S0802-4-1 配管要素における流れ加速型腐食による減肉傾向の相対的な評価(原子力システムおよび要素技術(4))

概要

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Flow Accelerated Corrosion (FAC) requires considerable attention in plant piping management, for its potential of catastrophic pipe rupture of main piping systems. For future revision of the management, reduction of wall thickness measurement is required by subjected location screening with rational decision. In this study, geometry factors of piping elements were evaluated for the contribution in the screening process. In the evaluation, mass transfer coefficients for each element were calculated with CFD simulation. By introducing a new concept of "Threshold Mass Transfer Coefficient", geometry factor correlations were proposed for elbow, orifice, T-union and separation, in functions of specific geometric parameters.
一般社団法人日本機械学会の論文
2010-09-04