New Defects Between Inspections and Their Spatial Features

This chapter presents the results of new corrosion points based on the framework proposed in Chap. 7 . This framework uses two consecutive inspections in a matching process to classify the corrosion records as new or old. The spatial distribution of these new corrosion points is evaluated under a null hypothesis of Complete Spatially Randomness (CSR) against the alternatives of clustered or dispersed distributions. Finally, the location of these new corrosion points is simulated using a non-homogeneous Poisson process. The possible interaction with old corrosion points is evaluated following a repulsion or attraction permutation test. This chapter aims to present the main results of this framework based on the measurements from both pipe walls and inspections.