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Na冷却高速炉における大口径配管の流力振動評価に関する研究,45; 1次主冷却系ホットレグ配管のランダム振動の健全性評価

Study on flow-induced-vibration evaluation of large-diameter pipings in a sodium cooled fast reactor, 45; Structural integrity evaluation of the primary hot leg pipe due to flow-induced vibration

Xu, Y.*; 佐郷 ひろみ*; 廣田 和生*; 馬場 丈雄*; 山野 秀将

Xu, Y.*; Sago, Hiromi*; Hirota, Kazuo*; Baba, Takeo*; Yamano, Hidemasa

大口径配管の流力振動に関する研究開発成果を反映した「ナトリウム冷却高速炉1次系ホットレグ配管流力振動評価指針(案)」を用いて管内流れの乱れに起因したランダム振動による配管の構造健全性評価を行い、高速炉実証施設の1次系ホットレグ配管の健全性の見通しを得た。

Structural integrity evaluation has been carried out for a hot-leg pipe due to random vibration induced by turbulence of pipe flow using "proposed guideline of flow-induced vibration evaluation for the primary hot-leg piping in sodium-cooled fast reactor", which has reflected the R&D results of the flow-induced vibration for a large-diameter piping. This gave the prospect of integrity of the primary hot-leg piping in the demonstration fast reactor.

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