This report summarizes the evaluation method, the development schedule and the result of the test. A conceptual design study of the Japanese sodium-cooled fast reactor (JSFR) is in progress of “Feasibility Study on Commercialized Fast Reactor Cycle Systems.” In this study we have proposed a component which integrated IHX (Intermediate heat exchanger) with primary pump into one vessel (integrated IHX/Pump) as one of advanced concepts for the plant economy. By development this component, the amount of material (steel) of the primary cooling system can be reduced and the maintenance performance of IHX can be improved. In order to confirm its feasibility, it is important to avoid the resonant vibration caused by integrating of the pump into the static IHX and to prevent excessive wear-out of the heat exchange tubes caused by contact with the tube support plates. Therefore, the vibration evaluation method has been developed and a lot of examinations were carried out to confirm the feasibility of this concept. The pump is arranged at the center of the IHX and heat exchange tubes are arranged concentrically. This component consists of the multiple cylindrical layers. Tube support plates are installed and they support the tube bundle with 0.1–0.3mm gaps. The 1/4-scale model was selected for vibration tests. The first step test with an internal vibration exciter which simulated the pump was performed, and the test with the pump installed into IHX was done. This test model has been installed at Takasago R&D center of Mitsubishi Heavy Industries, Ltd. The vibration caused by the pump was measured. As a result of data analysis, the character of frequency response was acquired. The analysis code called as “FINAS” can directly handle the vibration behavior of complex multi-cylinders with fluid between the cylinders. The eigenvalue analysis and response analysis were performed using a detailed model and the results were compared with the test results. Vibration evaluation methods of the integrated IHX/Pump have been studied. The 1/4-scale vibration test was performed and the results were compared with the analysis.
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14th International Conference on Nuclear Engineering
July 17–20, 2006
Miami, Florida, USA
Conference Sponsors:
- Nuclear Engineering Division
ISBN:
0-7918-4244-4
PROCEEDINGS PAPER
Development of the Integrated IHX/Pump Component 1/4-Scale Vibration Testing
Hiroki Hayafune,
Hiroki Hayafune
Japan Atomic Energy Agency
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Mamoru Konomura,
Mamoru Konomura
Japan Atomic Energy Agency
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Hideyuki Morita,
Hideyuki Morita
Mitsubishi Heavy Industries, Ltd.
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Yukinori Usui,
Yukinori Usui
Mitsubishi Heavy Industries, Ltd.
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Yoshihiro Tsujita
Yoshihiro Tsujita
Mitsubishi Heavy Industries, Ltd.
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Hiroki Hayafune
Japan Atomic Energy Agency
Mamoru Konomura
Japan Atomic Energy Agency
Hideyuki Morita
Mitsubishi Heavy Industries, Ltd.
Yukinori Usui
Mitsubishi Heavy Industries, Ltd.
Naoki Sawa
Mitsubishi Heavy Industries, Ltd.
Yoshihiro Tsujita
Mitsubishi Heavy Industries, Ltd.
Paper No:
ICONE14-89745, pp. 271-278; 8 pages
Published Online:
September 17, 2008
Citation
Hayafune, H, Konomura, M, Morita, H, Usui, Y, Sawa, N, & Tsujita, Y. "Development of the Integrated IHX/Pump Component 1/4-Scale Vibration Testing." Proceedings of the 14th International Conference on Nuclear Engineering. Volume 3: Structural Integrity; Nuclear Engineering Advances; Next Generation Systems; Near Term Deployment and Promotion of Nuclear Energy. Miami, Florida, USA. July 17–20, 2006. pp. 271-278. ASME. https://doi.org/10.1115/ICONE14-89745
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