It is possible to simplify the reactor internal pump power supply system in the ABWR without affecting the core flow supply when a trip of all RIPs event occurs by eliminating the motor-generator sets and increasing the rotating inertia of the RIPs. This inertia increase due to an additional flywheel, which leads to a gain in weight and length, requires a larger diameter nozzle with a thicker sleeve. However, a thicker sleeve nozzle and a longer and heavier motor casing may change the RIP performance. In the present study, the inertia-increased RIP was verified through full-scale tests. The rotating inertia time constant for coastdown characteristics (behavior of the RIP speed in the event of power loss) for the inertia-increased RIP was doubled compared with the current RIP. The inertia-increased RIP with the thicker sleeve nozzle maintained good performance and its power supply system without motor-generator sets was judged appropriate for the ABWR.
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10th International Conference on Nuclear Engineering
April 14–18, 2002
Arlington, Virginia, USA
Conference Sponsors:
- Nuclear Engineering Division
ISBN:
0-7918-3596-0
PROCEEDINGS PAPER
Development of an Inertia-Increased ABWR Internal Pump
Shirou Takahashi,
Shirou Takahashi
Hitachi, Ltd., Hitachi, Ibaraki, Japan
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Kousei Umemori,
Kousei Umemori
Hitachi, Ltd., Hitachi, Ibaraki, Japan
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Kooji Shiina,
Kooji Shiina
Hitachi, Ltd., Hitachi, Ibaraki, Japan
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Tetsuya Totani,
Tetsuya Totani
Hitachi Industries, Hitachi, Ibaraki, Japan
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Akihiro Sakashita,
Akihiro Sakashita
Tokyo Electric Power Company, Tokyo, Japan
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Norimichi Yamashita,
Norimichi Yamashita
Tokyo Electric Power Company, Tokyo, Japan
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Takahisa Kondo
Takahisa Kondo
Toshiba Corporation, Yokohama, Japan
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Shirou Takahashi
Hitachi, Ltd., Hitachi, Ibaraki, Japan
Kousei Umemori
Hitachi, Ltd., Hitachi, Ibaraki, Japan
Kooji Shiina
Hitachi, Ltd., Hitachi, Ibaraki, Japan
Tetsuya Totani
Hitachi Industries, Hitachi, Ibaraki, Japan
Akihiro Sakashita
Tokyo Electric Power Company, Tokyo, Japan
Norimichi Yamashita
Tokyo Electric Power Company, Tokyo, Japan
Takahisa Kondo
Toshiba Corporation, Yokohama, Japan
Paper No:
ICONE10-22344, pp. 725-732; 8 pages
Published Online:
March 4, 2009
Citation
Takahashi, S, Umemori, K, Shiina, K, Totani, T, Sakashita, A, Yamashita, N, & Kondo, T. "Development of an Inertia-Increased ABWR Internal Pump." Proceedings of the 10th International Conference on Nuclear Engineering. 10th International Conference on Nuclear Engineering, Volume 2. Arlington, Virginia, USA. April 14–18, 2002. pp. 725-732. ASME. https://doi.org/10.1115/ICONE10-22344
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