Table of Contents
International Journal of Nuclear Energy
Volume 2014 (2014), Article ID 423295, 23 pages
http://dx.doi.org/10.1155/2014/423295
Review Article

Predicting and Preventing Flow Accelerated Corrosion in Nuclear Power Plant

School of Chemical Engineering and Advanced Materials, University of Newcastle, Benson Building, Newcastle upon Tyne NE1 7RU, UK

Received 28 May 2014; Accepted 28 July 2014; Published 13 October 2014

Academic Editor: Thomas Schulenberg

Copyright © 2014 Bryan Poulson. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Flow accelerated corrosion (FAC) of carbon steels in water has been a concern in nuclear power production for over 40 years. Many theoretical models or empirical approaches have been developed to predict the possible occurrence, position, and rate of FAC. There are a number of parameters, which need to be incorporated into any model. Firstly there is a measure defining the hydrodynamic severity of the flow; this is usually the mass transfer rate. The development of roughness due to FAC and its effect on mass transfer need to be considered. Then most critically there is the derived or assumed functional relationship between the chosen hydrodynamic parameter and the rate of FAC. Environmental parameters that are required, at the relevant temperature and pH, are the solubility of magnetite and the diffusion coefficient of the relevant iron species. The chromium content of the steel is the most important material factor.