Evaluation Methods for Corrosion Damage of Components in Cooling Systems of Nuclear Power Plants by Coupling Analysis of Corrosion and Flow Dynamics (II): Evaluation of Corrosive Conditions in PWR Secondary Cooling System
作者： Naoki HIRANUMA , Wataru SUGINO , Seiichi KOSHIZUKA , Shunsuke UCHIDA , Masanori NAITOH
DOI: 10.1080/18811248.2008.9711915
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摘要: Flow accelerated corrosion (FAC) is divided into two processes: a (chemical)process and flow dynamics (physical) process. The former the essential process to cause FAC latter accelerating enhance occurrence. chemical in surface boundary layer can be analyzed evaluate rate. In this paper, corrosive conditions along path of PWR secondary cooling system were evaluated. To do this, velocity temperature each elemental volume obtained with 1D computational (CFD) codes, distribution oxygen concentration was calculated hydrazine reaction code, then electrochemical potential (ECP) evaluated by using Evans diagram. proposed calculation procedures for conditions, reactions bulk oxidation on considered ob...
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