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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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Latest News
Can hydrogen be the transportation fuel in an otherwise nuclear economy?
Let’s face it: The global economy should be powered primarily by nuclear power. And it probably will by the end of this century, with a still-significant assist from renewables and hydro. Once nuclear systems are dominant, the costs come down to where gas is now; and when carbon emissions are reduced to a small portion of their present state, it will become obvious that most other sources are only good in niche settings. I mean, why use small modular reactors to load-follow when they can just produce that power instead of buffering it?
B. Curwen, L. H. Franklin
Fusion Science and Technology | Volume 4 | Number 2 | September 1983 | Pages 1373-1377
Magnet Engineering | doi.org/10.13182/FST83-A23048
Articles are hosted by Taylor and Francis Online.
The Ohmically Heated Toroidal Experiment (OHTE) is a toroidal pinch magnetic confinement plasma experiment which has been operating at GA Technologies (GA) since February 1981. In its original form, plasma current was induced by an air core induction or ohmic heating coil driven by a capacitor bank. Preliminary study revealed that greater plasma currents and pulse lengths could be achieved more economically by converting to an iron core rather than by installing additional capacitors. Therefore an iron core with a 3 volt-second capability and a stepped configuration was designed, fabricated and incorporated into the OHTE experimental device as part of a planned upgrade. To facilitate handling and installation, the iron core was fabricated in 28 segments consisting of 14 lower and 14 identical upper segments. Space limitations in the center of the machine created by existing geometry limited the flux path to approximately 1.28 m diameter or 1.296 m2. Using a stacking factor of 90% and allowing 3 mm between segments results in a true iron cross section of 1.12 m2. Each segment was fabricated by continuously winding in a “clockspring fashion” around a hardwood former Armco electrically oriented steel, 0.35 mm thick and 88 mm wide. Interspaced between laminations is insulating paper 0.02 mm thick and 88 mm wide bonded to the steel using a structural epoxy adhesive continuously applied during winding. After winding and curing, support saddles consisting of hardwood and aluminum were bonded to the segments. The segments were then cut into two identical halves on a large vertical milling machine. To eliminate electrical shorts, all machined surfaces were etched with a dilute nitric acid solution, then painted with a moisture repelling high dielectric strength epoxy spray paint to eliminate lamination to lamination creepage and surface corrosion.