analyzed in relation with the local environments wich are supposed to exist in the main parts of the installation. Then, Uniform and Localized corrosion performance of welded and non welded super-austenitic and super-duplex stainless steels are investigated and compared to nickel base alloys in laboratory conditions simulating actual flue gas
desulfurization environments. The main corrosion determining parameters investigated are pH, chloride and fluoride concentration as well as temperature. Results gained from these tests were combined to field experience to design materials selection charts taking into account corrosion risks in various zones of scrubbers. Finally, field experience and references are presented.