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August 2025
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Industry Update—August 2025
Here is a recap of industry happenings from the recent past:
SMR service center targeted for Ontario
GE Vernova Hitachi Nuclear Energy has announced plans to invest as much as $50 million to establish a Canadian BWRX-300 Engineering and Service Center near Ontario Power Generation’s Darlington New Nuclear Project site. The Ontario government had previously approved the construction of the first of four BWRX-300 small modular reactors at the site. The center will provide engineering and technical services for the long-term operation and maintenance of the future fleet of SMRs in Ontario. It will also serve as a hub for innovation and training, knowledge sharing, supply chain engagement, and workforce development.
R. Kumazawa, T. Mutoh, K. Saito, T. Seki, H. Kasahara, M. Tokitani, S. Masuzaki, N. Ashikawa, Y. Nakamura, S. Kubo, T. Shimozuma, Y. Yoshimura, H. Igami, H. Takahashi, Y. Takeiri, K. Tsumori, M. Osakabe, K. Ikeda, K. Nagaoka, O. Kaneko, M. Goto, K. Sato, H. Chikaraishi, K. Ida, Y. Nagayama, Y. Zhao, J. G. Kwak, J. S. Yoon, LHD Experiment Group
Fusion Science and Technology | Volume 58 | Number 1 | July-August 2010 | Pages 524-529
Chapter 10. Ion Cyclotron Range of Frequency Heating | Special Issue on Large Helical Device (LHD) | doi.org/10.13182/FST10-A10839
Articles are hosted by Taylor and Francis Online.
As one of the main objectives of operation of the Large Helical Device (LHD), long-pulse plasma discharge experiments have been carried out using ion cyclotron range of frequency (ICRF) heating power (mainly using a minority heating method). Discharges with electron density ne < 1019 m-3 and Te0 > 1 keV have been sustained with an ICRF heating power around [approximately]1 MW and an electron cyclotron heating power of [approximately]0.1 MW. The total injected heating energy exceeded 1.6 GJ. Many technological improvements were made before undertaking long-pulse plasma discharges, e.g., the installation of a steady-state high-rf power generator and a liquid stub tuner capable of real-time impedance matching. Over the past decade, the achieved pulse length has increased to 1 h. One of the keys to this success was dispersion of the local plasma heat load onto divertors, which was accomplished by cyclically sweeping the magnetic axis inward and outward. Eventually, the plasma terminated due to the penetration of impurities, which originated from the release of thin flakes on the divertor plates. The pulse length was extended by installing new divertor plates with better thermal conduction. A mode conversion heating scenario has been considered as an alternative to the minority ICRF heating scenario; the former may have advantages due to the lack of an ion cyclotron resonance layer in front of the antennas in the mode conversion case.