This paper seeks to present the uncertain events that occur during the assessment and management of corrosion data survey by using Bayes' Model. In decision making, uncertainty about the outcomes of various situations is an important element of the analysis of the alternative strategies from which the choice must be made.
In Nigeria, the majority of the oil/gas/liquids pipelines are 30 to 50 years old. Most of the pipes were laid on the surface. But these pipelines have become old, corroded and less effective. They fail due to corrosion induced leaks ( resulting from lack of pipeline integrity survey and inadequate corrosion monitoring program design ) as well as vandalism.