Corrosion prevention and industrial economic analysis aspects for water heater

Abstract

Increased competition in market has forced small and medium scale industries to re-examine their methods of doing business. Corrosion cannot be eliminated completely and considered as major problem in industries. In Last decades industries have implemented corrosion prevention technique in order to sustain the competitive market. pH level of water used by customers based on geographic location and heating cycle affects most on metal parts of water heater. It results in pitting corrosion and reduction of life cycle with increased maintenance cost. Corrosion issues needs to be properly understood with prescribe necessary kind of treatment to ensure a long life span of the water heater. Many factor affects the material such as temperature, presence of moisture, reduced performance due to environmental effect and life of the water heater. Life cycle is improved when both inhibitor and protective coating method such as galvanizing, thermal spraying sacrificial method, impressed current, Zinc paint are used together or when protective coating is used together with cathodic protection. In present work authors have made an attempt to study Industrial economic aspects of corrosion issues in water heater and its prevention techniques analysis. Effect of galvanizing in various environments such as normal water, heated water and salty water is tested on metal parts and it has shown significant reduction in corrosion. Study of various corrosion prevention technique is focused on reduction in corrosion rate there by reducing the rework.