New Soil Corrosiveness And External Corrosion Rate Model

摘要

This article examines how soil cor-rosiveness and pipeline corrosion rate data support integrity man-agement programs. Pipeline integrity management programs address a wide range of threats to safe operation. Among these threats is external corrosion of buried steel pipelines. While external coatings and cathodic protection (CP) are typically used to mitigate external corrosion, corrosion can result from the combined presence of degraded coatings and inadequate CP.rnExternal corrosion can be detected through a variety of assessment methods, including inline inspection (ILI) and external corrosion direct assessment (ECDA). The detection of corrosion provides pipeline operators with information regarding the areas vulnerable to eventual failure. However, it is the rate of corrosion that will influence how quickly those flaws can grow to critical size and cause failure.