaluation.
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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
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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
Argonne’s METL gears up to test more sodium fast reactor components
Argonne National Laboratory has successfully swapped out an aging cold trap in the sodium test loop called METL (Mechanisms Engineering Test Loop), the Department of Energy announced April 23. The upgrade is the first of its kind in the United States in more than 30 years, according to the DOE, and will help test components and operations for the sodium-cooled fast reactors being developed now.
Shekhar Kumar
Nuclear Technology | Volume 210 | Number 11 | November 2024 | Pages 2236-2243
Note | doi.org/10.1080/00295450.2024.2309069
Articles are hosted by Taylor and Francis Online.
Several empirical equations were available in the literature for density equation for tri-n-butyl phosphate (TBP)–bearing mixed organic solutions used in the PUREX/UREX process; however, all most all of the equations were found to have a limited range and a limited number of solutes to be handled. In this work, a robust density equation is proposed in a dimensionally consistent manner. In the proposed equation, TBP is also considered as a solute, rendering the proposed equation valid over a full range of TBP concentrations. The highlights of this technical note include1. Density equation for mixed organic solutions, containing TBP, n-dodecane, and nitrates of heavy metals, is proposed in a dimensionally consistent manner.2. TBP is also considered as a solute, rendering proposed equation valid over 0% to 100% of TBP concentrations.3. The proposed equation is valid for uranium concentrations 0 to 120 g/L in organic phase.4. With a small loss of precision, the same can be used for PUREX solvent loaded with Pu(IV).
1. Density equation for mixed organic solutions, containing TBP, n-dodecane, and nitrates of heavy metals, is proposed in a dimensionally consistent manner.
2. TBP is also considered as a solute, rendering proposed equation valid over 0% to 100% of TBP concentrations.
3. The proposed equation is valid for uranium concentrations 0 to 120 g/L in organic phase.
4. With a small loss of precision, the same can be used for PUREX solvent loaded with Pu(IV).
