藤原 和俊
著者に関連した記事は4件です。
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論文
Cr含有率0.99mass%の低合金鋼を用いた気液二相流下での流れ加速型腐食試験
著者:
佐竹 正哲,Masaaki ?SATAKE,森田 良,Ryo ?MORITA,藤原 和俊,Kazutoshi ?FUJIWARA?
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Chromium Content Flow-Accelerated Corrosion Mass Transfer Coefficient Water Chemistry Water-Steam Two-Phase Flow
佐竹 正哲,Masaaki ?SATAKE,森田 良,Ryo ?MORITA,藤原 和俊,Kazutoshi ?FUJIWARA?
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Chromium Content Flow-Accelerated Corrosion Mass Transfer Coefficient Water Chemistry Water-Steam Two-Phase Flow
Cr含有率については，その増加と共にFACが抑制されるという定性的な影響は知られており，単相流FACについてはその定量的な影響についても研究が進められている一方で，二相流FACに関しては定量的な影響は明らかでは無く，今後，二相流FACの減肉速度の予測評価を行う上では，Cr含有率と減肉速度の定量的な関係を明らかにする必要がある．二相流FACの減肉速度に与えるCr含有率の定量的な影響を明らかとすることを目的として，本速報ではFAC管理範囲から除外される高Cr含有率条件（1%程度以上）での気液二相流FAC試験を実施し，減肉速度の傾向について述べることとする．...
英字タイトル:
Flow-Accelerated Corrosion Test about the Low Alloy Steel with Chromium Content of 0.99 mass% under Water-Steam Two-Phase Flow?
英字タイトル:
Flow-Accelerated Corrosion Test about the Low Alloy Steel with Chromium Content of 0.99 mass% under Water-Steam Two-Phase Flow?
第17回
低温FACによる減肉速度に及ぼす鋼材Cr含有量と溶存酸素濃度の 組合せ影響評価
著者:
岸 拓海,阿部 博志,渡邉 豊,（東北大）,藤原 和俊,（電中研）
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Carbon Steel Cr Content Dissolved Oxygen Flow Accelerated Corrosion
岸 拓海,阿部 博志,渡邉 豊,（東北大）,藤原 和俊,（電中研）
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Carbon Steel Cr Content Dissolved Oxygen Flow Accelerated Corrosion
Flow Acceleration Corrosion (FAC) is one of the mechanisms of pipe wall thinning in power plants. The wall thinning caused by FAC is usually found between 90 ℃ and 230 ℃ with a peak at about 150 ℃. However, FAC has been reported at temperatures below this range.
This study evaluated the effect of DO and Cr content on wall thinning rate at 50 ℃. Raman spectroscopy was performed to identify the constituent species of the oxide film. FAC rate was seen to decrease by increasing Cr content. In terms of DO, wall ...
英字タイトル:
Combined Effect of Cr content and Dissolved Oxygen Concentration on Wall Thinning Rate by Low Temperature FAC
英字タイトル:
Combined Effect of Cr content and Dissolved Oxygen Concentration on Wall Thinning Rate by Low Temperature FAC
第10回
流れ加速型腐食による配管減肉の予測法に関する研究
著者:
藤澤 延行,Nobuyuki FUJISAWA,山縣 貴幸,Takayuki YAMAGATA,五十嵐 裕也,Yuya IKARASHI,藤原 和俊,Kazutoshi FUJIWARA,稲田 文夫,Fumio INADA
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Flow accelerated corrosion Pipe-wall thinning Prediction
藤澤 延行,Nobuyuki FUJISAWA,山縣 貴幸,Takayuki YAMAGATA,五十嵐 裕也,Yuya IKARASHI,藤原 和俊,Kazutoshi FUJIWARA,稲田 文夫,Fumio INADA
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Flow accelerated corrosion Pipe-wall thinning Prediction
In this paper, a comparative study of the pipe-wall thinning prediction with existing experimental data is carried out for some typical cases of flow accelerated corrosion of carbon steel. The numerical model tested in this study is the pipe-wall thinning model based on the standard k-εmodel of turbulence with the modification of high-Schmidt-number effect. The comparative study is carried out for the straight pipe flow, the pipe flow behind an orifice and the pipe flow behind a long elbow combined wit...
英字タイトル:
Investigation on Pipe-wall Thinning Prediction by Flow Accelerated Corrosion
英字タイトル:
Investigation on Pipe-wall Thinning Prediction by Flow Accelerated Corrosion
第11回
流れ加速型腐食下で形成される酸化皮膜の特徴と減肉速度 との関係
著者:
矢野 拓磨,Takuma YANO,阿部 博志,Hirose ABE,渡邉 豊,Yutaka WATANABE,宮崎 孝道,Takamichi MIYAZAKI,藤原 和俊,Kazoshi FUJIWARA,稲田 文夫,Fumio INADA
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Characteristics oxide film FAC Fresnel contrast Pipe wall thinning TEM Thickness of compact oxides Thinning rate
矢野 拓磨,Takuma YANO,阿部 博志,Hirose ABE,渡邉 豊,Yutaka WATANABE,宮崎 孝道,Takamichi MIYAZAKI,藤原 和俊,Kazoshi FUJIWARA,稲田 文夫,Fumio INADA
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Characteristics oxide film FAC Fresnel contrast Pipe wall thinning TEM Thickness of compact oxides Thinning rate
Pipe wall thinning is one of the important degradation phenomena taking place in the nuclear power plant. Major mechanism of the mainly pipe wall thinning is Flow Accelerated Corrosion (FAC), where chemical process plays the primary role. But mechanism of FAC is not yet full y understood. Especially characteristics of oxide film formed in FAC is not well known although oxide film property would be strongly related to thinning rate in FAC. The main objective of this work is finding characteristics of oxide ...
英字タイトル:
Relation of Thinning Rate and Characterization of The Oxide Film Formed in Flow Accelerated Corrosion of Carbon Steels
英字タイトル:
Relation of Thinning Rate and Characterization of The Oxide Film Formed in Flow Accelerated Corrosion of Carbon Steels