About conditions of applicability of point current leakage model for the interpretation of anomalous fields which were caused by linear damage of pipelines

The simplest type of insulation damage of buried pipelines is point damage. For its electric field there are relatively simple express-interpretation algorithms that allow determining both its depth h and the current leakage strength I. In practice, frequently occur other types of damage - linear and superficial nature, for anomalous fields of which the interpretation algorithms more complicated. At the same time, depending on the ratio of the sources depth and their sizes, there are possibility to apply simple express methods for the interpretation of their fields, which are peculiar to the point sources fields. In this paper were executed analysis of conditions for applying the point source field model to interpret the anomalous field caused by current leakage from linear damage.