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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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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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Nuclear Technology
Fusion Science and Technology
August 2025
Latest News
Schulz Electric™ Refurbishes Critical Circulating Water Pump Motor in Only Four Days
Schulz Electric™ was contacted by a nuclear power plant in the New England region that serves a community of over 2 million homes. After five years of service, a 1500 HP, 4 kV, 24-pole circulating water pump motor (measuring approximately 7’ wide, 8’ tall, and weighing several tons) needed refurbishing while the plant was still online. To add to their concern, the power plant is located close to the ocean. The aging motor was not only approaching the end of its serviceable life, but was highly susceptible to moisture intrusion and the salt-laden air, which can build up in air passages within the motor. These environmental conditions can lead to elevated operating temperatures and corrosion developing on the rotor, stator, and shaft components. These factors combined, placed the plant at an increased risk of downtime that could have potentially led to a significant loss of revenue if they were forced into a shutdown event.
Kiyohiko Nishimura, Keisuke Matsuoka, Masami Fujiwara, Kozo Yamazaki, Jiro Todoroki, Tetsuo Kamimura, Tsuneo Amano, Heiji Sanuki, Shoichi Okamura, Minoru Hosokawa, Hiroshi Yamada, Shugo Tanahashi, Shin Kubo, Yasuyuki Takita, Tatsuo Shoji, Osamu Kaneko, Harukazu Iguchi, Chihiro Takahashi
Fusion Science and Technology | Volume 17 | Number 1 | January 1990 | Pages 86-100
Technical Paper | Stellarator System | doi.org/10.13182/FST90-A29173
Articles are hosted by Taylor and Francis Online.
The Compact Helical System was designed for research on transport in a low-aspect-ratio helical system. The machine parameters were chosen on the basis of a physics optimization study. Considerable effort was devoted to reducing error fields from current feeds and crossovers. The final machine parameters are as follows: major radius of 1 m; minor radius of the helical field coil of 0.313 m; plasma aspect ratio Ap = 5; pole number and toroidal period number of the helical field coil of l = 2 and m = 8, respectively; and helical pitch modulation of α = 0.3.
