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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.
H.-G. Dillmann, H. Pasler, J. G. Wilhelm
Nuclear Technology | Volume 92 | Number 1 | October 1990 | Pages 40-49
Technical Paper | Development of Nuclear Gas Cleaning and Filtering Techniques / Nuclear Safety | doi.org/10.13182/NT90-A34485
Articles are hosted by Taylor and Francis Online.
Light water reactors in the Federal Republic of Germany are being retrofitted with venting filters for use after serious reactor accidents. Deep-bed stainless steel fiber filters remove droplets and particles as well as high-efficiency particulate air filters. The deep-bed stainless steel fiber filters consist of two layers of fleece. The fiber diameter decreases gradually from 30 to 2 µm in the direction of flow. In addition to its high removal efficiency, its resistance to extreme loads, and its high dust loading capacity, the filter is important because it completely separates droplets. Even after 130 h of spraying with fine (2- to 5-µm-diam) droplets, a maximum increase in differential pressure of only 3 mbars was measured. No penetrating water was detected on the downstream side. Even at a flow of more than twice the recommended rate, the removal efficiency only dropped from ≥99.99 to ∼99.95%. An iodine filter can also be installed in each of the venting filters. Iodine experiments were conducted to determine the design of the iodine filter. The data obtained in experimental work using special silver zeolites are reported.
