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Conference Spotlight
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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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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.
F. Bellina, M. Guarnieri, A. Stella, G. Ferri, J. Rauch, T. Roman
Fusion Science and Technology | Volume 15 | Number 2 | March 1989 | Pages 938-944
Magnet Engineering, Design and Experiments — I | doi.org/10.13182/FST89-A39814
Articles are hosted by Taylor and Francis Online.
This paper presents the final design and main manufacturing aspects of the RFX Magnetizing Winding, now being manufactured by ABB. The winding is designed to store 15 Wb flux and consists of 200 copper turns wound into 40 coils. These are impregnated in groups to form 17 blocks, to satisfy mechanical requirements. The largest coils, with diameters exceeding 8 m, are demountable into two halves, for ease of transport and assembly. The peak turn current is 50 kA and the peak voltage per turn is 700 V. A special connection between the coils allows the resulting voltage across the terminals of each sector to be kept below 35 kV and the voltage to earth below 17.5 kV. To limit diffusion phenomena inside the solid conductors, the innermost 24 coils are wound with two conductors connected in parallel at the coil terminals, transposed with each other at the half coil. Polymide and glass tapes impregnated with epoxy resin provide good insulation without excessive thickness.