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2025 ANS Winter Conference & Expo
November 9–12, 2025
Washington, DC|Washington Hilton
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The last days of Hallam
The Hallam nuclear power plant, about 25 miles southwest of Lincoln, Neb., was an important part of the Atomic Energy Commission’s Reactor Power Demonstration Program. But in the end, it operated for only 6,271 hours and generated about 192.5 million kilowatt-hours of electric power during its short, 15-month life.
Y. Ueda, N. Ohno, S. Kajita, H. Kurishita, H. Iwakiri, K. Tokunaga, N. Yoshida
Fusion Science and Technology | Volume 52 | Number 3 | October 2007 | Pages 513-520
Technical Paper | The Technology of Fusion Energy - High Heat Flux Components | doi.org/10.13182/FST07-A1540
Articles are hosted by Taylor and Francis Online.
This paper reports Japanese activities on tungsten material development and the basic studies on plasma and tungsten interactions. Effects of helium ion irradiation on embrittlement and bubble formation of various tungsten materials have been intensively investigated in Japan. Details of the helium bubble formation mechanism, its effects on surface morphology ,and the impacts on dust formation are presented. Fine-grained and TiC fine-particles dispersed tungsten are being developed to increase the resistance of the material to degradation in the fusion reactor environment. Microstructures and specific features amenable to fusion environments are presented. The experimental results on repetitive heat pulses on surface roughening and cracking are shown. The repetitive heat pulse effects are very serious and further studies are needed. Important issues of tungsten material development for DEMO and commercial devices will be discussed.