L51801 Impact of Short-Term Depolarization of Pipelines

The objectives of this project were to identify the negative impacts of extended depolarization of a pipeline with respect to measuring a 100 mV depolarization criteria and secondly to establish procedures for estimating the appropriate time over which depolarization is measured. The effort included laboratory testing for examining macro-cell couples and coating performance and field testing to examine depolarization phenomena associated with operating pipelines.