Abstract
The service environment of equipment such as combination of processes and materials and works are very complicated in chemical plants. The best material selection or solution of corrosion cause in the service environment is required large number of corrosion tests. for this reason the corrosion studies are required a lot of time and cost. Therefore, as for reduction of time, the electrochemical noise analysis（ENA）was introduced instead of standard mass loss method and as for cost reduction, numbers of measurement points were concentrated using a corrosion simulation program（CSP）. As the results of the studies, the corrosion study period is reduced less than 10％ of the conventional period and corrosion test cost is greatly reduced.
