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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.
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2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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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Fusion Science and Technology
Latest News
Retrieval of nuclear waste canisters from a borehole
Borehole disposal of spent nuclear fuel (SNF) and high-level waste (HLW) uses off-the-shelf directional drilling technology developed and commercialized by the oil and gas sectors. It is a technology that has been gaining traction in recent years in the nuclear industry. Disposal can be done in one or more boreholes (including an array) drilled into suitable sedimentary, igneous, or metamorphic host rocks. Waste is encapsulated in specialized corrosion-resistant canisters, which are placed end to end in disposal sections of relatively small-diameter boreholes that have been cased and fluid-filled. After emplacement, the vertical access hole is plugged and backfilled as an engineered barrier.
Masaru Takagi, Robert Cook, Richard Stephens, Jane Gibson, Sally Paguio
Fusion Science and Technology | Volume 38 | Number 1 | July 2000 | Pages 54-57
Technical Paper | Thirteenth Target Fabrication Specialists’ Meeting | doi.org/10.13182/FST00-A36116
Articles are hosted by Taylor and Francis Online.
Poly(α-methylstyrene) (PαMS) mandrel precursors (a PαMS containing fluorobenzene solution surrounding a water core) are suspended in a salt-containing water solution during curing. The salt is necessary to suppress the growth of water drops in the curing oil phase (resulting in vacuoles in the dried mandrel). However the use of salts in this manner results in a chemical potential difference between the inner pure water droplets and the outer bath. This results in a loss of water from the inner water phase, shrinking the mandrel as it cures and potentially wrinkling its surface. We have quantified the degree of mandrel shrinkage and expansion as a function of the difference in salt concentration. Expansion is not proportional to concentration difference. It does not appear that osmotically driven expansion removes wrinkles; the large wrinkle amplitudes were seen with all salt concentrations.