C206 気液二相流条件の流れ加速型腐食に対する既存評価手法の予測傾向(OS6 流れ加速型腐食)

概要

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Flow accelerated corrosion (FAC) is one of the serious wall thinning problems when power plants are operating. There are some evaluation methods of wall thinning rate caused by FAC in water single-phase flow, and these methods are used for management of running power plant in foreign countries. However, FAC in water-steam two-phase flow has not been studied so much, so that the numbers of evaluation methods of wall thinning rate in two-phase flow are smaller than those in water single-phase flow. In this report, one of these methods is investigated to reveal the prediction trend of wall thinning rate by FAC in two-phase flow. In general, wall thinning rate in two phase flow is larger than that in the single flow. Hence, additional care for two-phase flow piping management is needed to operate power plant safely.
一般社団法人日本機械学会の論文
2011-06-22