ABSTRACT
In addition to setting design protection potentials in aerated seawater, many of these codes also recommend design protection potentials for anaerobic environments. Typically, the codes also explain that these are anaerobic environments where microbiologically influenced corrosion is considered to be a threat. Dexter et al. presented their corrosion data as the percentage weight loss of their specimens, they also gave the plate thickness. Based on the test duration (120 days), and assuming corrosion from both faces, it is possible to manually translate their weight losses into corrosion rates. The applicability of a theory of Cathodic Protection (CP) based on electrode kinetics, the majority of the laboratory testing, and the impressive track record, all support the adoption of –800 mV as the appropriate criterion for the CP of steel in aerated seawater.
