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Decommissioning & Environmental Sciences
The mission of the Decommissioning and Environmental Sciences (DES) Division is to promote the development and use of those skills and technologies associated with the use of nuclear energy and the optimal management and stewardship of the environment, sustainable development, decommissioning, remediation, reutilization, and long-term surveillance and maintenance of nuclear-related installations, and sites. The target audience for this effort is the membership of the Division, the Society, and the public at large.
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ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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
Discovering, Making, and Testing New Materials: SRNL’s Center For Hierarchical Waste Form Materials
Savannah River National Laboratory researchers are building on the laboratory’s legacy of using cutting-edge science to effectively immobilize nuclear waste in innovative ways. As part of the Center for Hierarchical Waste Form Materials, SRNL is leveraging its depth of experience in radiological waste management to explore new frontiers in the industry.
Yury A. Bezrukov, Sergey A. Logvinov, Vladimir N. Ul'yanovsky, Nikolay A. Strebnev
Nuclear Technology | Volume 146 | Number 2 | May 2004 | Pages 122-130
Technical Paper | Fission Reactors | doi.org/10.13182/NT04-A3492
Articles are hosted by Taylor and Francis Online.
In this paper, results of experimental studies of the coolant flow mixing at different boron concentration and different temperature in the VVER-1000 reactor downcomer and lower plenum are presented. Studies concerning boron dilution were carried out on the reactor model in scale 1:5 for cases of reactor coolant pump (RCP) startup and resumption of natural circulation during a small-break loss-of-coolant accident. It has been shown that for RCP startup, the effect of Reynolds number on mixing is negligible. Studies of flow mixing in the reactor downcomer were carried out applied to emergency core cooling system water injection into the cold loop leg and reactor downcomer. Results of the tests on model and reactor have been analyzed, and recommendations for calculations have been provided.
