Controlling microbiologically influenced corrosion in pipelines microbial action has been identified as a contributor to rapid corrosion of metals and alloys exposed to soils seawater distilled water and freshwater crude oil hydrocarbon fuels and process chemicals and sewage many industries and infrastructure are affected by . Metals article microbiologically influenced corrosion of a pipeline in a petrochemical plant mahdi kiani khouzani 1 abbas bahrami 1 afrouzossadat hosseini abari 2 meysam khandouzi 1 and peyman taheri 3 1 department of materials engineering isfahan university of technology isfahan 84156 83111 iran mahdikiani1996gmailcom mkk anbahramicciutacir ab shokraneh 84yahoo . Microbiologically influenced corrosion mic represents a serious threat to the extended preservation of wet parked pipelines where degradation of treatment chemicals and the increase in microbial. Thus more information is necessary to reveal the mechanism of microbiologically influenced corrosion mic in groundwater pipelines to gain comprehensive knowledge in addition corrosion remains a problem in pipelines as well as in industries employing corrosive materials