During this phase, all the available pipeline information is evaluated and assessed. This includes information from original design, construction, maintenance and operations. All the inspections and surveys carried out on the pipeline previously are also reviewed, along with corrosion and leak history.
The purpose of this first step is to determine whether ECDA would be suitable as an inspection methodology for a particular pipeline. Should the ECDA Methodology be suitable, then the Pre-Assessment Phase also determines the various ECDA regions on the pipeline and assigns which inspection tools will be used for each ECDA Region.