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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.
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ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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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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Colin Judge: Testing structural materials in Idaho’s newest hot cell facility
Idaho National Laboratory’s newest facility—the Sample Preparation Laboratory (SPL)—sits across the road from the Hot Fuel Examination Facility (HFEF), which started operating in 1975. SPL will host the first new hot cells at INL’s Materials and Fuels Complex (MFC) in 50 years, giving INL researchers and partners new flexibility to test the structural properties of irradiated materials fresh from the Advanced Test Reactor (ATR) or from a partner’s facility.
Materials meant to withstand extreme conditions in fission or fusion power plants must be tested under similar conditions and pushed past their breaking points so performance and limitations can be understood and improved. Once irradiated, materials samples can be cut down to size in SPL and packaged for testing in other facilities at INL or other national laboratories, commercial labs, or universities. But they can also be subjected to extreme thermal or corrosive conditions and mechanical testing right in SPL, explains Colin Judge, who, as INL’s division director for nuclear materials performance, oversees SPL and other facilities at the MFC.
SPL won’t go “hot” until January 2026, but Judge spoke with NN staff writer Susan Gallier about its capabilities as his team was moving instruments into the new facility.
Wim J. Soppe, Jan Prij
Nuclear Technology | Volume 107 | Number 3 | September 1994 | Pages 243-253
Technical Paper | Radioactive Waste Management | doi.org/10.13182/NT94-A35005
Articles are hosted by Taylor and Francis Online.
In many countries rock salt formations are candidates to host nuclear waste repositories. One of the aspects that needs careful consideration before such a repository can be put into operation is the formation of radiation damage in the salt. A model has been developed that provides a fundamental understanding of the buildup of radiation damage in NaCl. This model is based on kinetic rate reactions and takes into account the effect of impurities and the colloid nucleation stage on the growth of metallic sodium colloids. With this model, we have calculated the amounts of NaCl that can be converted into metallic sodium and molecular Cl2 for various options for repository design and intermediate storage times. It is shown that the concentrations of these defect aggregates, even very close to the high-level radioactive waste containers with steel walls 5 mm-thick, will be limited to a few mole percent.
